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Hello,<br />
I have a vb program where I let the user enter a com port number that they will be using for an rs232 device.<br />
It works well.<br />
<br />
If I try to open a comport that I do not have<br />
(com port 4) it gives me an error that says<br />
&nbsp;invalid com port number.<br />
<br />
<br />
&nbsp; &nbsp;MSComm1.CommPort = myComPortNumber<br />
&nbsp; &nbsp;MSComm1.InputLen = 0<br />
&nbsp; &nbsp;MSComm1.Settings = &quot;9600,N,8,1&quot;<br />
&nbsp; &nbsp;MSComm1.PortOpen = True<br />
<br />
<br />
How do I test for this before the error happens?
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Hello,
I have a vb program where I let the user enter a com port number that they will be using for an rs232 device.
It works well.

If I try to open a comport that I do not have
(com port 4) it gives me an error that says
 invalid com port number.


   MSComm1.CommPort = myComPortNumber
   MSComm1.InputLen = 0
   MSComm1.Settings = "9600,N,8,1"
   MSComm1.PortOpen = True


How do I test for this before the error happens?

MSCOMM

Visual Basic is Microsoft’s event-driven programming language and integrated development environment (IDE) for its Component Object Model (COM) programming model. It is relatively easy to learn and use because of its graphical development features and BASIC heritage. It has been replaced with VB.NET, and is very similar to VBA (Visual Basic for Applications), the programming language for the Microsoft Office product line.