AutoGeneratingColumn event not working in Custom Control of Silverlight

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Silverlight

custom-controls

Hello Everyone,
I am new to Silverlight 4.0. I am creating a custom control using Telerik RadGridView for Silverlight. My aim is to do all the generic handling like formatting of cells, text alignment and so on, in the custom control. I don't want any end developer to code for such generic handling. To handle such logic I am using the AutoGeneratingColumn event of the RadGridView in which I am applying the text alignment for coulumns, headers etc.. The event gets fired in the custom control, but I don't see any changes in the Grid. It gives a default formatting of text alignment.
I am stuck in this for a week now, tried everything that I could on net, but couldn't get hold of anything.

A help in this would be well appreciated.

Thanks In Advance.