Log how many CheckBox alive

jonathanpeppers · Aug 17, 2023 · 43af9ec · 43af9ec
1 parent cc55f63
commit 43af9ec
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Showing 2 changed files with 20 additions and 12 deletions.
diff --git a/MauiApp1/MauiApp1/MainPage.xaml b/MauiApp1/MauiApp1/MainPage.xaml
@@ -13,17 +13,8 @@
             <Button Text="ItemSource 1" Clicked="ItemSource_One_Button_Clicked"/>
             <Button Text="ItemSource 2" Clicked="ItemSource_Two_Button_Clicked"/>
         </HorizontalStackLayout>
-        <ListView Grid.Row="1" x:Name="listView" ItemsSource="{Binding EmployeesInfo1}">
-            <ListView.ItemTemplate>
-                <DataTemplate>
-                    <ViewCell>
-                        <CheckBox x:Name="checkBoxCell" Margin="10,0,0,0" IsChecked="{Binding IsChecked}"
-                          VerticalOptions="Center">
-                        </CheckBox>
-                    </ViewCell>
-                </DataTemplate>
-            </ListView.ItemTemplate>
-        </ListView>
+		<ListView Grid.Row="1" x:Name="listView" ItemsSource="{Binding EmployeesInfo1}">
+		</ListView>
     </Grid>
 
 </ContentPage>
diff --git a/MauiApp1/MauiApp1/MainPage.xaml.cs b/MauiApp1/MauiApp1/MainPage.xaml.cs
@@ -1,28 +1,45 @@
 
 using System.Collections.ObjectModel;
 using System.ComponentModel;
+using System.Diagnostics;
 
 namespace MauiApp1
 {
     public partial class MainPage : ContentPage
     {
+        List<WeakReference> references = new List<WeakReference>();
 
 
         public MainPage()
         {
             InitializeComponent();
 
+            listView.ItemTemplate = new DataTemplate(() =>
+            {
+                var cell = new ViewCell { View = new Label() };
+                references.Add(new(cell.View));
+                return cell;
+            });
+        }
+
+        void Log()
+        {
+            Debug.WriteLine($"CheckBox's alive: {references.Count(l => l.IsAlive)}");
         }
 
         private void ItemSource_One_Button_Clicked(object sender, EventArgs e)
         {
+			GC.Collect();
+			Log();
             listView.ItemsSource = employeeInfoRepository.EmployeesInfo1;
 
         }
 
         private void ItemSource_Two_Button_Clicked(object sender, EventArgs e)
         {
-            listView.ItemsSource = employeeInfoRepository.EmployeesInfo2;
+			GC.Collect();
+			Log();
+			listView.ItemsSource = employeeInfoRepository.EmployeesInfo2;
         }
     }
 }