ShowDialiog not working

I am receiving data from a socket, which is on its own thread, it handles everything, and then passes the data to a routine on the main form, which calls ShowDialog(Me) when the first byte of data arrives. THe problem is, the ShowDialog, doesnt work. Its acting like i just used Show instead of ShowDialog, i can still work the form behind it just fine, which is bad. Is there anyway i can fix this??

Thats because the two forms are displayed on separate threads. Create a subroutine that creates and displays the form using ShowDialog, and then do some cross-thread calls to invoke this method on the main thread. If you do not know how to perform cross-thread calls, take a look at this CodeBank submission by jmcilhinney.

Thanks Athiest, after reading and a bit of googling, i figured out the problem. I was already passing the tcp events to the main thread, so i THOUGHT.

The problem code was:

Code:

---

If frmMain.InvokeRequired Then
  frmMain.Invoke MySub
else
  frmMain.MySub
End if

---

Which, apparently because it was on its own thread, it was creating a new class of frmMain, which didnt require an invoke. I fixed it with the following code

Code:

---

Dim MainFrm As frmMain = CType(Application.OpenForms(0), frmMain)
If MainFrm.InvokeRequired Then
  MainFrm.Invoke MySub
else
  MainFrm.MySub
End if

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