User control inside a datagrid cell is resetting

Hi,

  My scenario is i have a usercontrol inside a content presenter in a datagrid cell. The user control is such that it is curved at the edges. That means i can select the background of cell. When i do so its removing the control and the control is empty after that. i tried to handle it in BeginEdit method but couldnt. Any help will be greatly appreciated.

Regards

Harsha

Harsha Bhat