.NET: Control Invoke() in Reflector

Posted by sheepsimulator on Stack Overflow See other posts from Stack Overflow or by sheepsimulator
Published on 2010-05-09T19:03:06Z Indexed on 2010/05/09 19:08 UTC
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So, I was getting back into some .NET programming, and through a new feature in VS.NET 2010, it detected a case where I was trying to modify a control from a thread that didn't create that control, and pointed me to an article on MSDN about how you do this correctly...

' HOW TO WRITE TO A FORM CONTROL FROM A THREAD THAT DIDN'T CREATE THE CONTROL
' ===========================================================================
' Say you need to write to a UI text box that logs stuff...
Delegate Sub WriteLogDelegate(ByVal [text] As String)
Private Sub WriteLog(ByVal [text] As String)
    If Me.rtfLog.InvokeRequired Then
        ' We are not in the same thread!
        ' Create new WriteLogDelegate and invoke it on the same thread
        Dim d As New WriteLogDelegate(AddressOf WriteLog)
        Me.rtfLog.Invoke(d, New Object() {[text]})
    Else
        ' We are totally in the same thread...
        ' Call AppendText like normal!
        Me.rtfLog.AppendText([text])
    End If
End Sub

AND I WAS SO EXCITED BECAUSE I HAVE BEEN PUZZLED BY HOW TO DO THIS FOR LIKE 5 YEARS BECAUSE PREVIOUS VERSIONS OF VS.NET DIDN'T FLAG THIS SINCE I WAS AN UNDERGRAD ON A PROJECT AND...

Umm... Sorry bout that. Composure regained. Anyway, now that I know this bit of .NET-fu, I'd like to learn more about what's going on and how it works.

Where can I find the code for Invoke() in .NET Reflector?

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