private void barButtonItem1_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
        {
            Purchase_Requst a = new Purchase_Requst(false, null);

            a.ShowDialog();
            Purchase_Requst_List_Load(sender, e);
        }
        private void gridView1_RowClick(object sender, DevExpress.XtraGrid.Views.Grid.RowClickEventArgs e)
        {
            System.Data.DataRow row = gridView1.GetDataRow(gridView1.FocusedRowHandle);
            String          no      = row["prNo"].ToString();
            Purchase_Requst req     = new Purchase_Requst(true, no);

            req.ShowDialog();
        }