如何在 vb.net 为动态生成的控件添加事件并传递数据

'把图片的声明放在外面，类里面过程外面，而且要用As，不然等会儿没法用

Dim myPicture As New System.Windows.Forms.PictureBox()

'动态生成的控件，加一行

Private Sub UserControl1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load

Me.Panel3.Controls.Add(myPicture)

myPicture.Size =New System.Drawing.Size(115, 160)

myPicture.TabStop =False

myPicture.Name ="p"

myPicture.Cursor = Cursors.Hand

AddHandler myPicture.Click, AddressOf mypic_Click '添加事件

AddHandler returnid, AddressOf idReturned '绑定事件和过程

End Sub

'再来个事件，放在声明的地方，就是类里面、过程外面皮昌激

Private Event returnid(ByVal id As String) '这个事件可以传递值哦~

'普通的单击事件

Private Sub mypic_Click()

RaiseEvent returnid(myPicture.Name)

End Sub

'会传值的事件过程

Private Sub idReturned(ByVal id As String)

Dim bookInfo As New BookInfo

bookInfo.Show()

Me.Parent.Enabled = False

'用id变量做点什么吧

End Sub

如果要改事件的签名（参数一类的）的话，得重写控件。你可以这燃袜样自己弄一个事件迅衫。

Option Explicit

'添闭肆咐加事件轿纯

Private WithEvents cmd As CommandButton

Private Sub Form_Load()

Set cmd = Controls.Add("VB.CommandButton", "雹芦cmd")

cmd.Visible = True

End Sub

动态生成的控件：卜斗

Private Sub UserControl1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load

                Dim myPicture = New System.Windows.Forms.PictureBox()

                Me.Panel3.Controls.Add(myPicture)

                myPicture.Size = New System.Drawing.Size(115, 160)

                myPicture.TabStop = False

                myPicture.Name = 型念磨"p" 

                myPicture.Cursor = Cursors.Hand

                AddHandler myPicture.Click, AddressOf mypic_Click '添加事件

    End Sub

 

处理事件的过程：

Private Sub mypic_Click() 'ByVal id As String

      高绝  Dim bookInfo As New BookInfo

        bookInfo.Show()

        Me.Parent.Enabled = False

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