Added a visible unique ID per control to better visualize creation and persistence of tabs content.

Author: sskodje

Demo/UserControls/UserControl1.xaml

@@ -10,14 +10,21 @@
         <Grid.RowDefinitions>
             <RowDefinition Height="Auto" />
             <RowDefinition Height="*" />
+            <RowDefinition Height="Auto" />
         </Grid.RowDefinitions>
-        <!--<StackPanel Margin="30,10">-->
-            <Label Content="{Binding TabName}"
-                   FontSize="18" />
-            <ScrollViewer Grid.Row="1">
-                <TextBlock Text="{Binding MyStringContent}"
-                           TextWrapping="Wrap" />
-            </ScrollViewer>
-        <!--</StackPanel>-->
+        <Label Content="{Binding TabName}"
+               FontSize="18" />
+        <ScrollViewer Grid.Row="1">
+            <TextBlock Text="{Binding MyStringContent}"
+                       TextWrapping="Wrap" />
+        </ScrollViewer>
+
+        <StackPanel Grid.Row="2"
+                    Margin="0,20,0,0"
+                    Orientation="Horizontal">
+            <TextBlock Text="Unique control ID: " />
+            <TextBlock x:Name="ID"
+                       FontSize="12" />
+        </StackPanel>
     </Grid>
 </UserControl>

Demo/UserControls/UserControl1.xaml.cs

@@ -1,4 +1,5 @@
-using System.Windows.Controls;
+using System;
+using System.Windows.Controls;
 
 namespace Demo.UserControls
 {
@@ -10,6 +11,7 @@ public partial class UserControl1 : UserControl
         public UserControl1()
         {
             InitializeComponent();
+            this.ID.Text = Guid.NewGuid().ToString();
         }
     }
 }

Demo/UserControls/UserControl2.xaml

@@ -5,7 +5,11 @@
              xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
              mc:Ignorable="d" 
              d:DesignHeight="300" d:DesignWidth="300">
-    <Grid>
+    <Grid Margin="30,10">
+        <Grid.RowDefinitions>
+            <RowDefinition Height="*" />
+            <RowDefinition Height="Auto" />
+        </Grid.RowDefinitions>
         <StackPanel Margin="30,10">
             <Label Content="{Binding TabName}"
                    FontSize="18" />
@@ -15,5 +19,12 @@
                       SelectedItem="{Binding MySelectedNumber}"
                       HorizontalAlignment="Left" />
         </StackPanel>
+        <StackPanel Grid.Row="1"
+                    Margin="0,20,0,0"
+                    Orientation="Horizontal">
+            <TextBlock Text="Unique control ID: " />
+            <TextBlock x:Name="ID"
+                       FontSize="12" />
+        </StackPanel>
     </Grid>
 </UserControl>

Demo/UserControls/UserControl2.xaml.cs

@@ -1,4 +1,5 @@
-using System.Windows.Controls;
+using System;
+using System.Windows.Controls;
 
 namespace Demo.UserControls
 {
@@ -10,6 +11,7 @@ public partial class UserControl2 : UserControl
         public UserControl2()
         {
             InitializeComponent();
+            this.ID.Text = Guid.NewGuid().ToString();
         }
     }
 }

Demo/UserControls/UserControl3.xaml

@@ -11,15 +11,25 @@
             <RowDefinition Height="Auto" />
             <RowDefinition Height="Auto" />
             <RowDefinition Height="*" />
+            <RowDefinition Height="Auto" />
         </Grid.RowDefinitions>
         <Label Content="{Binding TabName}"
                FontSize="18" />
         <TextBlock Text="{Binding MyStringContent}"
                    Grid.Row="1"
                    Margin="0,0,0,20"
                    TextWrapping="Wrap" />
+        
         <Image Source="{Binding MyImageUrl}"
                Grid.Row="2"
                Stretch="Uniform" />
+        
+        <StackPanel Grid.Row="3"
+                    Margin="0,20,0,0"
+                    Orientation="Horizontal">
+            <TextBlock Text="Unique control ID: " />
+            <TextBlock x:Name="ID"
+                       FontSize="12" />
+        </StackPanel>
     </Grid>
 </UserControl>

Demo/UserControls/UserControl3.xaml.cs

@@ -1,4 +1,5 @@
-using System.Windows.Controls;
+using System;
+using System.Windows.Controls;
 
 namespace Demo.UserControls
 {
@@ -10,6 +11,7 @@ public partial class UserControl3 : UserControl
         public UserControl3()
         {
             InitializeComponent();
+            this.ID.Text = Guid.NewGuid().ToString();
         }
     }
 }

Demo/UserControls/UserControl4.xaml

@@ -9,15 +9,23 @@
              d:DesignWidth="300">
     <Grid Margin="30,10">
         <Grid.RowDefinitions>
-            <RowDefinition Height="Auto" />
             <RowDefinition Height="Auto" />
             <RowDefinition Height="*" />
+            <RowDefinition Height="Auto" />
         </Grid.RowDefinitions>
-        <!--<StackPanel Margin="30,10">-->
         <Label Content="{Binding TabName}"
                FontSize="18" />
+
         <CheckBox Grid.Row="1"
                   Content="Is blinking"
-                  IsChecked="{Binding IsBlinking,Mode=TwoWay}"/>
+                  IsChecked="{Binding IsBlinking,Mode=TwoWay}" />
+
+        <StackPanel Grid.Row="4"
+                    Margin="0,20,0,0"
+                    Orientation="Horizontal">
+            <TextBlock Text="Unique control ID: " />
+            <TextBlock x:Name="ID"
+                       FontSize="12" />
+        </StackPanel>
     </Grid>
 </UserControl>

Demo/UserControls/UserControl4.xaml.cs

@@ -1,4 +1,5 @@
-using System.Windows.Controls;
+using System;
+using System.Windows.Controls;
 
 namespace Demo.UserControls
 {
@@ -10,6 +11,7 @@ public partial class UserControl4 : UserControl
         public UserControl4()
         {
             InitializeComponent();
+            this.ID.Text = Guid.NewGuid().ToString();
         }
     }
 }