Hi,
You can use server side code to set the drop down items. You would get the drop down with code like this:
Code: C#
//Get the custom column. This code assumes the first column is custom column
EO.Web.CustomColumn column = (EO.Web.CustomColumn)Grid1.Columns[0];
//Get the drop down control
DropDownList dropDown =
(DropDownList)column.EditorInstance.FindControl("DropDown1");
//Now you can fill in the drop down items
....
You can NOT use server side code to get the drop down's selected value. This is because all cells in the column shares a single drop down, so drop down's selected value has no meaning. Instead when you select an item from the drop down, the selected value is passed to the grid and associated to the grid cell that you were editing. You would then get the value from the grid cell. See here for more information about how a CustomColumn interacts with controls inside its editor template:
http://www.essentialobjects.com/doc/1/grid/custom_column.aspxHope this helps. Please feel free to let us know if you have any more questions.
Thanks!