Assigning x:Name to Thickness throws exception

Assigning x:Name to Thickness throws exception

Can anyone explain why this throws an exception?

<UserControl>     <Grid>         <Grid.Margin>             <Thickness x:Name="thickness" />         </Grid.Margin>     </Grid> </UserControl> 

If I remove the x:Name attribute, then it runs successfully.

Error details:

Message: Unhandled Error in Silverlight Application Code: 4004
Category: ManagedRuntimeError
Message: System.NullReferenceException: Object reference not set to an instance of an object. at SilverlightBindingTest.MainPage.InitializeComponent() at SilverlightBindingTest.MainPage..ctor() at SilverlightBindingTest.App.Application_Startup(Object sender, StartupEventArgs e) at MS.Internal.CoreInvokeHandler.InvokeEventHandler(UInt32 typeIndex, Delegate handlerDelegate, Object sender, Object args) at MS.Internal.JoltHelper.FireEvent(IntPtr unmanagedObj, IntPtr unmanagedObjArgs, Int32 argsTypeIndex, Int32 actualArgsTypeIndex, String eventName, UInt32 flags)

Answers & Comments...

Answer: 1

The Name attribute is a DependencyObject and as such can only be set on another DependencyObject.

Thickness is not a DependencyObject, so you cannot use the Name attribute.

by : TriggerPinhttp://stackoverflow.com/users/1549726

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