Home / Community & Support / Developer Productivity Tools Forums / Silverlight > Expander > RadExpander - HeaderTemplate Issue

• Stefan Buys

  Posted on Aug 23, 2011 (permalink)

  Hi
  
  I have a RadExpander (2011 Q2) with a custom HeaderTemplate.
  
  See below:
  
  

  <telerik:RadExpander>

      <telerik:RadExpander.HeaderTemplate>

          <DataTemplate>

              <Grid>

                  <Grid.ColumnDefinitions>

                      <ColumnDefinition Width="0.5*"/>

                      <ColumnDefinition Width="0.5*" />

                  </Grid.ColumnDefinitions>

                  <dataInput:Label Content="{Binding Path=QueryDetails, Mode=TwoWay}" Grid.Column="0" FontWeight="Bold" Margin="0,0,10,0" Height="Auto" />

                  <dataInput:Label Content="Queries" Grid.Column="1" FontWeight="Bold" HorizontalAlignment="Right"  Margin="0,0,10,0" Height="Auto" />

              </Grid>

          </DataTemplate>

      </telerik:RadExpander.HeaderTemplate>
...

  </telerik:RadExpander>

  
  I am binding the first label to a String in my ViewModel, but the UI never seems to display the value via the binding. I have tried binding the property to a label somewhere else on the page (outside the template) and it works fine.
  
  Any advise will be welcome.
  
  Stefan

  Reply

• Tina Stancheva Tina Stancheva

  Posted on Aug 26, 2011 (permalink)

  Hello Stefan,
  
  The HeaderTemplate of the RadExpander will be only applied if the Header property is bound to a data object. Only then the control will look for a HeaderTemplate to set the visual representation of the business object bound to the header.
  
  From the code snippet you sent I don't see if the RadExpander.Header property is databound. If it's not binding it should fix the issue. If, however, this is not the case, then please send us a sample project illustrating your scenario so that we can further investigate the issue. Thank you in advance.
  
  Regards,
  Tina Stancheva
  the Telerik team

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