Trap Type-Mismatch Error - Resolved

[Phenglai]

Guys,

I am having a problem trapping an error and VB error handling is not helping me out at all.

I have the computer connected to a device located on the comm port. It is sending information back to the computer. Occasionally, the device sending data sends back garbage and the vb program crashes.

I have a sub that is basically like so

On Error Goto errHandler
 
Select Case Message
 
Case 'blah'
 
Case 'blah blah'
 
End Select
 
Exit Sub
 
errHandler:
  end sub

It all works fine until I get an extra charicter or a bit flips over the commport. I have a line in the Case statement that looks for certain values and then converts them to normal numbers so a person can read them

so I have this

IsNumeric(CInt("&H" & tempCommand))

If tempCommand comes in like "1E" then all is good
If it comes in like "1R", I get a type mismatch error.

Why wont this go to the errHandler?

Jerel