Kendo Telerik Grid View Drop Down Box, Tried and Tested code.... for grid view Drop Down box
column =>
{
column.Bound(e => e.CountryID).ClientTemplate(
@Html.DropDownListFor(model => model.CountryID, new SelectList(ViewBag.Country,"text","value"), "--- Select ---", new { @class = "form-control dropdownErp", @id = "inputSelect" }).ToString()).Title("Country Name");
}