C # Implementing cases of Closing child windows and closing parent windows

The following small series for everyone to bring a C # implementation child window close the parent window is also closed a simple instance. Small series feel very good, now share to everyone, also for everyone to make a reference. Let's take a look at it with a little knitting.

is actually the problem of inter-window communication, open Form2 on Form1, Form2 close Form1

Implementation method:

To declare an event in the child window Form2:

public delegate void Childclose ();  public event Childclose Closefather;  This event is then triggered in its Shutdown event:   private void Form2_closed (object sender, System.EventArgs e)   {    //use event to close the main window    Closefather ();   }

In the parent window Form1 (such as in the login window):

Then pop up the sub-Form2 form where this is written:

  Form2 ff=new Form2 ();  Ff.closefather+=new Childclose (this.closethis); Closethis () is a method ff in the parent form  . Show ();   public void Closethis ()   {this     . Close ();   }