private void barButtonItem7_ItemClick(object sender, ItemClickEventArgs e) { frmPL f = new frmPL(); if (ExistForm(f)) { return; } f.MdiParent = this; f.Show(); }
private void btnPhanLop_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e) { frmPL f = new frmPL(); if (ExistForm(f)) { return; } f.MdiParent = this; f.Show(); }