Vb.net 如何将按钮1从UserControl1导入Form1
我试过了,但没用 我还尝试了这个Vb.net 如何将按钮1从UserControl1导入Form1,vb.net,Vb.net,我试过了,但没用 我还尝试了这个按钮1。单击开始页面(UserControl1)输入到表单1 我的代码: Private Sub Button1_Click(sender As Object, e As PaintEventArgs) Handles Startpage.Button1.Click End Sub 我认为这是最不可取的选择: Private WithEvents StartpageButton1 As Button Private Sub Form1_Load(sender
按钮1。单击开始页面(UserControl1)
输入到表单1
我的代码:
Private Sub Button1_Click(sender As Object, e As PaintEventArgs) Handles Startpage.Button1.Click
End Sub
我认为这是最不可取的选择:
Private WithEvents StartpageButton1 As Button
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
StartpageButton1 = Startpage.Button1
End Sub
Private Sub StartpageButton1_Click(sender As Object, e As EventArgs) Handles StartpageButton1.Click
'...
End Sub
我认为这是一个更好的选择:
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
AddHandler Startpage.Button1, AddressOf StartpageButton1
End Sub
Private Sub StartpageButton1_Click(sender As Object, e As EventArgs)
'...
End Sub
Private Sub Form1_FormClosing(sender As Object, e As CancelEventArgs) Handles MyBase.FormClosing
RemoveHandler Startpage.Button1, AddressOf StartpageButton1
End Sub
我认为这是最好的选择:
Public Event Button1Click As EventHandler
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
RaiseEvent Button1Click(Me, EventArgs.Empty)
End Sub
该部分将进入用户控件,然后以以下形式进入:
Private Sub Startpage_Button1Click(sender As Object, e As EventArgs) Handles Startpage.Button1Click
'...
End Sub
没有“进口”。在Handles
子句中唯一可以包含的是声明为with events
的字段的事件。如果没有这样的字段,则必须使用AddHandler
注册事件处理程序。请注意,如果愿意,您可以声明自己的字段并将按钮指定给它,但这样做相当棘手。也就是说,正确的方法是用户控件处理自己的按钮的事件,然后引发表单可以处理的自己的事件。