我在运行时向我的表单添加了一些控件,我需要它们在单击时调用一个函数。我不知道会添加多少控件,但它们都需要运行相同的功能。我将如何定义事件?我可以根据给定类的所有控件定义事件吗?
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22115 次
2 回答
7
一个简单的例子:
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
' creating control
Dim btn1 As Button = New Button()
Dim btn2 As Button = New Button()
btn1.Parent = Me
btn1.Name = "btn1"
btn1.Top = 10
btn1.Text = "Btn1"
btn2.Parent = Me
btn2.Name = "btn2"
btn2.Top = 50
btn2.Text = "Btn2"
'adding handler for click event
AddHandler btn1.Click, AddressOf HandleDynamicButtonClick
AddHandler btn2.Click, AddressOf HandleDynamicButtonClick
End Sub
Private Sub HandleDynamicButtonClick(ByVal sender As Object, ByVal e As EventArgs)
Dim btn As Button = DirectCast(sender, Button)
If btn.Name = "btn1" Then
MessageBox.Show("Btn1 clicked")
ElseIf btn.Name = "btn2" Then
MessageBox.Show("Btn2 Clicked")
End If
End Sub
End Class
于 2013-02-19T01:58:43.113 回答
2
简单地:
AddHandler Control.Event, AddressOf MethodExecuting
例如:
AddHandler Button1.Click, AddressOf ClickMethod
于 2013-02-19T09:02:53.147 回答