VB.NET Invoke Method

Question

I have this method in my code: ``` Private Sub Display() Received.AppendText(" - " & RXArray) End Sub ``` Whats the difference between this 2 calls: ``` Me.Invoke(New MethodInvoker(AddressOf Display)) ``` AND ``` Display() ``` I know that is something about threading, but I'm not sure. Thanks in advance

Accepted Answer

Use the `Invoke` way when you're working in different threads. For example if the caller is not in the same thread as the GUI.

If the caller doesn't need to wait for the result of the method, you could even use `BeginInvoke`:

```
GuiObject.BeginInvoke(New MethodInvoker(AddressOf Display))
```

Or shorter:

```
GuiObject.BeginInvoke(Sub() Display)
```

For more ease of writing you could move the invoking into the `Display` function:

```
Private Sub Display()
    If Me.InvokeRequired Then
        Me.Invoke(Sub() Display)
        Return
    End IF
    Received.AppendText(" - " & RXArray)
End Sub
```

That way the caller doesn't have to know whether he is in the same thread or not.

VB.NET Invoke Method

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