Comma “izing” a list of items

Question

Given a list of strings, what is the best method for concatenating these strings into a comma separated list with no comma at the end. (VB.NET or C#) (Using either StringBuilder

Answer 1

Dim strResult As String = ""
Dim separator = ","
Dim lstItems As New List(Of String)
lstItems.Add("Hello")
lstItems.Add("World")
For Each strItem As String In lstItems
     strResult = String.Concat(strResult, separator)
Next
strResult = strResult.TrimEnd(separator.ToCharArray())
MessageBox.Show(strResult)

The idea is to use String.TrimEnd() function