private void barNew_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
        {
            frmBookPurchase frmObj = new frmBookPurchase();

            frmObj.FormClosed += frmObj_FormClosed;
            frmObj.MdiParent   = frmMain.ActiveForm;
            frmObj.Show();
        }
        private void gridControl1_DoubleClick(object sender, EventArgs e)
        {
            DataRow dr = gridView1.GetFocusedDataRow();

            if (dr == null)
            {
                return;
            }
            if (para != null)
            {
                returnRow = dr;
                Close();
                return;
            }
            frmBookPurchase frmObj = new frmBookPurchase(new object[] { dr["PURCHASEID"] });

            frmObj.FormClosed += frmObj_FormClosed;
            frmObj.MdiParent   = frmMain.ActiveForm;
            frmObj.Show();
        }