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Wrapping text in GridViewColumn.Header

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GridView

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answered on 14 Sep 2009, 06:42 AM

242200-headertext-wrapping.zip

Hi D. Omar,

Unfortunately the property is not yet available and your best bet is still using the approach described in that thread. I am also attaching you a sample which does the same - it just uses the latest binaries (Q2 SP1).

Greetings,
Kalin Milanov
the Telerik team

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answered on 30 Sep 2009, 02:04 AM

Ok, I need to have full crontrol on what goes on which line rather than leaving it to the AlignmentContentPresenter control to do the wrapping. I figured out I could just set it in XAML like this:

    
            <telerikGridView:GridViewDataColumn UniqueName="MyColumn">  
        
               <telerikGridView:GridViewDataColumn.Header> 
        
                  <StackPanel> 
        
                     <TextBlock Text="Line1" /> 
        
                     <TextBlock Text="Line2" /> 
        
                  </StackPanel> 
        
               </telerikGridView:GridViewDataColumn.Header> 
        
            </telerikGridView:GridViewDataColumn>

But I need to do it programmatically as the data for the header comes from a data source. I tried the following code and it did not work, am I doing something wrong?

    
            var header = new StackPanel();  
        
            header.Children.Add(new TextBlock { Text = "Line1", TextAlignmentTextAlignment=TextAlignment.Center } );  
        
            header.Children.Add(new TextBlock { Text = "Line2", TextAlignmentTextAlignment=TextAlignment.Center } );  
        
            ret.Header = header;

Here is the exception information:

    
            {System.Windows.Markup.XamlParseException:  [Line: 0 Position: 0]  
        
               --- Inner Exception ---  
        
            Element is already the child of another element.  
        
             ---> System.InvalidOperationException: Element is already the child of another element.  
        
               at MS.Internal.XcpImports.CheckHResult(UInt32 hr)  
        
               at MS.Internal.XcpImports.SetValue(INativeCoreTypeWrapper obj, DependencyProperty property, DependencyObject doh)  
        
               at MS.Internal.XcpImports.SetValue(INativeCoreTypeWrapper doh, DependencyProperty property, Object obj)  
        
               at System.Windows.DependencyObject.SetObjectValueToCore(DependencyProperty dp, Object value)  
        
               at System.Windows.DependencyObject.SetValueInternal(DependencyProperty dp, Object value, Boolean allowReadOnlySet, Boolean isSetByStyle, Boolean isSetByBuiltInStyle, PropertyInvalidationReason reason)  
        
               at System.Windows.DependencyObject.SetValueInternal(DependencyProperty dp, Object value)  
        
               at System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value)  
        
               at System.Windows.Controls.ContentControl.set_Content(Object value)  
        
               at Telerik.Windows.Controls.GridView.GridViewHeaderCell.SetHeaderText()  
        
               at Telerik.Windows.Controls.GridView.GridViewHeaderCell.OnApplyTemplate()  
        
               at System.Windows.FrameworkElement.OnApplyTemplate(IntPtr nativeTarget)  
        
               --- End of inner exception stack trace ---  
        
               at MS.Internal.XcpImports.MethodEx(IntPtr ptr, String name, CValue[] cvData)  
        
               at MS.Internal.XcpImports.MethodEx(DependencyObject obj, String name)  
        
               at MS.Internal.XcpImports.FrameworkElement_ApplyTemplate(FrameworkElement frameworkElement)  
        
               at System.Windows.FrameworkElement.ApplyTemplateInternal()  
        
               at System.Windows.Controls.Control.ApplyTemplate()  
        
               at Telerik.Windows.Controls.GridView.GridViewDataControl.<PopulateHeaderAndFooterRows>b__45(GridViewCellBase c)  
        
               at System.Collections.Generic.List`1.ForEach(Action`1 action)  
        
               at Telerik.Windows.Controls.GridView.GridViewDataControl.PopulateHeaderAndFooterRows()  
        
               at Telerik.Windows.Controls.GridView.GridViewDataControl.OnColumnsCollectionChanged(NotifyCollectionChangedEventArgs e)  
        
               at Telerik.Windows.Controls.GridViewColumnCollection.OnCollectionChanged(NotifyCollectionChangedEventArgs e)  
        
               at System.Collections.ObjectModel.ObservableCollection`1.InsertItem(Int32 index, T item)  
        
               at Telerik.Windows.Data.RadObservableCollection`1.InsertItem(Int32 index, T item)  
        
               at System.Collections.ObjectModel.Collection`1.Add(T item)  
        
               at Perquest.Payroll.Worksheet.Silverlight.TelerikWorksheetGrid._gridManager_WorksheetColumnsCreated(Object sender, WorksheetColumnsCreatedEventArgs e)}

answered on 30 Sep 2009, 11:56 AM

silverlightapplication2.zip

Hi,

I've tried this using both our latest internal build and our official service pack and everything worked fine. You can check the attached project.

Best wishes,
Vlad
the Telerik team

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