I have a custom composite control inherited from WebControl. It basically renders a div and some tables. If I drop one into the ItemTemplate of a datagrid, I get this error in the designer when the datagrid tries to render: "There was an error rendering the control. Check to make sure all properties are valid." I can't figure out what I'm doing in my control that makes it so I can't place it within a datagrid. Any ideas?
Mike

Did you still try running it? I just developed a custom column for DataGrid and at design view I get the same error message but despite that when running the Page it works like a charm.

If it doesn't work, provide some more details like code etc.

Yep, I tried running it, but the entire grid fails to render anything. Mine isn't a custom column, but just a custom composite control. If this thread isn't far enough down to be ignored, does anyone else have ideas? :)
Mike

OK, could you then show a bit of code how you have implemented it? It helps to help you.