Cross-thread operation problem for RTF control when used in a thre

i tried the code you pasted here but i didnt get any error. anyways try
control.Invok() property to get the text. for that you have to define
one method on form that will return you the text. call that method
using control.Invok method. it should work. this is the only way i'm
telling you. by optimizing it you can get more accurate results.

To Lucky: You must not have been using VS 2005. Information in MSDN appears
to verify this behavior. Microsoft has added the Backgroundworke r control
to handle this situation.

I did more searching and found the following article:
ms-help://MS.VSCC.v80/MS.MSDN.v80/MS.VisualStudio .v80.en/dv_fxmclictl/html/138f38b6-1099-4fd5-910c-390b41cbad35.ht m

Below are two examples of code that solves my problem. One uses a delegate.
One uses the backgroundworke r control.

Private Sub Timer1_Tick(ByV al sender As System.Object, ByVal e As
System.EventArg s) Handles Timer1.Tick
Me.backgroundWo rker1.RunWorker Async()
End Sub

Private Sub backgroundWorke r1_RunWorkerCom pleted(ByVal sender As Object,
ByVal e As RunWorkerComple tedEventArgs) Handles
backgroundWorke r1.RunWorkerCom pleted
Dim s As String = Me.RichTextBox1 .Rtf
Debug.Print(s)
End Sub

=============== =============== =

Delegate Sub ReadRTFCallback ()

Private Sub setTextSafeBtn_ Click(ByVal sender As Object, ByVal e As
EventArgs) Handles setTextSafeBtn. Click
Me.demoThread = New Thread(New ThreadStart(Add ressOf
Me.ThreadProcSa fe))
Me.demoThread.S tart()
End Sub

Private Sub ThreadProcSafe( )
Me.ReadRTF()
End Sub
Private Sub ReadRTF()
If Me.RichTextBox1 .InvokeRequired Then
Dim d As New ReadRTFCallback (AddressOf ReadRTF)
Me.Invoke(d, New Object() {})
Else
Dim s As String = Me.RichTextBox1 .Rtf
Debug.Print(s)
End If
End Sub