🚀 go-pugleaf

On 24 Oct 2005 09:03:04 -0700, Peter Jone wrote:

> Hi,
> 
> I have 2 WinForms for my MDI app. One is ParentForm; another is 
> ChildForm. Below is part of my code in the ParentForm. What I 
> am trying to do is that after clicking NewChild menu item, 
> check if any Child instance is created. If so, bring the 
> existing Child to front. If not, create a new Child instance. 
> But the problem is when I click Close menu item to close the 
> Child, it is never closed. 

How about:

> //Event when click the NewChild Menu item
> private void miNewChild_Click(object sender, System.EventArgs e)
> {
>   frmChild objfrmChild = GetfrmChildInstance();
>   objfrmChild.BringToFront();
> }

> //Check if any Child instance is created
> public frmChild GetfrmChildInstance()
> {
>   if (this.g_objfrmChild == null)
>   {
>     //if not created yet, Create an instance
>     this.g_objfrmChild = new frmChild();
>     this.g_objfrmChild.MdiParent = this;
>     this.g_objfrmChild.Show();
>   }
> 
>   return this.g_objfrmChild;
> }

You should probably avoid the global variable and just use the
MdiChildren and ActiveMdiChild property of the form, i.e. just use
  ActiveMdiChild.Close();

-- 
Marc Rohloff [TeamB]
marc rohloff -at- myrealbox -dot- com