In this video, we will see the recap of .NET MAUI articles post on 2023. Supercharge your .NET MAUI projects by referring this articles. ...

.NET MAUI - 2023 Recap .NET MAUI - 2023 Recap

A blog about android developement

In this video, we will see the recap of .NET MAUI articles post on 2023. Supercharge your .NET MAUI projects by referring this articles.

DEV EXPRESS CHARTS IN .NET MAUI

December 04, 2023

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Lottie animations in .NET MAUI

November 19, 2023

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Transforming Labels into Hyperlinks with .NET MAUI

November 12, 2023

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Mastering MVVM: A Deep Dive into .NET MAUI with MVVM Toolkit

October 28, 2023

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Dev Express - Data Grid Control for .NET MAUI (Lifetime - Free plugin)

October 15, 2023

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Data Grid Control for .NET MAUI (Free plugin to Sort, Filter & Show Data)

October 04, 2023

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.NET MAUI - Swipe View

September 17, 2023

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Flyout Page in .NET MAUI

July 21, 2023

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.NET MAUI Barcode Scanner using IRONBARCODE

July 02, 2023

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Dynamic Status Bar in .NET MAUI

June 18, 2023

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Localisation in .NET MAUI

June 12, 2023

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File Picker in .NET MAUI

May 29, 2023

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Toast in .NET MAUI

May 21, 2023

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Avatar View in .NET MAUI Community Toolkit

May 07, 2023

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Signature Pad using .NET MAUI Community Toolkit

April 16, 2023

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.Net MAUI - QR Code Generator

January 05, 2023

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.Net MAUI - Zxing Barcode Scanner

January 10, 2023

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Introduction Supercharge your .NET MAUI projects with Devexpress Charts! This blog will explain you how to implement the chart in...

DEV EXPRESS CHARTS IN .NET MAUI DEV EXPRESS CHARTS IN .NET MAUI

A blog about android developement

Introduction

Supercharge your .NET MAUI projects with Devexpress Charts! This blog will explain you how to implement the chart in .NET MAUI projects using Dev express, a life time free plugin. This plugin has many customisations and will directly skip into the implementation part.


Quick Links:


Project Setup:

  • Launch Visual Studio 2022, and in the start window click Create a new project to create a new project.
  • In the Create a new project window, select MAUI in the All project types drop-down, select the .NET MAUI App template, and click the Next button:
  • In the configure your new project window, name your project, choose a suitable location for it, and click the Next button:
  • In the Additional information window, click the Create button:
  • Once the project is created, we can able to see the Android, iOS, Windows and other running options in the toolbar. Press the emulator or run button to build and run the app

Install Plugin:

  • Library Requirement: The Dev express's nuget link should be mapped as a package source and we need to install "DevExpress.Maui.Charts" into our project.
  • Installation via NuGet: Obtain the Charts library by searching for "DevExpress.Maui.Charts" in the NuGet Package Manager.
  • User Interface Guidance: Open the NuGet Package Manager interface to facilitate the installation process.
  • Visual Confirmation: The library, once searched, should appear as "DevExpress.Maui.Charts" in the NuGet interface.

Implementation

  • First, we need to open "MauiProgram.cs" and include the following namespace and line to allow the app to use the Chart Library.
    using DevExpress.Maui;
    .UseDevExpress()
  • Open MainPage.xaml file and add the following namespace. (the page will be replaced according to you).
    xmlns:dxc="clr-namespace:DevExpress.Maui.Charts;assembly=DevExpress.Maui.Charts"
  • Then, remove the default content and add an instance of the ChartView class to the page.
    <ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
                 xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
                 xmlns:dxc="clr-namespace:DevExpress.Maui.Charts;assembly=DevExpress.Maui.Charts"
                 x:Class="ScatterChartGetStarted.MainPage">
        <dxc:ChartView/>
    </ContentPage>
  • Consider removing the event handlers from the code-behind for the default content. It is advisable to eliminate default styles (such as fonts, colors, and other settings) in the App.xaml file as well.
  • In this instance, the chart features line series displaying the annual GDP for three countries. Generate a ViewModel.cs file that includes the following classes:
    public class ViewModel {
        public CountryGdp GdpValueForUSA { get; }
        public CountryGdp GdpValueForChina { get; }
        public CountryGdp GdpValueForJapan { get; }
    
        public ViewModel() {
            GdpValueForUSA = new CountryGdp(
                "USA",
                new GdpValue(new DateTime(2020, 1, 1), 20.93),
                new GdpValue(new DateTime(2019, 1, 1), 21.43),
                new GdpValue(new DateTime(2018, 1, 1), 20.58),
                new GdpValue(new DateTime(2017, 1, 1), 19.391),
                new GdpValue(new DateTime(2016, 1, 1), 18.624),
                new GdpValue(new DateTime(2015, 1, 1), 18.121),
                new GdpValue(new DateTime(2014, 1, 1), 17.428),
                new GdpValue(new DateTime(2013, 1, 1), 16.692),
                new GdpValue(new DateTime(2012, 1, 1), 16.155),
                new GdpValue(new DateTime(2011, 1, 1), 15.518),
                new GdpValue(new DateTime(2010, 1, 1), 14.964)
            );
            GdpValueForChina = new CountryGdp(
                "China",
                new GdpValue(new DateTime(2020, 1, 1), 14.72),
                new GdpValue(new DateTime(2019, 1, 1), 14.34),
                new GdpValue(new DateTime(2018, 1, 1), 13.89),
                new GdpValue(new DateTime(2017, 1, 1), 12.238),
                new GdpValue(new DateTime(2016, 1, 1), 11.191),
                new GdpValue(new DateTime(2015, 1, 1), 11.065),
                new GdpValue(new DateTime(2014, 1, 1), 10.482),
                new GdpValue(new DateTime(2013, 1, 1), 9.607),
                new GdpValue(new DateTime(2012, 1, 1), 8.561),
                new GdpValue(new DateTime(2011, 1, 1), 7.573),
                new GdpValue(new DateTime(2010, 1, 1), 6.101)
            );
            GdpValueForJapan = new CountryGdp(
                "Japan",
                new GdpValue(new DateTime(2020, 1, 1), 4.888),
                new GdpValue(new DateTime(2019, 1, 1), 5.082),
                new GdpValue(new DateTime(2018, 1, 1), 4.955),
                new GdpValue(new DateTime(2017, 1, 1), 4.872),
                new GdpValue(new DateTime(2016, 1, 1), 4.949),
                new GdpValue(new DateTime(2015, 1, 1), 4.395),
                new GdpValue(new DateTime(2014, 1, 1), 4.850),
                new GdpValue(new DateTime(2013, 1, 1), 5.156),
                new GdpValue(new DateTime(2012, 1, 1), 6.203),
                new GdpValue(new DateTime(2011, 1, 1), 6.156),
                new GdpValue(new DateTime(2010, 1, 1), 5.700)
            );
        }
    }
    
    public class CountryGdp {
        public string CountryName { get; }
        public IList<GdpValue> Values { get; }
    
        public CountryGdp(string country, params GdpValue[] values) {
            this.CountryName = country;
            this.Values = new List<GdpValue>(values);
        }
    }
    
    public class GdpValue {
        public DateTime Year { get; }
        public double Value { get; }
    
        public GdpValue(DateTime year, double value) {
            this.Year = year;
            this.Value = value;
        }
    }
  • In the MainPage.xaml file, incorporate three LineSeries objects into the ChartView.Series collection. To establish a connection between the series and data, assign each LineSeries object's Data property to a SeriesDataAdapter object. Utilize the adapter's properties to indicate the data source and fields containing arguments and values for each series.
  • Additionally, define a local XAML namespace referring to a CLR namespace encompassing the view model. Subsequently, employ the page's BindingContext property to link the view model with the view.
    <ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
                 xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"  
                 xmlns:dxc="clr-namespace:DevExpress.Maui.Charts;assembly=DevExpress.Maui.Charts"
                 xmlns:ios="clr-namespace:Microsoft.Maui.Controls.PlatformConfiguration.iOSSpecific;assembly=Microsoft.Maui.Controls"
                 ios:Page.UseSafeArea="True"
                 xmlns:local="clr-namespace:MauiDevExpress"
                 x:Class="MauiDevExpress.MainPage">
        <ContentPage.BindingContext>
            <local:ViewModel/>
        </ContentPage.BindingContext>
        <dxc:ChartView>
            <dxc:ChartView.Series>
                <dxc:LineSeries DisplayName="{Binding GdpValueForUSA.CountryName}">
                    <dxc:LineSeries.Data>
                        <dxc:SeriesDataAdapter DataSource="{Binding GdpValueForUSA.Values}"
                                               ArgumentDataMember="Year">
                            <dxc:ValueDataMember Type="Value" Member="Value"/>
                        </dxc:SeriesDataAdapter>
                    </dxc:LineSeries.Data>
                </dxc:LineSeries>
    
                <dxc:LineSeries DisplayName="{Binding GdpValueForChina.CountryName}">
                    <dxc:LineSeries.Data>
                        <dxc:SeriesDataAdapter DataSource="{Binding GdpValueForChina.Values}"
                                               ArgumentDataMember="Year">
                            <dxc:ValueDataMember Type="Value" Member="Value"/>
                        </dxc:SeriesDataAdapter>
                    </dxc:LineSeries.Data>
                </dxc:LineSeries>
    
                <dxc:LineSeries DisplayName="{Binding GdpValueForJapan.CountryName}">
                    <dxc:LineSeries.Data>
                        <dxc:SeriesDataAdapter DataSource="{Binding GdpValueForJapan.Values}"
                                               ArgumentDataMember="Year">
                            <dxc:ValueDataMember Type="Value" Member="Value"/>
                        </dxc:SeriesDataAdapter>
                    </dxc:LineSeries.Data>
                </dxc:LineSeries>
            </dxc:ChartView.Series>
        </dxc:ChartView>
    </ContentPage>
  • Configure the X-axis to display labels for years by assigning a DateTimeAxisX object with the specified settings to the ChartView.AxisX property.
    <dxc:ChartView> <dxc:ChartView.AxisX>
        <dxc:DateTimeAxisX MeasureUnit="Year" GridAlignment="Year"
        GridSpacing="2"/> </dxc:ChartView.AxisX> </dxc:ChartView>
  • Configure the title and labels on the Y-axis. Set the ChartView.AxisY property to a NumericAxisY object and specify this object’s Title and Label properties.
    <dxc:ChartView> 
    <!-- The X-axis config is here. -->
        <dxc:ChartView.AxisY>
            <dxc:NumericAxisY>
                <dxc:NumericAxisY.Title>
                    <dxc:AxisTitle Text="Trillions of US$">
                        <dxc:AxisTitle.Style>
                            <dxc:TitleStyle>
                                <dxc:TitleStyle.TextStyle>
                                    <dxc:TextStyle Size="16"/>
                                </dxc:TitleStyle.TextStyle>
                            </dxc:TitleStyle>
                        </dxc:AxisTitle.Style>
                    </dxc:AxisTitle>
                </dxc:NumericAxisY.Title>
                <dxc:NumericAxisY.Label>
                    <dxc:AxisLabel TextFormat="#.#" Position="Inside"/>
                </dxc:NumericAxisY.Label>
            </dxc:NumericAxisY>
        </dxc:ChartView.AxisY>
    </dxc:ChartView>
  • Configure the legend position and orientation. Set the ChartView.Legend property to a Legend object, and specify this object’s properties as follows:
    <dxc:ChartView>
        <dxc:ChartView.Legend>
            <dxc:Legend VerticalPosition="TopOutside" 
                        HorizontalPosition="Center" 
                        Orientation="LeftToRight"/>
        </dxc:ChartView.Legend>
    </dxc:ChartView>
  • Establish the chart to showcase a series point hint as a crosshair cursor by setting the ChartView.Hint property to a Hint object and assigning a CrosshairHintBehavior object to Hint.Behavior. Subsequently, define the hint's content, data format, and visibility options. Set the LineSeries.HintOptions property to a SeriesCrosshairOptions object with the specified settings.
    <ContentPage.Resources>
        <dxc:SeriesCrosshairOptions x:Key="lineSeriesHintOptions"
                                    PointTextPattern="{}{S}: {V}M"
                                    ShowInLabel="True"
                                    AxisLabelVisible="True"
                                    AxisLineVisible="True"/>
    </ContentPage.Resources>
    <dxc:ChartView>
        <dxc:ChartView.Hint>
            <dxc:Hint>
                <dxc:Hint.Behavior>
                    <dxc:CrosshairHintBehavior GroupHeaderTextPattern="{}{A$YYYY}" 
                                               MaxSeriesCount="3"/>
                </dxc:Hint.Behavior>
            </dxc:Hint>
        </dxc:ChartView.Hint>
    
        <dxc:ChartView.Series>
            <dxc:LineSeries HintOptions="{StaticResource lineSeriesHintOptions}">
                <!--Series Data-->
            </dxc:LineSeries>
            <dxc:LineSeries HintOptions="{StaticResource lineSeriesHintOptions}">
                <!--Series Data-->
            </dxc:LineSeries>
            <dxc:LineSeries HintOptions="{StaticResource lineSeriesHintOptions}">
                <!--Series Data-->
            </dxc:LineSeries>
        </dxc:ChartView.Series>    
    </dxc:ChartView>
  • Set the LineSeries.MarkersVisible property to True to display point markers. To change the line series appearance, set the LineSeries.Style property to a LineSeriesStyle object. This object’s Stroke, StrokeThickness, MarkerSize, and MarkerStyle properties allow you to configure the appearance of the series line and point markers.
    <dxc:LineSeries MarkersVisible="True">
        <!--Series Data-->
        <dxc:LineSeries.Style>
            <dxc:LineSeriesStyle Stroke="#7145a7" StrokeThickness="2" MarkerSize="8">
                <dxc:LineSeriesStyle.MarkerStyle>
                    <dxc:MarkerStyle Fill="#7145a7"/>
                </dxc:LineSeriesStyle.MarkerStyle>
            </dxc:LineSeriesStyle>
        </dxc:LineSeries.Style>
    </dxc:LineSeries>

Demo

Download Code:

You can download the code from GitHub. If you have any doubts, feel free to post a comment. If you liked this article, and it is useful to you, do like, share the article & star the repository on GitHub.

Introduction Supercharge your .NET MAUI projects with Lottie animations! Imagine it as the magic wand for your app's visuals....

Lottie animations in .NET MAUI Lottie animations in .NET MAUI

A blog about android developement

Introduction

Supercharge your .NET MAUI projects with Lottie animations! Imagine it as the magic wand for your app's visuals. Thanks to Adobe After Effects, Lottie speaks a special language called JSON, making animations a breeze. Meet SkiaSharp, a Microsoft buddy that helps Lottie shine in .NET MAUI, making your app look cool without the complexity. Learn the ropes in our beginner-friendly guide! Add a dash of Lottie, sprinkle in some JSON magic, and watch your app come to life!


Top advantages of Lottie Animations:

  • Vector-based Adaptability: Lottie animations, being vector-based, ensure seamless scalability without compromising resolution.
  • Reduced File Size: Compared to formats like GIF or MP4, Lottie files boast significantly smaller sizes while maintaining top-notch quality.

Quick Links:


Project Setup:

  • Launch Visual Studio 2022, and in the start window click Create a new project to create a new project.
  • In the Create a new project window, select MAUI in the All project types drop-down, select the .NET MAUI App template, and click the Next button:
  • In the configure your new project window, name your project, choose a suitable location for it, and click the Next button:
  • In the Additional information window, click the Create button:
  • Once the project is created, we can able to see the Android, iOS, Windows and other running options in the toolbar. Press the emulator or run button to build and run the app

Install Plugin:

  • Library Requirement: SkiaSharp library is essential for displaying Lottie animations.
  • Installation via NuGet: Obtain the SkiaSharp library by searching for "SkiaSharp.Extended.UI.Maui" in the NuGet Package Manager.
  • Enable Prerelease: Ensure the "Include prerelease" flag is enabled during installation, as MAUI support is currently in prerelease.
  • User Interface Guidance: Open the NuGet Package Manager interface to facilitate the installation process.
  • Visual Confirmation: The library, once searched, should appear as "SkiaSharp.Extended.UI.Maui" in the NuGet interface.

Implementation

  • First, we need to open "MauiProgram.cs" and include the following namespace and line to allow the app to use the Lottie Animations.
    using SkiaSharp.Views.Maui.Controls.Hosting;
    .UseSkiaSharp()
  • Open MainPage.xaml file and add the following namespace. (the page will be replaced according to you)
    xmlns:skia="clr-namespace:SkiaSharp.Extended.UI.Controls;assembly=SkiaSharp.Extended.UI"
  • Unlocking the magic of Lottie animations in your .NET MAUI app is a breeze! If you have JSON files, just add them to the Resources\Raw subfolder. For web-hosted animations, effortlessly consume them by passing the URI to the Lottie view. Explore the treasure trove of free and paid animations on Lottiefiles.com, a popular source for dynamic visuals. In our example, we'll use a JSON animation from the Lottie library repository, already included in the code for your convenience. Feel free to switch it up with your preferred animation!
  • We need to add the animation to the Raw folder: Go to Resources ➡ Raw ➡ Right click add ➡ Existing files ➡ animation.json (walking_batman.json in my sample).
  • <skia:SKLottieView RepeatCount="-1"
                               RepeatMode="Reverse"
                               Source="walking_batman.json" 
                               HeightRequest="400"
                               WidthRequest="400" />
  • <skia:SKLottieView>: This is the declaration of the SKLottieView, a specialized view for rendering Lottie animations using the SkiaSharp library.
  • RepeatCount="-1": The RepeatCount attribute determines how many times the animation should repeat. A value of -1 means it will repeat indefinitely.
  • RepeatMode="Reverse": The RepeatMode attribute sets the behavior of the animation when it repeats. In this case, "Reverse" means the animation will play in reverse each time it repeats.
  • Source="walking_batman.json": Specifies the source of the Lottie animation. In this example, the animation is loaded from a file named "Girl.json" located in the project.
  • HeightRequest="400" and WidthRequest="400": These attributes set the desired height and width of the SKLottieView, in this case, both set to 400. This property is very important to visualize Lottie animation.
  • This code essentially integrates a Lottie animation (from the "walking_batman.json" file) into your Xamarin.Forms application, configuring its repeat behavior and dimensions. Adjust these attributes based on your specific animation and layout requirements.


Demo

Download Code:

You can download the code from GitHub. If you have any doubts, feel free to post a comment. If you liked this article, and it is useful to you, do like, share the article & star the repository on GitHub.

Introduction Our phones and computers are like magic doors to the world, thanks to the apps we use every day. These apps show us ...

Transforming Labels into Hyperlinks with .NET MAUI Transforming Labels into Hyperlinks with .NET MAUI

A blog about android developement

Introduction

Our phones and computers are like magic doors to the world, thanks to the apps we use every day. These apps show us stuff using a mix of words, pictures, and special links that let us explore more. 🌐 Links, especially, make it easy for us to dive deep into things. In this guide, we'll learn how to add these special links to your .NET MAUI apps, making it more fun for people to check out what you have to share. Join us on this enlightening journey as we unravel the secrets of Transforming Labels into Hyperlinks with .NET MAUI.


Quick Links:


Project Setup:

  • Launch Visual Studio 2022, and in the start window click Create a new project to create a new project.
  • In the Create a new project window, select MAUI in the All project types drop-down, select the .NET MAUI App template, and click the Next button:
  • In the configure your new project window, name your project, choose a suitable location for it, and click the Next button:
  • In the Additional information window, click the Create button:
  • Once the project is created, we can able to see the Android, iOS, Windows and other running options in the toolbar. Press the emulator or run button to build and run the app

Implementation

  • In this step, we'll include two labels within the horizontal layout to position them closely to each other.
  • The first text will serve as regular text, representing the standard label.
  • The second text will function as a hyperlink, characterized by blue text color and underlined as text decoration.
  • The following code snippet will help in grasping the concept more clearly.
  • <HorizontalStackLayout>
    	<Label
    		Text="To know more about .NET MAUI "
    		SemanticProperties.HeadingLevel="Level1"
    		FontSize="Default"
    		HorizontalOptions="Center" />
    
    	<Label
    		Text="Visit Here"
    		TextDecorations="Underline"
    		TextColor="Blue"
    		SemanticProperties.HeadingLevel="Level1"
    		FontSize="Default"
    		HorizontalOptions="Center" >
    		<Label.GestureRecognizers>
    			<TapGestureRecognizer Tapped="OnUrlClicked"/>
    		</Label.GestureRecognizers>
    	</Label>
    </HorizontalStackLayout>
  • Incorporate the tap gesture event "OnUrlClicked" to open the specified URL link, as demonstrated below.
    private async void OnUrlClicked(object sender, TappedEventArgs e)
    {
    	await Launcher.OpenAsync("https://www.androidmads.info/search/label/.net%20maui");
    }

Full Code:

Demo

Download Code:

You can download the code from GitHub. If you have any doubts, feel free to post a comment. If you liked this article, and it is useful to you, do like, share the article & star the repository on GitHub.

Introduction Welcome to our newest blog post, where we explore the vibrant realm of MVVM (Model-View-ViewModel) architecture usin...

Mastering MVVM: A Deep Dive into .NET MAUI with MVVM Toolkit Mastering MVVM: A Deep Dive into .NET MAUI with MVVM Toolkit

A blog about android developement

Introduction

Welcome to our newest blog post, where we explore the vibrant realm of MVVM (Model-View-ViewModel) architecture using the cutting-edge MVVM Toolkit in .NET MAUI. In this comprehensive guide, we will unravel the intricacies of MVVM and demonstrate how the MVVM Toolkit in .NET MAUI empowers developers to create robust, responsive, and easily maintainable cross-platform mobile applications. Join us on this enlightening journey as we unravel the secrets of mastering MVVM in the context of .NET MAUI.


Quick Links:


Project Setup:

  • Launch Visual Studio 2022, and in the start window click Create a new project to create a new project.
  • In the Create a new project window, select MAUI in the All project types drop-down, select the .NET MAUI App template, and click the Next button:
  • In the configure your new project window, name your project, choose a suitable location for it, and click the Next button:
  • In the Additional information window, click the Create button:
  • Once the project is created, we can able to see the Android, iOS, Windows and other running options in the toolbar. Press the emulator or run button to build and run the app

Install Plugin:

In this steps, we will see the steps to install "MVVM Toolkit" in .NET MAUI project:
  • Access NuGet Package Manager: In Visual Studio, right-click on your .NET MAUI project in the Solution Explorer. From the context menu, select "Manage NuGet Packages."
  • Search for "CommunityToolkit.Mvvm": In the NuGet Package Manager, click on the "Browse" tab. In the search bar, type "CommunityToolkit.Mvvm" and hit Enter. The package should appear in the search results.
  • Select and Install the Package: Once you find "CommunityToolkit.Mvvm" in the search results, click on it to select it. Ensure you choose the appropriate version compatible with your .NET MAUI project. Click on the "Install" button to begin the installation process.
  • Accept License Agreement: During the installation, you may be prompted to accept the license agreement. Review the terms and conditions and click on the "Accept" button to proceed.
  • Wait for Installation to Complete: Visual Studio will download and install the package along with its dependencies. This process may take a few moments, depending on your internet connection speed.
  • Verify Installation: After the installation is complete, verify that there are no error messages in the Output window. This indicates a successful installation of the package.

Implementation

View Model

  • In this step, we create a ViewModel that inherits from the ObservableObject class. This inheritance is pivotal because ObservableObject implements the INotifyPropertyChanged interface. By doing so, we gain the ability to trigger the PropertyChanged event, a vital mechanism enabling the notification of property value changes to subscribers, primarily the UI. This synchronization is fundamental for effective data binding, ensuring seamless coordination between the user interface and the underlying ViewModel.

    For example:
    public partial class ItemEntryPageModel : ObservableObject
    {
        [ObservableProperty]
        private int _id;
        [ObservableProperty]
    	private string _name;
    	[ObservableProperty]
    	private string _description;
    
        [ICommand]
    	public async void Save()
    	{
            await Application.Current.MainPage.DisplayAlert("MAUI MVVM Sample", "Item Saved Successfully", "OK");
        }
    }
  • When we use the [ObservableProperty] attribute, properties can send automatic alerts when they change. This is important for connecting data and updating the user interface (UI) when properties change. When you apply the [ObservableProperty] attribute to a property, it does a lot of necessary coding work behind the scenes. It sets up the code needed to tell other parts of the program when a property changes. This attribute saves time because you don't have to write all this code manually. For Example: "_description" & "_name" produces "Description" & "Name" respectively.
  • The [ICommand] implementation is a way to connect methods or actions in the app with what the user sees on the screen. For instance, it can create a command called SaveCommand that's linked to the Save method. This linking is crucial for making sure that when a user does something, like clicking a button, the right action happens in the app.

View

  • Finally, we will design the View, where we create the user interface using XAML. Here, we connect the UI elements to the ViewModel properties using data binding expressions.
  • This connection enables the View to show and modify task data in real-time, ensuring a dynamic and responsive user experience.
  • <?xml version="1.0" encoding="utf-8" ?>
    <ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
                 xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
                 x:Class="MauiMVVM.Views.ItemEntryPage"
                 Title="Item Entry">
        <StackLayout Margin="20"
                     Spacing="10">
            <VerticalStackLayout>
                <Label Text="Name:"
                       FontSize="16"/>
                <Entry Text="{Binding Name}" 
                       Placeholder="Item Name"/>
            </VerticalStackLayout>
    
            <VerticalStackLayout>
                <Label Text="Description:"
                       FontSize="16"/>
                <Entry Text="{Binding Description}" 
                       Placeholder="Item Description"/>
            </VerticalStackLayout>
    
    
            <Button x:Name="btn_save" 
                    Text="Save"
                    Command="{Binding SaveCommand}"/>
        </StackLayout>
    </ContentPage>
  • In .NET MAUI, data binding makes sure that data stays in sync between the ViewModel and the View without manual intervention.
  • For instance, we can link a task's title in the ViewModel to a label in the View. When the title changes, it instantly updates in the UI.
  • This automatic synchronization simplifies UI updates and eliminates the need for handling events manually.

Wire-up View and View Model

  • The created view and view model should be added in MauiProgram.cs like below.
    var builder = MauiApp.CreateBuilder();
    		builder
    			.UseMauiApp<App>()
    			.ConfigureFonts(fonts =>
    			{
    				fonts.AddFont("OpenSans-Regular.ttf", "OpenSansRegular");
    				fonts.AddFont("OpenSans-Semibold.ttf", "OpenSansSemibold");
    			});
    
    #if DEBUG
    		builder.Logging.AddDebug();
    #endif
            builder.Services.AddTransient<ItemEntryPage>();
            builder.Services.AddTransient<ItemEntryPageModel>();
    
            return builder.Build();

Full Code:

Demo

Download Code:

You can download the code from GitHub. If you have any doubts, feel free to post a comment. If you liked this article, and it is useful to you, do like, share the article & star the repository on GitHub.

References

To learn more about Data binding and MVVM

Introduction Welcome to our newest blog post, where we explore the vibrant realm of app development with .NET MAUI! In this deta...

Dev Express - Data Grid Control for .NET MAUI (Lifetime - Free plugin) Dev Express - Data Grid Control for .NET MAUI (Lifetime - Free plugin)

A blog about android developement

Introduction

Welcome to our newest blog post, where we explore the vibrant realm of app development with .NET MAUI! In this detailed guide, we dive into the intricacies of the "DataGrid Control for .NET MAUI," an outstanding free plugin crafted to simplify your data management process. Uncover how this plugin enables developers to effortlessly sort, filter, and present data, elevating user experiences across cross-platform applications.


Telerik, SyncFusion, and DevExpress offer paid licenses, often accompanied by trial versions or community licenses under specific terms. However, DevExpress stands out by providing a set of controls that you can use absolutely free!. As the demand for seamless data visualization and interaction grows, this free plugin emerges as a game-changer for .NET MAUI enthusiasts.


How can I obtain a free license for DevExpress?

  • Visit the following link FREE Xamarin UI Controls
  • Click "GET IT FREE" button in the screen, will redirect to another page.
  • In this page, you need to enter your details and valid mail id.
  • After the successful submission, the DevExpress team will send the nuget api link to the entered email id.

Quick Links:


Project Setup:

  • Launch Visual Studio 2022, and in the start window click Create a new project to create a new project.
  • In the Create a new project window, select MAUI in the All project types drop-down, select the .NET MAUI App template, and click the Next button:
  • In the configure your new project window, name your project, choose a suitable location for it, and click the Next button:
  • In the Additional information window, click the Create button:
  • Once the project is created, we can able to see the Android, iOS, Windows and other running options in the toolbar. Press the emulator or run button to build and run the app

Install Plugin:

In this steps, we will see the steps to install "DevExpress Grid" in Visual Studio 2022:
  • Access NuGet Package Manager: In Visual Studio, right-click on your .NET MAUI project in the Solution Explorer. From the context menu, select "Manage NuGet Packages."
  • Search for "DevExpress.XamarinForms.DataGrid": In the NuGet Package Manager, click on the "Browse" tab. In the search bar, type "DevExpress.XamarinForms.DataGrid" and hit Enter. The package should appear in the search results.
  • Select and Install the Package: Once you find "DevExpress.XamarinForms.DataGrid" in the search results, click on it to select it. Ensure you choose the appropriate version compatible with your .NET MAUI project. Click on the "Install" button to begin the installation process.
  • Accept License Agreement: During the installation, you may be prompted to accept the license agreement. Review the terms and conditions and click on the "Accept" button to proceed.
  • Wait for Installation to Complete: Visual Studio will download and install the package along with its dependencies. This process may take a few moments, depending on your internet connection speed.
  • Verify Installation: After the installation is complete, verify that there are no error messages in the Output window. This indicates a successful installation of the package.

Implementation

Open MauiProgram.cs file, and add ".UseDevExpress()" in builder like below

var builder = MauiApp.CreateBuilder();
builder
.UseMauiApp<App>()
.UseDevExpress()
.ConfigureFonts(fonts =>
{
fonts.AddFont("OpenSans-Regular.ttf", "OpenSansRegular");
fonts.AddFont("OpenSans-Semibold.ttf", "OpenSansSemibold");
});

Add Namespace in XAML:

In your .NET MAUI XAML files where you intend to use the Dev Express - DataGrid, make sure to add the appropriate XML namespace. For example:

xmlns:dxg="clr-namespace:DevExpress.Maui.DataGrid;assembly=DevExpress.Maui.DataGrid"
xmlns:dxe="clr-namespace:DevExpress.Maui.Editors;assembly=DevExpress.Maui.Editors"
xmlns:dxc="clr-namespace:DevExpress.Maui.Controls;assembly=DevExpress.Maui.Controls"

Adjust the namespace and assembly name based on the specifics of the DataGrid component you installed.


Implement DataGrid in Your XAML:

You can now implement the DataGrid control in your XAML files using the namespace you added. For example:

<dg:DataGrid RefreshingEnabled="True"
             BackgroundColor="White"
                     IsRefreshing="{Binding Refreshing}"
                     PullToRefreshCommand="{Binding OnDataGridRefreshCommand}"
                     SelectionEnabled="True"
                     SelectedItem="{Binding SelectedItem}"
                     RowHeight="70"
                     HeaderHeight="70"
                     ItemsSource="{Binding Items}"
                     HeaderBackground="Red">

    <dg:DataGrid.NoDataView>
        <Label Text="Nothing to see here" HorizontalOptions="Center" VerticalOptions="Center" />
    </dg:DataGrid.NoDataView>
    <dg:DataGrid.Columns>
        <dg:DataGridColumn Title="Image" PropertyName="Image" Width="150" SortingEnabled="False">
            <dg:DataGridColumn.CellTemplate>
                <DataTemplate>
                    <Image Source="{Binding}" HorizontalOptions="Center" VerticalOptions="Center"
                           Aspect="AspectFit" HeightRequest="60" />
                </DataTemplate>
            </dg:DataGridColumn.CellTemplate>
        </dg:DataGridColumn>
        <dg:DataGridColumn Title="Name" PropertyName="Name" Width="100"/>
        <dg:DataGridColumn Title="Location" PropertyName="Location"  Width="100"/>
        <dg:DataGridColumn Title="Population" PropertyName="Population"  Width="100"/>
        <dg:DataGridColumn Title="Latitude" PropertyName="Latitude"  Width="100"/>
        <dg:DataGridColumn Title="Longitude" PropertyName="Longitude"  Width="100"/>
    </dg:DataGrid.Columns>
    <dg:DataGrid.RowsBackgroundColorPalette>
        <dg:PaletteCollection>
            <Color>#e1e1e1</Color>
            <Color>#ffffff</Color>
        </dg:PaletteCollection>
    </dg:DataGrid.RowsBackgroundColorPalette>
</dg:DataGrid>

The above code snippet represents a DataGrid component in .NET MAUI application. Let's break down the properties and their meanings in the context of this DataGrid:

  • ItemsSource="{Binding Items}": Binds the DataGrid to a collection of items represented by the "Items" property in the ViewModel. Each item in this collection corresponds to a row in the DataGrid.
  • dxg:DataGridView.Columns: Specifies the columns to be displayed in the DataGrid.
  • dxg:TemplateColumn: We can use the custom templated column
  • dxg:TextColumn: Used to display the values in the column
  • dxg:DateColumn: Used to display the date values with datepicker selection in the column
  • dxg:ComoboxColumn: Used to display the values with dropdown selection in the column
  • dxg:CheckBoxColumn : Used to display the boolen selection with checkbox in the column

The below code snippet configures a DataGrid component with specific properties and templates, allowing users to view and interact with data in a visually appealing manner.


The Code Behind or MVVM view model properties are similar to listview control and no specific code required

using System.Collections.ObjectModel;
using System.Net.Http;
using System.Net.Http.Json;

namespace MauiDevExpress
{
    public partial class MainPage : ContentPage
    {
        public MainPage()
        {
            BindingContext = this;
            InitializeComponent();
        }

        protected override async void OnAppearing()
        {
            base.OnAppearing();
            await Task.Delay(2000);
            LoadData();
        }

        private void LoadData()
        {
            var monkeys = new List<Monkey>
            {
                new Monkey
                {
                    Name = "Chimpanzee",
                    Location = "Africa",
                    Details = "Chimpanzees are intelligent primates known for their problem-solving abilities.",
                    Image = "chimpanzee.jpg",
                    Population = 150000,
                    Latitude = -1.2921f,
                    Longitude = 36.8219f,
                    BirthDate = new DateTime(2000, 1, 15),
                    AccessLevel = AccessLevel.Admin
                },
                new Monkey
                {
                    Name = "Orangutan",
                    Location = "Borneo",
                    Details = "Orangutans are great apes native to the rainforests of Borneo and Sumatra.",
                    Image = "orangutan.jpg",
                    Population = 70000,
                    Latitude = 1.3521f,
                    Longitude = 110.4647f,
                    BirthDate = new DateTime(2005, 3, 20),
                    AccessLevel = AccessLevel.User
                },
                new Monkey
                {
                    Name = "Gorilla",
                    Location = "Africa",
                    Details = "Gorillas are the largest primates and share about 98.3% of their DNA with humans.",
                    Image = "gorilla.jpg",
                    Population = 100000,
                    Latitude = -0.2280f,
                    Longitude = 15.8277f,
                    BirthDate = new DateTime(1998, 7, 10),
                    AccessLevel = AccessLevel.Admin
                },
                // Add more monkey instances with BirthDate and AccessLevel properties
                new Monkey
                {
                    Name = "Howler Monkey",
                    Location = "South America",
                    Details = "Howler monkeys are known for their loud vocalizations that can be heard up to 3 miles away.",
                    Image = "howler_monkey.jpg",
                    Population = 50000,
                    Latitude = -14.2350f,
                    Longitude = -51.9253f,
                    BirthDate = new DateTime(2002, 5, 3),
                    AccessLevel = AccessLevel.User
                },
                new Monkey
                {
                    Name = "Capuchin Monkey",
                    Location = "Central and South America",
                    Details = "Capuchin monkeys are highly intelligent and are often used in scientific research.",
                    Image = "capuchin_monkey.jpg",
                    Population = 30000,
                    Latitude = 4.7100f,
                    Longitude = -74.0721f,
                    BirthDate = new DateTime(2007, 9, 18),
                    AccessLevel = AccessLevel.Admin
                },
                new Monkey
                {
                    Name = "Spider Monkey",
                    Location = "Central and South America",
                    Details = "Spider monkeys are known for their long limbs and prehensile tail, which they use to swing through trees.",
                    Image = "spider_monkey.jpg",
                    Population = 25000,
                    Latitude = 14.634915f,
                    Longitude = -90.506882f,
                    BirthDate = new DateTime(1999, 11, 7),
                    AccessLevel = AccessLevel.User
                },
                new Monkey
                {
                    Name = "Mandrill",
                    Location = "Africa",
                    Details = "Mandrills are colorful monkeys found in the rainforests of Central Africa.",
                    Image = "mandrill.jpg",
                    Population = 10000,
                    Latitude = 0.2280f,
                    Longitude = 14.8277f,
                    BirthDate = new DateTime(2004, 2, 14),
                    AccessLevel = AccessLevel.Admin
                },
                new Monkey
                {
                    Name = "Tarsier",
                    Location = "Southeast Asia",
                    Details = "Tarsiers are small primates known for their big eyes and unique hunting skills.",
                    Image = "tarsier.jpg",
                    Population = 5000,
                    Latitude = 9.3275f,
                    Longitude = 123.3076f,
                    BirthDate = new DateTime(2001, 8, 22),
                    AccessLevel = AccessLevel.User
                },
                new Monkey
                {
                    Name = "Golden Lion Tamarin",
                    Location = "Brazil",
                    Details = "Golden lion tamarins are endangered primates with striking orange fur and manes.",
                    Image = "golden_lion_tamarin.jpg",
                    Population = 1500,
                    Latitude = -22.9068f,
                    Longitude = -43.1729f,
                    BirthDate = new DateTime(2006, 12, 5),
                    AccessLevel = AccessLevel.Admin
                },
                new Monkey
                {
                    Name = "Proboscis Monkey",
                    Location = "Borneo",
                    Details = "Proboscis monkeys have large noses and are excellent swimmers.",
                    Image = "proboscis_monkey.jpg",
                    Population = 700,
                    Latitude = 2.4604f,
                    Longitude = 115.3502f,
                    BirthDate = new DateTime(2003, 4, 30),
                    AccessLevel = AccessLevel.User
                },
                // Add more monkey instances as needed
                // ...
            };

            dxg.ItemsSource = new ObservableCollection<Monkey>(monkeys);
        }


        public class Monkey
        {
            public string Name { get; set; }
            public string Location { get; set; }
            public string Details { get; set; }
            public string Image { get; set; }
            public int Population { get; set; }
            public float Latitude { get; set; }
            public float Longitude { get; set; }
            public AccessLevel AccessLevel { get; set; }
            public DateTime BirthDate { get; set; }
        }
        public enum AccessLevel
        {
            Admin,
            User
        }
    }

}

Full Code:

Demo

Download Code:

You can download the code from GitHub. If you have any doubts, feel free to post a comment. If you liked this article, and it is useful to you, do like, share the article & star the repository on GitHub.

References

To learn more about DevExpress DataGrid

Introduction Welcome to our latest blog post, where we delve into the dynamic world of app development using .NET MAUI! In this comp...

Data Grid Control for .NET MAUI (Free plugin to Sort, Filter & Show Data) Data Grid Control for .NET MAUI (Free plugin to Sort, Filter & Show Data)

A blog about android developement

Introduction

Welcome to our latest blog post, where we delve into the dynamic world of app development using .NET MAUI! In this comprehensive guide, we explore the intricacies of the "DataGrid Control for .NET MAUI," an exceptional free plugin designed to streamline your data management process. Discover how this plugin empowers developers to effortlessly sort, filter, and display data, enhancing user experiences within cross-platform applications.


In our latest article, we unveil the power of the "DataGrid Control for .NET MAUI," an invaluable plugin that simplifies the complexities of data management in cross-platform app development. As the demand for seamless data visualization and interaction grows, this free plugin emerges as a game-changer for .NET MAUI enthusiasts.


Quick Links:


Project Setup:

  • Launch Visual Studio 2022, and in the start window click Create a new project to create a new project.
  • In the Create a new project window, select MAUI in the All project types drop-down, select the .NET MAUI App template, and click the Next button:
  • In the configure your new project window, name your project, choose a suitable location for it, and click the Next button:
  • In the Additional information window, click the Create button:
  • Once the project is created, we can able to see the Android, iOS, Windows and other running options in the toolbar. Press the emulator or run button to build and run the app

Install Plugin:

In this steps, we will see the steps to install "akgul.Maui.DataGrid" in Visual Studio 2022:
  • Access NuGet Package Manager: In Visual Studio, right-click on your .NET MAUI project in the Solution Explorer. From the context menu, select "Manage NuGet Packages."
  • Search for "akgul.Maui.DataGrid": In the NuGet Package Manager, click on the "Browse" tab. In the search bar, type "akgul.Maui.DataGrid" and hit Enter. The package should appear in the search results.
  • Select and Install the Package: Once you find "akgul.Maui.DataGrid" in the search results, click on it to select it. Ensure you choose the appropriate version compatible with your .NET MAUI project. Click on the "Install" button to begin the installation process.
  • Accept License Agreement: During the installation, you may be prompted to accept the license agreement. Review the terms and conditions and click on the "Accept" button to proceed.
  • Wait for Installation to Complete: Visual Studio will download and install the package along with its dependencies. This process may take a few moments, depending on your internet connection speed.
  • Verify Installation: After the installation is complete, verify that there are no error messages in the Output window. This indicates a successful installation of the "akgul.Maui.DataGrid" package.

Implementation

Add Namespace in XAML:

In your .NET MAUI XAML files where you intend to use the DataGrid, make sure to add the appropriate XML namespace. For example:

xmlns:dg="clr-namespace:Maui.DataGrid;assembly=Maui.DataGrid"

Adjust the namespace and assembly name based on the specifics of the DataGrid component you installed.


Implement DataGrid in Your XAML:

You can now implement the DataGrid control in your XAML files using the namespace you added. For example:

<dg:DataGrid RefreshingEnabled="True"
             BackgroundColor="White"
                     IsRefreshing="{Binding Refreshing}"
                     PullToRefreshCommand="{Binding OnDataGridRefreshCommand}"
                     SelectionEnabled="True"
                     SelectedItem="{Binding SelectedItem}"
                     RowHeight="70"
                     HeaderHeight="70"
                     ItemsSource="{Binding Items}"
                     HeaderBackground="Red">

    <dg:DataGrid.NoDataView>
        <Label Text="Nothing to see here" HorizontalOptions="Center" VerticalOptions="Center" />
    </dg:DataGrid.NoDataView>
    <dg:DataGrid.Columns>
        <dg:DataGridColumn Title="Image" PropertyName="Image" Width="150" SortingEnabled="False">
            <dg:DataGridColumn.CellTemplate>
                <DataTemplate>
                    <Image Source="{Binding}" HorizontalOptions="Center" VerticalOptions="Center"
                           Aspect="AspectFit" HeightRequest="60" />
                </DataTemplate>
            </dg:DataGridColumn.CellTemplate>
        </dg:DataGridColumn>
        <dg:DataGridColumn Title="Name" PropertyName="Name" Width="100"/>
        <dg:DataGridColumn Title="Location" PropertyName="Location"  Width="100"/>
        <dg:DataGridColumn Title="Population" PropertyName="Population"  Width="100"/>
        <dg:DataGridColumn Title="Latitude" PropertyName="Latitude"  Width="100"/>
        <dg:DataGridColumn Title="Longitude" PropertyName="Longitude"  Width="100"/>
    </dg:DataGrid.Columns>
    <dg:DataGrid.RowsBackgroundColorPalette>
        <dg:PaletteCollection>
            <Color>#e1e1e1</Color>
            <Color>#ffffff</Color>
        </dg:PaletteCollection>
    </dg:DataGrid.RowsBackgroundColorPalette>
</dg:DataGrid>

The above code snippet represents a DataGrid component in .NET MAUI application. Let's break down the properties and their meanings in the context of this DataGrid:

  • RefreshingEnabled="True": Indicates that the DataGrid supports pull-to-refresh functionality. Users can pull down to refresh the data displayed in the grid.
  • BackgroundColor="White": Sets the background color of the entire DataGrid component to white.
  • IsRefreshing="{Binding Refreshing}": Binds the IsRefreshing property of the DataGrid to a boolean property named "Refreshing" in the underlying ViewModel. This property likely controls the visual indication of whether the DataGrid is currently refreshing data.
  • PullToRefreshCommand="{Binding OnDataGridRefreshCommand}": Binds the pull-to-refresh action to a command named "OnDataGridRefreshCommand" in the ViewModel. This command is executed when the user performs a pull-to-refresh gesture.
  • SelectionEnabled="True": Allows users to select rows in the DataGrid.
  • SelectedItem="{Binding SelectedItem}": Binds the selected item in the DataGrid to a property named "SelectedItem" in the ViewModel. This property holds the currently selected item in the grid.
  • RowHeight="70": Sets the height of each row in the DataGrid to 70 units.
  • HeaderHeight="70": Sets the height of the header row in the DataGrid to 70 units.
  • ItemsSource="{Binding Items}": Binds the DataGrid to a collection of items represented by the "Items" property in the ViewModel. Each item in this collection corresponds to a row in the DataGrid.
  • HeaderBackground="Red": Sets the background color of the header row to red.
  • dg:DataGrid.NoDataView: Defines a custom view to be displayed when there is no data to show in the DataGrid. In this case, a Label with the text "Nothing to see here" is centered both horizontally and vertically.
  • dg:DataGrid.Columns: Specifies the columns to be displayed in the DataGrid.
  • dg:DataGrid.RowsBackgroundColorPalette: Defines a color palette for alternating row colors in the DataGrid.

This code snippet configures a DataGrid component with specific properties and templates, allowing users to view and interact with data in a visually appealing manner.


The Code Behind or MVVM view model properties are similar to listview control and no specific code required


Full Code:

Demo

Download Code:

You can download the code from GitHub. If you have any doubts, feel free to post a comment. If you liked this article, and it is useful to you, do like, share the article & star the repository on GitHub.

References

To learn more about Swipe View