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POWPF- Validation -The validation error message goes behind the other controls because of AdornerDecorator
 

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    <p>I have implemented IDataErrorInfo in my ViewModel to return a string if the text box has error.</p> <pre><code> public string this[string columnName] { get { return "Error-- This is a long error message - sd"; } } </code></pre> <p>But this error message goes behind the other control on the UI as shown below.</p> <p><img src="https://i.stack.imgur.com/92x0R.jpg" alt="alt text"></p> <p>Below is the xaml:</p> <pre><code>&lt;Window x:Class="Test.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Window1" Height="600" Width="600"&gt; &lt;Window.Resources&gt; &lt;ControlTemplate x:Key="validationTemplateNew"&gt; &lt;DockPanel LastChildFill="True"&gt; &lt;TextBlock Name="ErrorText" DockPanel.Dock="Bottom" Foreground="White" Background="Red" FontSize="12" Padding="2" FontFamily="Trebuchet MS" Margin="5,5,0,0" TextWrapping="Wrap" Text="{Binding [0].ErrorContent}" &gt;&lt;/TextBlock&gt; &lt;AdornedElementPlaceholder Name="ErrorTextBox" /&gt; &lt;/DockPanel&gt; &lt;/ControlTemplate&gt; &lt;Style x:Key="ValidationStyle" TargetType="{x:Type TextBox}"&gt; &lt;Style.Triggers&gt; &lt;Trigger Property="Validation.HasError" Value="True"&gt; &lt;Setter Property="BorderBrush" Value="Red" /&gt; &lt;Setter Property="BitmapEffect"&gt; &lt;Setter.Value&gt; &lt;BitmapEffectGroup&gt; &lt;OuterGlowBitmapEffect GlowColor="Red" GlowSize="3" Noise="0.6"&gt;&lt;/OuterGlowBitmapEffect&gt; &lt;/BitmapEffectGroup&gt; &lt;/Setter.Value&gt; &lt;/Setter&gt; &lt;/Trigger&gt; &lt;/Style.Triggers&gt; &lt;/Style&gt; &lt;/Window.Resources&gt; &lt;Grid&gt; &lt;ItemsControl Name="ItemCtrl"&gt; &lt;AdornerDecorator&gt; &lt;TextBox FontSize="11" Margin="10" Width="250" VerticalAlignment="Center" Text="{Binding Path=StrText, ValidatesOnDataErrors=True, UpdateSourceTrigger=PropertyChanged}" Validation.ErrorTemplate="{StaticResource validationTemplateNew}" Style="{StaticResource ValidationStyle}" &gt; &lt;/TextBox&gt; &lt;/AdornerDecorator&gt; &lt;TextBox Width="250" Text="ASDFASFASDFASDFASDFASDFASDF"/&gt; &lt;TextBox Width="250" Text="ASDFASFASDFASDFASDFASDFASDF"/&gt; &lt;TextBox Width="250" Text="ASDFASFASDFASDFASDFASDFASDF"/&gt; &lt;TextBox Width="250" Text="ASDFASFASDFASDFASDFASDFASDF"/&gt; &lt;TextBox Width="250" Text="ASDFASFASDFASDFASDFASDFASDF"/&gt; &lt;/ItemsControl&gt; &lt;/Grid&gt; &lt;/Window&gt; </code></pre> <p>Please let me know how to use AdornerDecorator such that the error message overlaps the other controls and doesn't go behind.</p> <p>My application is such that if I don't use AdornerDecorator, the error message is not displayed at all. </p>
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