private void _backLogin(string msg)
{
Login login = new Login(msg);
login.Show();
this.Close();
}
protected void OnMenuItemUserSwitch(object sender, EventArgs e)
{
Login loginWindow = new Login("");
loginWindow.Show();
this.Close();
}
protected override void OnStartup(StartupEventArgs e)
{
base.OnStartup(e);
Login login= new Login();
login.Show();
}