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Problem with WaitForString in VB.NET

Problem with WaitForString in VB.NET

Problem with WaitForString in VB.NET

(OP)
Hi All,

I have a program that works fine in VB 6.0 using Attachmate KEA. I am now trying to convert it to VB.NET and to work with Attachmate EXTRA.

Here is the code for the waitforstring function (not in its entirety):

VB 6.0 Version

    Set Sess = sessns.Item(scrnLocation)
    Set Screen_Object = Sess.Screen
    Set waitforstringobject = Screen_Object.WaitForString("Please Enter:")
    Do While waitforstringobject <> "Please Enter:"
    Loop

VB.NET Version

        extraSess = extraSessns.Item(scrnLocation)
        extraScreen = extraSess.Screen
        waitforstringobject = extraScreen.WaitForString("Please Enter:")
        Do While waitforstringobject Is Nothing
        Loop

Yes, I have created an EXTRA object.

The problem is that I am getting this error when it gets to the waitforstring command:

An unhandled exception of type 'System.InvalidCastException' occurred in Project1.exe
Additional information: Specified cast is not valid.

Also, I can't seem to get WaitForString to actually wait unless i put in a loop after it (as above). Anyone else curious about this?

The VB 6.0 code works fine. Any ideas?

Thanks,
Michael.

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