扫二维码与项目经理沟通
我们在微信上24小时期待你的声音
解答本文疑问/技术咨询/运营咨询/技术建议/互联网交流
动态生成的控件:
我们提供的服务有:网站设计、网站制作、微信公众号开发、网站优化、网站认证、朝阳县ssl等。为上1000家企事业单位解决了网站和推广的问题。提供周到的售前咨询和贴心的售后服务,是有科学管理、有技术的朝阳县网站制作公司
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 = "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
Dim bookInfo As New BookInfo
bookInfo.Show()
Me.Parent.Enabled = False
'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
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。你可以这样自己弄一个事件。
两种方法:
1. 用WithEvents声明变量,这样你就可以像对待拖上去的控件一样操作:
Public Class Form3
WithEvents btn As New Button
Private Sub Form3_Load(sender As Object, e As EventArgs) Handles Me.Load
Controls.Add(btn)
End Sub
Private Sub btn_Click(sender As Object, e As EventArgs) Handles btn.Click
MsgBox(Now)
End Sub
End Class
2. 使用AddHandler 语句:
Public Class Form3
Private Sub Form3_Load(sender As Object, e As EventArgs) Handles Me.Load
Dim btn As New Button
AddHandler btn.Click, AddressOf btn_Click
Controls.Add(btn)
End Sub
Private Sub btn_Click(sender As Object, e As EventArgs)
MsgBox(Now)
End Sub
End Class
WithEvents (Visual Basic):
AddHandler 语句:
我们在微信上24小时期待你的声音
解答本文疑问/技术咨询/运营咨询/技术建议/互联网交流