动态创建按钮VB.Net与循环



我在VB.NET中动态创建按钮时遇到了一个非常奇怪的问题:在循环中创建它们时,不会触发Click事件。这是我的代码:

    Panel1.Controls.Clear()
    For i As Integer = 0 To 100 Step 1
        Dim b15 As new Button
        b15.Text = "Test3"
        b15.id = "a" & i
        AddHandler b15.Click, AddressOf updateFunc
        Panel1.Controls.Add(b15)
    Next

这个不起作用(只有PageLoad被触发,而不是Click事件(,但当我键入时

    Dim b14 As New Button
    b14.Text = "Test"
    b14.id = "asdf"
    AddHandler b14.Click, AddressOf updateFunc
    Panel1.Controls.Add(b14)

它工作正常,事件被触发。

函数updateFunc的标题如下:

Protected Sub updateFunc(ByVal sender As Object, ByVal e As System.EventArgs)

有什么想法为什么它不适用于Loop吗?谢谢你的回答!

是否包含IsPostBack检查?我想是你干的。尝试在外部创建控件。

 Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
    If Not IsPostBack Then
       'Do Something
    Else
       'Do Something else
    End If
    Panel1.Controls.Clear()
    For i As Integer = 0 To 10 Step 1
        Dim b15 As New Button
        b15.Text = "Test3"
        b15.ID = "a" & i
        AddHandler b15.Click, AddressOf updateFunc
        Panel1.Controls.Add(b15)
    Next
 End Sub
flpnlContent.Controls.Clear()
        For i As Integer = 0 To 10
            Dim b15 As New Button
            b15.Text = "a" & i
            b15.Name = "a" & i
            AddHandler b15.Click, AddressOf btn_Click
            flpnlContent.Controls.Add(b15)
        Next

使用它将工作

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