I could really need some help on this!
I also get the famous error (when searching throu your website): Specified cast is not valid, on multiple controls when using Bind and clicking "Add new record".
But, what about the checkbox for example, do I really need to create a usercontrol for it (and for every other asp:control)?
And how do I bind the RadEditor control?
answered on 02 Sep 2008, 11:23 AM
To add checkboxes or other controls to the grid edit form, consider using FormTemplate custom edit form (as you already did), WebUserControl custom edit form or embed these editors inside edit templates of template columns.