DropDownList box in gridvew edit mode

protected void grdDevelopment_RowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        DropDownList drpBuildServers;

        drpBuildServers = e.Row.FindControl("ddlBuildServers") as DropDownList;

        if (drpBuildServers != null)
            // Write your code here            
    }
}