private void clientesToolStripMenuItem_Click(object sender, EventArgs e) { var formClientes = new formClientes(); formClientes.MdiParent = this; formClientes.Show(); }
private void clientesToolStripMenuItem3_Click(object sender, EventArgs e) { if (formClientes == null) { formClientes = new formClientes(); formClientes.MdiParent = this; formClientes.Show(); } else if (formClientes.IsDisposed) { formClientes = new formClientes(); formClientes.MdiParent = this; formClientes.Show(); } else { formClientes.Activate(); } }