VB.net Module

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于 2013-09-04 22:47:35 发布

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本文介绍如何创建和使用模块来组织代码。通过实例演示了如何在模块中定义公共变量及函数，并在应用程序中调用这些资源。适用于需要管理大量函数、子程序或变量的复杂应用。

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In this tutorial, we cover how to create a module, store information inside a module and then access that information in your application. A module can be used to store functions, subs or even variables to sort out your code so that you can access things more easily. If you have a sophisticated application where you have to store a lot of functions, subs or variables then it would be useful to sort them into different categories using modules. A module is differen t to a class because all of the members of a module are shared and a module does not have a consutrctor, meaning you can not create an instance of a module.

Module Code

Module functions

    Public bla As Integer = 10
    Public bla2 As Integer = 20

    Public Function addnumbers(ByVal number1 As Integer, ByVal number2 As Integer)
        Return number1 + number2
    End Function

End Module

Code

Public Class Form1

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        TextBox3.Text = addnumbers(bla, bla2)
    End Sub

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        MessageBox.Show(addnumbers(TextBox1.Text, TextBox2.Text))
        MessageBox.Show(functions.addnumbers(TextBox1.Text, TextBox2.Text))
    End Sub

End Class