silverlight dynamic datagrid silverlight-toolkit expander

Expander in DataGrid (Silverlight)

I have a DataGrid and I need to add an Expander control dynamically to group few rows based on some conditions... Can anyone help me in this... I am completely new to Silverlight :(

Solution

Found the answer, I have created a separate column for the expander and managed to display it when my condition is satisfied. It is not dynamic though, but solved the purpose. :)

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