Question

I need to build a comma-delimited string from an array.

For i=0 to ubound(arr)
    str+= arr(i) & ","
Next i

The trouble is that I end up with an extra comma at the end.

My current method for removing the comma is:

If str<>"" then
    Left(str, Len(str) - 1)
End if

But it seems pretty untidy, and non-generic. I have to do this so often, it’s become a pain. Anyone got a better one?

Answer 1

You can use String.Join. Refer to the documentation here: http://msdn.microsoft.com/en-us/library/dd988350.aspx

Sample code:

Dim values() As Object = {"Cobb", 4189, 11434, .366 }
Console.WriteLine(String.Join(",", values))
' The example displays the following output:
'      Cobb,4189,11434,0.366