Question

Sorry if this is a dumb question. I don’t ever have to write anything in VB.NET.

But I am passing variables named “name” to a function and sometimes it may be 1 name or 2 names, etc. I want to check in the function if its only 1 name don’t add a comma, if it’s 2 names add a comma. Is there a way to get how many “names” there are?

EDIT: Added my ode to make my question a little more clear. sorry for not doing it before.

My Code:

Public Function GenerateCSV(byval str as string, byval str1 as string, byval str2 as string, byval GrpName as string) 
  IF GroupName <> GrpName THEN
    GroupName = GrpName
    CSVString = ""
  END IF
  IF str = ""
    CSVString = ""
  ELSE
    CSVString = CSVString & str & ", " & str1 & ", " & str2 & ", " 
  END IF
  return CSVString
End function

Thanks!

Answer 1

Pass them as a List or array. With these, you can get the number of items and do whatever processing you need to do.

Public Function DoSomething(names As IEnumerable(Of String)) As String
    'Include this if there is a possibility of an names containing nothing
    If names.Count = 0 Then
        Return ""
    End If

    Dim csvString As String = names(0)

    'First one is already added, loop through remaining
    For i As Integer = 1 To (names.Count - 1)
        csvString = csvString + ", " + names(i)
    Next

    Return csvString
End Function

You would preferably use IEnumerable which can take arrays or list among other things. You could use IList(Of String) or String() if you wanted though.