نحوه ست کردن Datasource به Dropdownlist در داخل گرید ویو

کد:

private void grdCoboFill()

{

    DataTable dt = new DataTable();

    dt.Columns.Add("ColorID", typeof(int));

    dt.Columns.Add("ColorName", typeof(String));



    dt.Rows.Add(new Object[] { 1, "RED" });

    dt.Rows.Add(new Object[] { 2, "GREEN" });

    dt.Rows.Add(new Object[] { 3, "BLUE" });



    foreach (GridViewRow row in this.GridView1.Rows)

    {

        ((DropDownList)row.FindControl("DropDownList1")).DataSource = dt;

        ((DropDownList)row.FindControl("DropDownList1")).DataValueField = "ColorID";

        ((DropDownList)row.FindControl("DropDownList1")).DataTextField = "ColorName";

        ((DropDownList)row.FindControl("DropDownList1")).DataBind();

    }

}