vb.net - 将多播委托添加到 VB.NET 程序

Question

对于一个作业，我应该编写一个程序，使用委托同时完成所有四个基本数学函数。我做到了。这是其中的代码。

Module Module1
    Public Delegate Sub math(ByVal A As Integer, ByVal B As Integer)
    Dim A, B, C As Integer
    Sub Main()
        Console.WriteLine("Please enter a number")
        A = Int32.Parse(Console.ReadLine())
        Console.WriteLine("Please enter another number")
        B = Int32.Parse(Console.ReadLine())
        Dim objmath As New math(AddressOf add)
        objmath(A, B)
        add(A, B)
        objmath = New math(AddressOf multiply)
        objmath(A, B)
        multiply(A, B)
        objmath = New math(AddressOf subtract)
        subtract(A, B)
        subtract(A, B)
        objmath = New math(AddressOf divide)
        divide(A, B)
        divide(A, B)
        Console.ReadKey()
    End Sub
    Sub add(ByVal A As Integer, ByVal B As Integer)
        C = A + B
        Console.WriteLine(C)
    End Sub
    Sub multiply(ByVal A As Integer, ByVal B As Integer)
        C = A * B
        Console.WriteLine(C)
    End Sub
    Sub subtract(ByVal A As Integer, ByVal B As Integer)
        C = A - B
        Console.WriteLine(C)
    End Sub
    Sub divide(ByVal A As Integer, ByVal B As Integer)
        C = A / B
        Console.WriteLine(C)
    End Sub
End Module

现在，我被要求向该程序添加一个多播委托，该委托包含所有四个过程并使用 DynamicInvoke() 方法调用这些过程。在我的程序中如何以及在何处添加它？