Imports System
Imports System.Collections.Generic
Public Class Test
Public Shared Sub Main()
Dim hset1 = New HashSet(Of Integer)({1, 2, 3, 4, 5})
Dim hset2 = New HashSet(Of Integer)({3, 4, 1, 7})
hset1.SymmetricExceptWith(hset2)
For Each item As Integer In hset1
Console.Write("{0}{1}", item, " ")
Next
End Sub
End Class
' run:
'
' 7 2 5
'