how to protect the control in table cell for delete?

[chuqingsheng]

I have a control in table cell. I need the user cannt delete this control. how to ?

I don't find any protect for control.

[Sergey Tkachenko]

Assign non-zero value to rvepDeleteProtect property for this control's item.
When generating document, you can do it using Cell.SetItemExtraIntProperty method.