' Visual Basic 2008 9.0 .NET Examples - Methods and Arguments - Procedures and Functions : 
Module Example4
    Sub Main()
        ShowSum(1)       ' value1 = 1 | value2 = 2 | value3 = 3            ' (1)
        ShowSum(2, 3)    ' value1 = 2 | value2 = 3 | value3 = 3            ' (1)
        ShowSum(4, , 5)  ' value1 = 4 | value2 = 2 | value3 = 5            ' (1)
        ShowSum(6, 7, 8) ' value1 = 6 | value2 = 7 | value3 = 8            ' (1)
        '
        ShowSum(value1:=1)                                                 ' (2)
        ShowSum(value1:=2, value2:=3)                                      ' (2)
        ShowSum(value1:=4, value3:=5)                                      ' (2)
        ShowSum(value1:=6, value2:=7, value3:=8)                           ' (2)
        '
        ShowSum(value3:=5, value1:=4)                                      ' (3)
        ShowSum(value3:=8, value2:=7, value1:=6)                           ' (3)
        '
        ShowSum(4, value3:=5)                                              ' (4)
        '
        Console.ReadLine()
    End Sub
    Sub ShowSum(ByVal value1 As Integer, _
                Optional ByVal value2 As Integer = 2, _
                Optional ByVal value3 As Integer = 3)
        Console.WriteLine(value1 + value2 + value3)
    End Sub
End Module
' Visit www.studyvb.com for more examples.  Copyright 2003-2008 De Wolf.