private void الحركاتالمخزنيهToolStripMenuItem_Click(object sender, EventArgs e) { if (inventory_movement == null) { inventory_movement = new inventory_movement(); inventory_movement.MdiParent = this; inventory_movement.FormClosed += new FormClosedEventHandler(inventory_movement_FormClosed); inventory_movement.Show(); } else { inventory_movement.Activate(); } }
void inventory_movement_FormClosed(object sender, FormClosedEventArgs e) { inventory_movement = null; //throw new NotImplementedException(); }