private void FillDataInGrid()
{
int position = Convert.ToInt32(ddlPosition.SelectedValue);
string status = ddlStatus.SelectedValue;
dt = banner_obj.GetListByPositionStatus(position, status);
GridView1.DataSource = dt;
GridView1.DataBind();
//GridViewRow FirstRow = GridView1.Rows[0];
//Button btnUp = (Button)FirstRow.FindControl("btnUp");
//btnUp.Enabled = false;
//GridViewRow LastRow = GridView1.Rows[GridView1.Rows.Count - 1];
//Button btnDown = (Button)LastRow.FindControl("btnDown");
//btnDown.Enabled = false;
}