GridView throws design time error after solution is upgraded to VS2010

[Eric]

I have a gridview in a window that displays/loads fine, in design view, for a VS 2008 solution.  i have upgraded the solution to VS 2010 and now receive the error below when in design view (still runs without error, just design time error).

System.NullReferenceException

Object reference not set to an instance of an object.

at Telerik.Windows.Controls.GridView.GridViewItemsControl.DisconnectFromDataEvents() in c:\Builds\WPF_Scrum\X1_Q1_2009\Sources\Development\WPF\GridView\GridView\GridViewItemsControl.cs:line 824 at Telerik.Windows.Controls.GridView.GridViewItemsControl.GridViewItemsControl_Loaded(Object sender, RoutedEventArgs e) in c:\Builds\WPF_Scrum\X1_Q1_2009\Sources\Development\WPF\GridView\GridView\GridViewItemsControl.cs:line 548 at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs) at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised) at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args) at System.Windows.UIElement.RaiseEvent(RoutedEventArgs e) at System.Windows.BroadcastEventHelper.BroadcastEvent(DependencyObject root, RoutedEvent routedEvent) at System.Windows.BroadcastEventHelper.BroadcastLoadedEvent(Object root) at MS.Internal.LoadedOrUnloadedOperation.DoWork() at System.Windows.Media.MediaContext.FireLoadedPendingCallbacks() at System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks() at System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget) at System.Windows.Media.MediaContext.AnimatedRenderMessageHandler(Object resizedCompositionTarget) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs) at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)

[Vlad]

Hi,

According to the the stack trace this is very old version of RadGridView - Q1 2009. Can you upgrade to the latest binaries (Q1 2010 Sp1)?

Kind regards,
Vlad
the Telerik team

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[Eric]

I have upgraded the binaries and I now receive the following build error.  Did this property name change?

Error 1 The property 'ColumnsWidthMode' does not exist in XML namespace 'clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.GridView'. Line 21 Position 54. C:\_Trunk\PrintClient\tags\1.0.0 (EDW 7.4.2 Release)\Code\PrintEnablementClient\WindowNotebookManagement.xaml 21 54 PrintEnablementClient

[Eric]

There are others that can't be resolved as well.

MultipleSelect

For a GridViewDataColumn:

HeaderText

[Milan]

Hello Eric,

ColumnWidthsMode is now called ColumnWidth, MultipleSelect = true should be transformed to SelectionMode=Extended and HeaderText is now called simply Header.

Hope this helps.

Sincerely yours,
Milan
the Telerik team

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