Changed the sample to .NET 10

Author: Bharathi4332

DetectPdfChanges/DetectPdfChanges.csproj

@@ -1,8 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
 	<PropertyGroup>
-		<TargetFrameworks>net9.0-android;net9.0-ios;net9.0-maccatalyst</TargetFrameworks>
-		<TargetFrameworks Condition="$([MSBuild]::IsOSPlatform('windows'))">$(TargetFrameworks);net9.0-windows10.0.19041.0</TargetFrameworks>
+		<TargetFrameworks>net10.0-android;net10.0-ios;net10.0-maccatalyst</TargetFrameworks>
+		<TargetFrameworks Condition="$([MSBuild]::IsOSPlatform('windows'))">$(TargetFrameworks);net10.0-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);net9.0-tizen</TargetFrameworks> -->
 
@@ -69,7 +69,7 @@
 
 	<ItemGroup>
 		<PackageReference Include="Microsoft.Maui.Controls" Version="$(MauiVersion)" />
-		<PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="9.0.0" />
+		<PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="10.0.0" />
 		<PackageReference Include="Syncfusion.Maui.PdfViewer" Version="*" />
 	</ItemGroup>
 

DetectPdfChanges/MainPage.xaml.cs

@@ -9,28 +9,37 @@ public MainPage()
             InitializeComponent();
         }
 
-        private void PdfViewer_FormFieldValueChanged(object sender, FormFieldValueChangedEventArgs e)
+        private async void PdfViewer_FormFieldValueChanged(object sender, FormFieldValueChangedEventArgs e)
         {
-            if (Application.Current != null)
-                Application.Current.Windows[0].Page?.DisplayAlert("PDF Edited", $"{e.FormField} value is changed.", "OK");
+            var page = Application.Current?.Windows?.FirstOrDefault()?.Page;
+            if (page is null)
+                return;
+
+            await page.DisplayAlertAsync("PDF Edited", $"{e.FormField} value is changed.", "OK");
         }
 
-        private void PdfViewer_AnnotationAdded(object sender, AnnotationEventArgs e)
+        private async void PdfViewer_AnnotationAdded(object sender, AnnotationEventArgs e)
         {
-            if (Application.Current != null)
-                Application.Current.Windows[0].Page?.DisplayAlert("PDF Edited", "Annotation is added.", "OK");
+            var page = Application.Current?.Windows?.FirstOrDefault()?.Page;
+            if (page is null)
+                return;
+            await page.DisplayAlertAsync("PDF Edited", "Annotation is added.", "OK");
         }
 
-        private void PdfViewer_AnnotationEdited(object sender, AnnotationEventArgs e)
+        private async void PdfViewer_AnnotationEdited(object sender, AnnotationEventArgs e)
         {
-            if (Application.Current != null)
-                Application.Current.Windows[0].Page?.DisplayAlert("PDF Edited", $"Annotation is edited.", "OK");
+            var page = Application.Current?.Windows?.FirstOrDefault()?.Page;
+            if (page is null)
+                return;
+            await page.DisplayAlertAsync("PDF Edited", $"Annotation is edited.", "OK");
         }
 
-        private void PdfViewer_AnnotationRemoved(object sender, AnnotationEventArgs e)
+        private async void PdfViewer_AnnotationRemoved(object sender, AnnotationEventArgs e)
         {
-            if(Application.Current != null)
-                Application.Current.Windows[0].Page?.DisplayAlert("PDF Edited", $"Annotation is removed.", "OK");
+            var page = Application.Current?.Windows?.FirstOrDefault()?.Page;
+            if (page is null)
+                return;
+            await page.DisplayAlertAsync("PDF Edited", $"Annotation is removed.", "OK");
         }
     }
 }