Conveniently Remove a List of Items From Another List

Say you have two lists. You want to remove the items from the first list that already exist in a second list:

Dim listFirst As List(Of String) = New List(Of String)
Dim listSecond As List(Of String) = New List(Of String)

listFirst.Add("A")
listFirst.Add("B")
listFirst.Add("C")
listFirst.Add("D")
listFirst.Add("E")
listFirst.Add("F")

listSecond.Add("A")
listSecond.Add("D")
listSecond.Add("F")

Dim different As IEnumerable(Of String) = listFirst.Except(listSecond)
listFirst = different.ToList()

Result:

B
C
E