Hi,
try this.
1. In order to solve this problem, generate a new “page” class that inherits System.Web.UI.Page and overrides VerifyRenderingInServerForm to do nothing:
public class PageOverride : System.Web.UI.Page
{
public override void VerifyRenderingInServerForm(System.Web.UI.Control control)
{
}
}
2. When creating your Page holder, use the new page (PageOverride) instead of Page in your rendering:
Page pageHolder = new ctlUserControl.PageOverride();