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POUser Control Not Rendering When Used as a DataTemplate?
 

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  1. POUser Control Not Rendering When Used as a DataTemplate?
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    <p>I have a usercontrol which I want to use as a DataTemplate in a Listbox.</p> <p>This works:</p> <pre><code>&lt;ListBox&gt; &lt;ListBox.ItemTemplate&gt; &lt;DataTemplate&gt; &lt;Grid x:Name="Grid" Height="100" Width="880" Background="LightGray"&gt; &lt;Grid.RowDefinitions&gt; &lt;RowDefinition Height="24"/&gt; &lt;RowDefinition Height="24"/&gt; &lt;RowDefinition Height="24"/&gt; &lt;RowDefinition Height="24"/&gt; &lt;/Grid.RowDefinitions&gt; &lt;Grid.ColumnDefinitions&gt; &lt;ColumnDefinition Width="190" /&gt; &lt;ColumnDefinition Width="100" /&gt; &lt;ColumnDefinition Width="100" /&gt; &lt;ColumnDefinition Width="100" /&gt; &lt;ColumnDefinition Width="190" /&gt; &lt;ColumnDefinition Width="200" /&gt; &lt;/Grid.ColumnDefinitions&gt; &lt;Label Grid.Column="0" Grid.Row="0"&gt;Client&lt;/Label&gt; &lt;Label Grid.Column="0" Grid.Row="2"&gt;Contact&lt;/Label&gt; &lt;Label Grid.Column="1" Grid.Row="0"&gt;Date Presentation&lt;/Label&gt; &lt;Label Grid.Column="2" Grid.Row="0"&gt;Action&lt;/Label&gt; &lt;Label Grid.Column="3" Grid.Row="0"&gt;Date Interview&lt;/Label&gt; &lt;Label Grid.Column="3" Grid.Row="2"&gt;Time Interview&lt;/Label&gt; &lt;Label Grid.Column="4" Grid.Row="0"&gt;Remarks&lt;/Label&gt; &lt;Label Grid.Column="5" Margin="0,0,2,0"&gt;managed by&lt;/Label&gt; &lt;ComboBox Grid.Column="0" Grid.Row="1" Margin="2" Text="{Binding Path=Customer}"&gt; &lt;!--Template--&gt; &lt;/ComboBox&gt; &lt;TextBox Grid.Column="0" Grid.Row="3" Margin="2" Text="{Binding Path=Contact}"&gt;&lt;/TextBox&gt; &lt;TextBox Grid.Column="1" Grid.Row="1" Margin="2" Text="{Binding Path=PresentationDate}"&gt;&lt;/TextBox&gt; &lt;ComboBox Grid.Column="2" Grid.Row="1" Margin="2" Text="{Binding Path=Action}"&gt; &lt;!--Template--&gt; &lt;/ComboBox&gt; &lt;TextBox Grid.Column="3" Grid.Row="1" Margin="2" Text="{Binding Path=InterviewDate}"&gt;&lt;/TextBox&gt; &lt;TextBox Grid.Column="3" Grid.Row="3" Margin="2" Text="{Binding Path=InterviewTime}"&gt;&lt;/TextBox&gt; &lt;TextBox Grid.Column="4" Grid.Row="1" Grid.RowSpan="3" Margin="2" Text="{Binding Path=Remarks}"&gt;&lt;/TextBox&gt; &lt;StackPanel Orientation="Horizontal" Grid.Column="5" Grid.Row="1" &gt; &lt;ComboBox Width="124" Text="{Binding Path=Manager}" Margin="2"&gt;&lt;/ComboBox&gt; &lt;Button Width="60" Height="20" Margin="4,0,0,0" &gt;Mail&lt;/Button&gt; &lt;/StackPanel&gt; &lt;CheckBox Grid.Column="5" Grid.Row="3" Margin="2,2,4,2"&gt;Rejection communicated&lt;/CheckBox&gt; &lt;/Grid&gt; &lt;/DataTemplate&gt; &lt;/ListBox.ItemTemplate&gt; &lt;/ListBox&gt; </code></pre> <p>If I put the exact same code from between the <code>&lt;DataTemplate</code>> tags:</p> <pre><code>&lt;UserControl x:Class="CandiMan.View.CandidatePresentationControl" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:cm="clr-namespace:CandiMan;assembly=CandiMan" xmlns:vw="clr-namespace:CandiMan.View;assembly=CandiMan" xmlns:vm="clr-namespace:CandiMan.ViewModel;assembly=CandiMan" Height="100" Width="880" BorderBrush="Black" BorderThickness="1"&gt; &lt;Grid x:Name="Grid" Height="100" Width="880" Background="LightGray"&gt; &lt;Grid.RowDefinitions&gt; &lt;RowDefinition Height="24"/&gt; &lt;RowDefinition Height="24"/&gt; &lt;RowDefinition Height="24"/&gt; &lt;RowDefinition Height="24"/&gt; &lt;/Grid.RowDefinitions&gt; &lt;Grid.ColumnDefinitions&gt; &lt;ColumnDefinition Width="190" /&gt; &lt;ColumnDefinition Width="100" /&gt; &lt;ColumnDefinition Width="100" /&gt; &lt;ColumnDefinition Width="100" /&gt; &lt;ColumnDefinition Width="190" /&gt; &lt;ColumnDefinition Width="200" /&gt; &lt;/Grid.ColumnDefinitions&gt; &lt;Label Grid.Column="0" Grid.Row="0"&gt;Client&lt;/Label&gt; &lt;Label Grid.Column="0" Grid.Row="2"&gt;Contact&lt;/Label&gt; &lt;Label Grid.Column="1" Grid.Row="0"&gt;Date Presentation&lt;/Label&gt; &lt;Label Grid.Column="2" Grid.Row="0"&gt;Action&lt;/Label&gt; &lt;Label Grid.Column="3" Grid.Row="0"&gt;Date Interview&lt;/Label&gt; &lt;Label Grid.Column="3" Grid.Row="2"&gt;Time Interview&lt;/Label&gt; &lt;Label Grid.Column="4" Grid.Row="0"&gt;Remarks&lt;/Label&gt; &lt;Label Grid.Column="5" Margin="0,0,2,0"&gt;managed by&lt;/Label&gt; &lt;ComboBox Grid.Column="0" Grid.Row="1" Margin="2" Text="{Binding Path=Customer}"&gt; &lt;!--Template--&gt; &lt;/ComboBox&gt; &lt;TextBox Grid.Column="0" Grid.Row="3" Margin="2" Text="{Binding Path=Contact}"&gt;&lt;/TextBox&gt; &lt;TextBox Grid.Column="1" Grid.Row="1" Margin="2" Text="{Binding Path=PresentationDate}"&gt;&lt;/TextBox&gt; &lt;ComboBox Grid.Column="2" Grid.Row="1" Margin="2" Text="{Binding Path=Action}"&gt; &lt;!--Template--&gt; &lt;/ComboBox&gt; &lt;TextBox Grid.Column="3" Grid.Row="1" Margin="2" Text="{Binding Path=InterviewDate}"&gt;&lt;/TextBox&gt; &lt;TextBox Grid.Column="3" Grid.Row="3" Margin="2" Text="{Binding Path=InterviewTime}"&gt;&lt;/TextBox&gt; &lt;TextBox Grid.Column="4" Grid.Row="1" Grid.RowSpan="3" Margin="2" Text="{Binding Path=Remarks}"&gt;&lt;/TextBox&gt; &lt;StackPanel Orientation="Horizontal" Grid.Column="5" Grid.Row="1" &gt; &lt;ComboBox Width="124" Text="{Binding Path=Manager}" Margin="2"&gt;&lt;/ComboBox&gt; &lt;Button Width="60" Height="20" Margin="4,0,0,0" &gt;Mail&lt;/Button&gt; &lt;/StackPanel&gt; &lt;CheckBox Grid.Column="5" Grid.Row="3" Margin="2,2,4,2"&gt;Rejection communicated&lt;/CheckBox&gt; &lt;/Grid&gt; &lt;/UserControl&gt; </code></pre> <p>into a usercontrol named CandidatePresentationControl and do it like</p> <pre><code>&lt;ListBox&gt; &lt;ListBox.ItemTemplate&gt; &lt;DataTemplate&gt; &lt;Grid&gt; &lt;vw:CandidatePresentationControl/&gt; &lt;/Grid&gt; &lt;/DataTemplate&gt; &lt;/ListBox.ItemTemplate&gt; &lt;/ListBox&gt; </code></pre> <p>it does not get rendered. No errors, just an empty listbox. Can someone help me??</p> <p>Thank you!</p> <p>edit: I forgot something, dunno if it matters: The whole thing I'm doing this in, is a usercontrol, too.</p>
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    1. USMichael Niemand
    1. USMichael Niemand
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    1. COWhere's your user control XAML?
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      1. POUser Control Not Rendering When Used as a DataTemplate?
      1. USKent Boogaart
    2. COI dumbed down the example a bit for better readability. Its basically the stuff in the 2nd Code box above, plus a grid and some more text boxes and labels.
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      1. POUser Control Not Rendering When Used as a DataTemplate?
      1. USMichael Niemand
    3. COIs there any info in the Output window of VS when you run the app in debug mode?
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      1. POUser Control Not Rendering When Used as a DataTemplate?
      1. USBen Childs
 

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