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moskie_work

09-14-2004 05:35 AM

[VB.Net] Creating a comma seperated value list with single quotes...

I am trying to go through all the parameters from a certain multi-select box of the request object and generate a CSV list with each value wrapped in a pair of single quotes. What I have is:

Code:

ChmclsCSV = ""



        For Each p In Request.Params.Keys

            If p = "sltChmcl" Then

                If ChmclsCSV.Length = 0 Then

                    ChmclsCSV = "'" & Request.Params(p).ToString() & "'"

                Else

                    ChmclsCSV = ChmclsCSV & " , '" & Request.Params(p).ToString() & "'"

                End If

            End If

        Next



        Trace.Write("Chemicals List:" & ChmclsCSV)

Trace gives me the output of:

Chemicals List:'100-01-6,100-41-4,100-42-5'

Those are the right values, but you can see that there should be more quotes between each of the values. Anyone know what's going on?

Boadah2

09-18-2004 11:00 AM

Code:

    Dim aStuff(20) As String

    Dim i As Int32

    Dim s As String

    Dim csv As String



    For i = 0 To 20

      aStuff(i) = Chr(65 + i)

    Next



    For Each s In aStuff

      If Len(csv) > 0 Then

        csv += "',"

      End If

      csv += "'" + s

    Next

    csv += "'"

Will give you:
'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U'

magua

09-18-2004 06:47 PM

Quote:

Originally Posted by moskie_work

I am trying to go through all the parameters from a certain multi-select box of the request object and generate a CSV list with each value wrapped in a pair of single quotes. What I have is:

Trace gives me the output of:

Chemicals List:'100-01-6,100-41-4,100-42-5'

Those are the right values, but you can see that there should be more quotes between each of the values. Anyone know what's going on?

Not having worked with a multiselect listbox in awhile, my guess is that all the values are already comma seperated, and are being returned in the single sltChmcl parameter. Thus, only the first part of the if/else is getting executed, and then only once. You could verify this by putting Trace statements inside each part of the if/else.

If correct, then you don't even need the for; you could simply have (vapor code; I come from C# land):

Code:

ChmclsCSV = "'" & Request("sltChmcl").Replace(",", "','") & "'"

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