i have already defined accountdrop dropdown list. I want to add this to custom column of grid.
Empty dropdown is displaying when i write code like this:

<eo:CustomColumn HeaderText="DimMember" Name="Member" ClientSideEndEdit="on_end_edit">
<EditorTemplate>
<asp:DropDownList ID="AccountDrop" runat="server" Width="150px" >
</asp:DropDownList>
</EditorTemplate>
</eo:CustomColumn>

here is my code:

EO.Web.CustomColumn col = (EO.Web.CustomColumn)EntryGrid.Columns[2];

DropDownList DDL = (DropDownList)col.EditorInstance.FindControl("SelectMember");

DDL = AccountDrop; //AccountDrop is an already defined dropdown list


in the output I am getting empty dropdown list. please help me on this.

Thank you very much. I followed as you suggested and it worked and displaying data in Dropdown list. But now I am getting below error even I am selecting the value in the dropdown list.

Microsoft JScript runtime error: Object required

My JavaScript

function on_begin_edit(cell)
{
//Get the current cell value
var v = cell.getValue();

//Use index 0 if there is no value
if (v == null)
v = 0;

//Load the value into our drop down box
var dropDownBox = document.getElementById("id");
dropDownBox.value = v;
}
function on_end_edit(cell)
{
//Get the new value from the drop down box
var dropDownBox = document.getElementById("id");
var v = dropDownBox.value;


//Return the new value to the grid
return v;
}


C# Code:

EO.Web.CustomColumn col = (EO.Web.CustomColumn)EntryGrid.Columns[2];

DropDownList DDL = (DropDownList)col.EditorInstance.FindControl("SelectMember");

string id = DDL.ClientID;


ASPX CODE:

<eo:CustomColumn HeaderText="DimMember" ClientSideEndEdit="on_end_edit">
<EditorTemplate>
<asp:DropDownList ID="SelectMember" runat="server" Width="150px">
</asp:DropDownList>
</EditorTemplate>
</eo:CustomColumn>

Please help me on this..