title: Using a Control Template for all controls across the application
body: <p>I have a control template in one of my pages and i am assigning this template to my textbox's Validation.ErrorTemplate property. The following code would give you a better view.</p>
  
  <pre>&lt;ControlTemplate x:Key="ValidationErrorTemplate"&gt;
              &lt;StackPanel Orientation="Horizontal" HorizontalAlignment="Right"&gt;
                  &lt;AdornedElementPlaceholder/&gt;
                  &lt;Image Name="ValidizorImage" Stretch="None" Source="validizor.gif" ToolTip="{Binding [0].ErrorContent}" ToolTipService.InitialShowDelay="0" ToolTipService.ShowDuration="60000"/&gt;
              &lt;/StackPanel&gt;
  &lt;/ControlTemplate&gt;</pre>
  
  <p>The above template sets the image at the end of the textbox which is having the error. This template is used as below.</p>
  
  <pre>&lt;TextBox Grid.Column="5" Grid.Row="1" x:Name="txtemail" Grid.ColumnSpan="3" Margin="0,1,20,1" Validation.ErrorTemplate="{StaticResource ValidationErrorTemplate}"  /&gt;</pre>
  
  <p>My question here is</p>
  
  <p>I want to move this control template outside of this page so that i can use it across the application. </p>
  
  <p>I tried putting the exact same code of the control template in a user control say "ErrorUC" </p>
  
  <pre>
  &lt;UserControl...&gt;
      &lt;Grid&gt;
          &lt;StackPanel Orientation="Horizontal" HorizontalAlignment="Right"&gt;
              &lt;AdornedElementPlaceholder/&gt;
              &lt;Image Name="ValidizorImage" Stretch="None" Source="validizor.gif" ToolTip="{Binding [0].ErrorContent}" ToolTipService.InitialShowDelay="0" ToolTipService.ShowDuration="60000"/&gt;
          &lt;/StackPanel&gt;
      &lt;/Grid&gt;
  &lt;/UserControl&gt;
  </pre>
  
  <p>and used it as below</p>
  
  <pre>TextBox1.SetResourceReference
  (System.Windows.Controls.Validation.ErrorTemplateProperty, new ErrorUC());</pre>
  
  <p>On running the above code i learnt that "AdornedElementPlaceholder" can be used only in templates and not in user controls. If i comment the same i am not getting the desired result.</p>