Question

This has to be an easy question, but I cannot figure out how to create a list of names separated by commas without having a trailing comma at the end.

So here is my code…

    For Each u In users
        userList.Append(u.FirstName)
        userList.Append(" ")
        userList.Append(u.LastName)
        userList.Append(", ")
    Next

This creates a list, but it always looks likes this:

James Smith, Chris Williams, Zoey Babcock,

How do I get generate a list without an extra comma at the end?

Thanks

Here is the working code thanks to all the help:

    Dim fullNames = (users.Select(Function(u) u.FirstName + " " + u.LastName))
    Dim userList As String = String.Join(", ", fullNames)

Answer 1

You can use LINQ to project each user into a collection of full names, then use String.Join() to join them using a separator of your choice.

List(Of String) fullNames = From u _
                            In users _
                            Select (u.FirstName + " " + u.LastName)
String userList = String.Join(", ", fullNames)

You can express the LINQ query like this as well. It is identical to the above:

List(Of String) fullNames = _
                users.Select(Function(u) u.FirstName + " " + u.LastName)
String userList = String.Join(", ", fullNames)