Checking form status

[Sync]

Hello,

There are there forms [frmMain,frm1,frm2] in my application [vb.net].
How can I check one Form has been loaded or not from frmMain?

Any help would be appreciated.

[RobDog888]

One way is by using TypeName

If TypeName(frm1) <> "Nothing" Then
    MessageBox.Show("Loaded!")
Else
    MessageBox.Show("Not Loaded!")
End If

[Sync]

I can't. How should i do?:-(

[oupoi]

The simplest way to do this is using a static (shared) variable as flag.
Set it to false on default and turn it to true on the form load event.

[Sync]

Thanks.oupoi.
Actually, we can use global variable in module. I don't want to use like that.
Because, If we have many forms, we will need to declare many variable.I think it is not good for performance.
In V6, I think we can use "App.PrevInstance".