private void menuStrip1_ItemClicked(object sender, EventArgs e) { if (frmInventory == null) { frmInventory = new frm_inventory(); frmInventory.MdiParent = this; frmInventory.FormClosed += FrmInventory_FormClosed; frmInventory.Show(); } else { frmInventory.Activate(); } }
private void FrmInventory_FormClosed(object sender, FormClosedEventArgs e) { frmInventory = null; //throw new NotImplementedException(); }