I have two options to solve this problem:
Dim users_array() As String = users.Split(New String() {", "}, StringSplitOptions.RemoveEmptyEntries)
and:
Dim pass_array() As String = Split(users, ", ")
IMO, it is better to use ,<space>
as a separator string instead of just ,
, to avoid getting <space>staff
at index 1.
Here the first solution works for both C# and VB.Net and second one is specific to VB.Net.