超载

重载是在具有相同名称但不同参数类型的类中创建多个过程，实例构造函数或属性。

Class Person
    Overloads Sub Display(ByVal theChar As Char)
        ' Add code that displays Char data.
    End Sub

    Overloads Sub Display(ByVal theInteger As Integer)
        ' Add code that displays Integer data.
    End Sub

    Overloads Sub Display(ByVal theDouble As Double)
        ' Add code that displays Double data.
    End Sub
End Class