c# - Windows Forms: Change application mainwindow at runtime

Question

Normally I would do Application.Run(myMainForm).

But I want to do something like this:

MyForm1 f = new MyForm1();
f.Close+=OnOpenOverviewWin();
Application.Run(f);

void OnOpenOverviewWin()
{
MyOverViewForm f = new MyOverViewForm ();
Application.Run(f); // i want to do this
Application.NewMainWindow = f; // or something like that
}

Answer 1

Set the Application.ShutdownMode property to ShutdownMode.OnLastWindowClose

MyForm1 f = new MyForm1();
f.Close += OnOpenOverviewWin();
Application.ShutdownMode = ShutdownMode.OnLastWindowClose;
Application.Run(f);

void OnOpenOverviewWin()
{
  MyOverViewForm f = new MyOverViewForm ();
  f.Show();
}