Login form is launched in WinForm, login form is automatically destroyed after login successful.

Login login= New Login ();
Login. ShowDialog ();
if (login. DialogResult = = DialogResult.OK)
{
Application.Run (New Mian ());
Login. Dispose ();
}
else if (login. DialogResult = = dialogresult.no)
{
Application.exit ();
}

When the program starts, the login object is created first, so that the login object is displayed in dialog form, and DialogResult is OK if the login succeeds. Then create the main form and release the Login object, if it is click the Close button. Then return DialogResult to No. Program End ...

Login form is launched in WinForm, login form is automatically destroyed after login successful.