如何关闭MDI Child表单C＃

Question

How do you close a MDI Child form within that child MDI form using a RETURN button which will bring me back to the Parent Form? So far i have used the code:

if (ActiveMdiChild != null)                 
            ActiveMdiChild.Close(); 

But this doesn't work. I have tried numerous methods but nothing has worked so far Any help is much appreciated!!

Answer 1

why not use:

foreach (Form c in this.MdiChildren)
{
   c.Close();
}