Ken,
You can assign a CellType as a Combobox in Grid using ''ItemTemplate'' for the ''GridColumnDescriptor''. please have a look at the attached sample. In this sample a column named "ComboxColumn" has cellType as DropDownlist by using Item template, you can also use this for EditItem template if you want the combobox while editing. See the ''BindingCombobox()'' method in the codebehind file from where the DropDownList gets its Data.
Forum46498.zip
[Sample ASPX Code]
Let me know if this solves your query.
Best Regards,
A.Sivakumar.
