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Request.Form("whatever").Count equivalent in VB.Net ?

Posted on 2007-07-26
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I expect this will be easy for the experts to answer, but it's not so easy for a beginner like me to work it out.  How can I duplicate this VBScript line:

  If Request.Form("whatever").Count = 1 Then

in VB.Net?  VB.Net doesn't like this, because Request.Form now seems to return a String (or could it be an array of strings), instead of a collection.
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Question by:LeeDerbyshire
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Expert Comment

by:Bob Learned
ID: 19574658
Try this:

If Not Request.Form("name") Is Nothing Then

End If

Bob
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Author Comment

by:LeeDerbyshire
ID: 19574725
Hi Bob, thanks for the reply.  I'd discovered the test for Nothing, but I need to know if exactly 1 form value with that particular name has been passed.  IsNothing will tell me if any values are passed or not, but I need to know the actual number, if possible.
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Accepted Solution

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Bob Learned earned 2000 total points
ID: 19574881
Look at these values:

    For Each key As String In Request.Form.AllKeys
      Dim value As String = Request.Form(key)
    Next

Bob
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Author Comment

by:LeeDerbyshire
ID: 19575194
Thanks, I can use that to show me what was input.  The problem is, though, I have a common form reading routine in an include file that checks form input from various sources (it checks for extended characters, and changes everything to UTF-8, rather than local 8-bit characters), so I never use Request.Form("name") throughout the application, I pass the name to my own routine.  One of the things it needs to know is how many instances of 'name' were returned (which is why I previously used .Count).  The form page could have had several controls with the same name on, in which case the values can easily be retrieved from the collection, but in VB.Net, you seem to get a single string with commas in.  But what if one of the inputs actually contained a comma?  Perhaps this is just one of the things I can no longer do?
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LVL 31

Author Comment

by:LeeDerbyshire
ID: 19575395
Got it - I can use the upper bound of the array returned here:

http://support.microsoft.com/kb/312558

The points are yours - I have unlimited points.
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