在VB.Net中创建使用控件数组

首先创建一个Button类型控件数组：

1、创建“Windows应用程序”类型的工程，添加名为ButtonArray的类，并使该类继承 System.Collection.CollectionBase 类。System.Collections.CollectionBase类是.NET框架类库中为集合操作提供抽象的基类，通过对它的继承可以为我们的ButtonArray类具备集合增加、删除、索引的功能。

2、为ButtonArray类添加ParentForm属性，即控件组所在窗体，创建初始化函数（构造函数）；

3、为控件数组类增加AddItem方法，该方法在控件数组类中添加成员；

4、为控件数组类增加RemoveItem方法，该方法在控件数组中删除一个成员。

示例代码：

Public Class ButtonArray

    Inherits System.Collections.CollectionBase

    Private ReadOnly ParentForm As System.Windows.Forms.Form

    Public Sub New(ByVal pForm As System.Windows.Forms.Form)

        ParentForm = pForm

    End Sub

    Default Public ReadOnly Property Item(ByVal index As Integer) As System.Windows.Forms.Button

        Get

            Return Me.List.Item(index)   @# ButtonArray的List 属性从CollectionBase 继承

        End Get

    End Property

    Public Sub AddItem()

        Dim btnItem As New System.Windows.Forms.Button

        Me.List.Add(btnItem)

        ParentForm.Controls.Add(btnItem)                  @#向窗体中增加控件

        btnItem.Tag = Me.Count                            @#Count属性从CollectionBase 继承

        btnItem.Top = Me.Count * 30

        btnItem.Left = 200

        btnItem.Text = "Button" & Me.Count.ToString

        AddHandler btnItem.Click, AddressOf btnItem_Click @#绑定事件处理程序

    End Sub

    Public Sub AddItem(ByVal btnItem As System.Windows.Forms.Button)

        Me.List.Add(btnItem)
        AddHandler btnItem.Click, AddressOf btnItem_Click @#绑定事件处理程序

    End Sub
    Public Sub RemoveItem()

        If Me.Count > 0 Then

            ParentForm.Controls.Remove(Me(Me.Count - 1))

            Me.List.RemoveAt(Me.Count - 1)

        End If

    End Sub

    Public Sub btnItem_Click(ByVal sender As Object, ByVal e As System.EventArgs)

        @#在这里编写控件数组对点击事件的响应

        @#例如：

        MsgBox("点击：" & sender.GetType().ToString & CType(CType(sender, Button).Tag, String))

    End Sub

End Class

使用创建的控件数组

在Form1中放置两个按钮Button1、Button2，分别测试控件数组的增添、删除。

双击Form添加代码：

Public Class Form1

    Inherits System.Windows.Forms.Form

……Windows窗体设计器生成的代码……

    Dim Buttons As New ButtonArray(Me)

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

        Buttons.AddItem()

    End Sub

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click

        Buttons.RemoveItem()

    End Sub

End Class

其他的控件数组也可以用类似的方式来实现
例如 Label控件数组

LabelArray.vb代码如下：
Public Class LabelArray
    Inherits System.Collections.CollectionBase

    Private ReadOnly ParentForm As System.Windows.Forms.Form

    Public Sub New(ByVal pForm As System.Windows.Forms.Form)

        ParentForm = pForm

    End Sub

    Default Public ReadOnly Property Item(ByVal index As Integer) As System.Windows.Forms.Label

        Get

            Return Me.List.Item(index)   @# ButtonArray的List 属性从CollectionBase 继承

        End Get

    End Property

    Public Sub AddItem(ByVal btnItem As System.Windows.Forms.Label)

        Me.List.Add(btnItem)

        AddHandler btnItem.Click, AddressOf btnItem_Click @#绑定事件处理程序

    End Sub
   

    Public Sub btnItem_Click(ByVal sender As Object, ByVal e As System.EventArgs)

        @#在这里编写控件数组对点击事件的响应

        @#例如：

        MsgBox("点击：" & sender.GetType().ToString & CType(CType(sender, Label).Tag, String))

    End Sub
End Class