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How to use modems with

P: n/a
I can't figure out what to use to be able to receive a file via a modem in

The requirement is that users can dial in and send an ascii file using a

Anyone know where I can find some sample code for this type of stuff?

In VB6 we could get 3rd party controls but I can't find anything similar in
the new environment.

Thanks for any help

Nov 21 '05 #1
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P: n/a

There are several ways, at least one free and some that cost money.

You can use XMCommCRC.ocx from my homepage (it works fine in .NET; I have
example code in my book). The file transfer protocols that are supported
are XMODEM/checksum and XMODEM/CRC. There may be other free solutions, but
I am not aware of them.

There are a number of commercial serial communications controls for .NET
that support file transfers (Sax Communications .NET for example, and others. Also, any ActiveX control that you used in VB6
still will work under .NET.


Richard Grier (Microsoft Visual Basic MVP)

See for contact information.

Author of Visual Basic Programmer's Guide to Serial Communications, 4th
Edition ISBN 1-890422-28-2 (391 pages) published July 2004. See to order.
Nov 21 '05 #2

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