I have a combobox that is populated by a sqldatasource. I would like for the combobox to show..."Please select an item" or just have it blank, when the page loads. How do i accomplish this?
If you set the AllowCustomText property to true and the AppendDataBoundItems property to true as well you can get this behavior. This is how I implemented it:
As for having a combobox in a edit column of a grid I would suggest looking into this documentation article discussing column types (along with anything else you find relevant to your implementation in the documentation) as well as this grid demo.