private void طلابToolStripMenuItem_Click(object sender, EventArgs e) { frm_add myform = new frm_add(); myform.MdiParent = this; myform.Show(); }
private void BtnAdd_Click(object sender, EventArgs e) { frm_add myform = new frm_add(); myform.MdiParent = this.MdiParent; myform.Show(); }