>>Were you able to get template columns to work with "regular" .NET controls?
>>
>
>No.
What are you doing exactly here?
The Web Controls for databinding are not really made for running as children inside of the Datagrid and perform their internal binding. Binding in the data grid works completely different than binding does out side of it, so if you need to do any data binding in custom templates you'll need to rely on the stock DataGrid/Control behaviors of any controls you use (which will work fine with the mm controls).
FWIW, I personally think it's bad form to edit data in place in a grid and it's much cleaner to use separate forms or subforms on the same page for this rather than trying to shoehorn the editing into the grid itself. When this is done you have much more control over the process than you have inside of the datagrid itself and you can then more easily use mm's Databinding features. I reallize this might not address your needs exactly but it's something to consider.
Regards,