950873-Updated .NET Version for Dataform sample

CustomizeCheckBoxColor/CustomizeCheckBoxColor/App.xaml.cs

@@ -5,7 +5,10 @@ public partial class App : Application
 	public App()
 	{
 		InitializeComponent();
-
-		MainPage = new AppShell();
 	}
+
+    protected override Window CreateWindow(IActivationState? activationState)
+    {
+        return new Window(new MainPage());
+    }
 }

CustomizeCheckBoxColor/CustomizeCheckBoxColor/CustomizeCheckBoxColor.csproj

@@ -1,15 +1,16 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
 	<PropertyGroup>
-		<TargetFrameworks>net7.0-android;net7.0-ios;net7.0-maccatalyst</TargetFrameworks>
-		<TargetFrameworks Condition="$([MSBuild]::IsOSPlatform('windows'))">$(TargetFrameworks);net7.0-windows10.0.19041.0</TargetFrameworks>
+		<TargetFrameworks>net9.0-android;net9.0-ios;net9.0-maccatalyst</TargetFrameworks>
+		<TargetFrameworks Condition="$([MSBuild]::IsOSPlatform('windows'))">$(TargetFrameworks);net9.0-windows10.0.19041.0</TargetFrameworks>
 		<!-- Uncomment to also build the tizen app. You will need to install tizen by following this: https://github.com/Samsung/Tizen.NET -->
 		<!-- <TargetFrameworks>$(TargetFrameworks);net7.0-tizen</TargetFrameworks> -->
 		<OutputType>Exe</OutputType>
 		<RootNamespace>CustomizeCheckBoxColor</RootNamespace>
 		<UseMaui>true</UseMaui>
 		<SingleProject>true</SingleProject>
 		<ImplicitUsings>enable</ImplicitUsings>
+		<Nullable>enable</Nullable>
 
 		<!-- Display name -->
 		<ApplicationTitle>CustomizeCheckBoxColor</ApplicationTitle>
@@ -49,9 +50,13 @@
 	</ItemGroup>
 
 	<ItemGroup>
-		<PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="7.0.0" />
+		<PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="*" />
 		<PackageReference Include="Syncfusion.Maui.Core" Version="*" />
 		<PackageReference Include="Syncfusion.Maui.DataForm" Version="*" />
 	</ItemGroup>
 
+	<ItemGroup>
+	  <PackageReference Include="Microsoft.Maui.Controls" Version="$(MauiVersion)" />
+	</ItemGroup>
+
 </Project>

CustomizeCheckBoxColor/CustomizeCheckBoxColor/MainPage.xaml

@@ -3,6 +3,7 @@
              xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
              xmlns:local="clr-namespace:CustomizeCheckBoxColor"
              xmlns:dataForm="clr-namespace:Syncfusion.Maui.DataForm;assembly=Syncfusion.Maui.DataForm"
+             x:DataType="local:DataFormViewModel"
              x:Class="CustomizeCheckBoxColor.MainPage">
 
     <Grid RowDefinitions="0.9*, 1, 60">

CustomizeCheckBoxColor/CustomizeCheckBoxColor/Sample/Behavior/DataFormBehavior.cs

@@ -4,11 +4,11 @@ namespace CustomizeCheckBoxColor
 {
     public class DataFormBehavior : Behavior<ContentPage>
     {
-        private SfDataForm dataForm;
+        private SfDataForm? dataForm;
 
-        private Button applyButton;
+        private Button? applyButton;
 
-        private Button cancelButton;
+        private Button? cancelButton;
         protected override void OnAttachedTo(ContentPage bindable)
         {
             base.OnAttachedTo(bindable);
@@ -38,7 +38,7 @@ protected override void OnAttachedTo(ContentPage bindable)
                 this.applyButton.Clicked += OnApplyButtonClicked;
             }
         }
-        private void OnGenerateDataFormItem(object sender, GenerateDataFormItemEventArgs e)
+        private void OnGenerateDataFormItem(object? sender, GenerateDataFormItemEventArgs e)
         {
             if (e.DataFormItem!= null)
             {
@@ -48,21 +48,21 @@ private void OnGenerateDataFormItem(object sender, GenerateDataFormItemEventArgs
                 }
             }
         }
-        private async void OnApplyButtonClicked(object sender, EventArgs e)
+        private async void OnApplyButtonClicked(object? sender, EventArgs e)
         {
-            if (this.dataForm != null && App.Current?.MainPage != null)
+            if (this.dataForm != null)
             {
                 if (this.dataForm.Validate())
                 {
-                    await App.Current.MainPage.DisplayAlert("", "Applied successfully", "OK");
+                    await DisplayAlert("", "Applied successfully", "OK");
                 }
                 else
                 {
-                    await App.Current.MainPage.DisplayAlert("", "Please enter the required details", "OK");
+                    await DisplayAlert("", "Please enter the required details", "OK");
                 }
             }
         }
-        private void OnCancelButtonClicked(object sender, EventArgs e)
+        private void OnCancelButtonClicked(object? sender, EventArgs e)
         {
             if (this.dataForm != null)
 
@@ -88,5 +88,18 @@ protected override void OnDetachingFrom(ContentPage bindable)
                 this.dataForm.GenerateDataFormItem -= this.OnGenerateDataFormItem;
             }
         }
+
+        /// <summary>
+        /// Displays an alert dialog to the user.
+        /// </summary>
+        /// <param name="title">The title of the alert dialog.</param>
+        /// <param name="message">The message to display.</param>
+        /// <param name="cancel">The text for the cancel button.</param>
+        /// <returns>A task representing the asynchronous alert display operation.</returns>
+        private Task DisplayAlert(string title, string message, string cancel)
+        {
+            return App.Current?.Windows?[0]?.Page!.DisplayAlert(title, message, cancel)
+                   ?? Task.FromResult(false);
+        }
     }
 }

CustomizeCheckBoxColor/CustomizeCheckBoxColor/Sample/Model/DataFormModel.cs

@@ -11,6 +11,7 @@ public DataFormModel()
             this.Address = string.Empty;
             this.City = string.Empty;
             this.Country = string.Empty;
+            this.BirthDate = string.Empty;
         }
 
         [Display(Prompt = "Enter your name")]