private void newVehicleModelToolStripMenuItem_Click(object sender, EventArgs e)
{
frmAddVehicleModel form = new frmAddVehicleModel();
form.MdiParent = this;
form.Show();
}
private void btnAddModel_Click(object sender, EventArgs e)
{
frmAddVehicleModel frmModel = new frmAddVehicleModel();
frmModel.FormClosed += async delegate {
await GetModel();
};
frmModel.ShowDialog();
}