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我有使用 jQuery、ASP.NET、VB.NET 构建的 Web 应用程序。此应用程序具有使用 jQuery 选项卡构建的选项卡。单击选项卡时，用户控件会动态加载到 div 中，如下所示。

    //Load user control - jquery call to page method to load user control
LoadTabControlPage = function (tabselected) {
    var loc = window.location.href;
    loc = (loc.substr(loc.length - 1, 1) == "/") ? loc + "Default.aspx" : loc;
    $j.ajax({
        url: loc + "/Result",
        async: false,
        cache: false,
        type: "POST",
        data: '{ "controlName": "' + tabselected + '"}',
        contentType: "application/json; charset=utf-8",
        dataType: "json",
        statusCode: {
            200: function (response) {
                $j('#controlsdiv').show();
                $j('#controlsdiv').html(response.d);
            }
        }
    });
};

VB中的PageMethod：

    <WebMethod()> _
    Public Shared Function Result(controlName As String) As String
       Dim page As New UI.Page()
       Dim userControl As UserControl = DirectCast(page.LoadControl("UI/" + controlName.Replace(" ", "") + ".ascx"), UserControl)
       userControl.EnableViewState = False
       Dim form As New HtmlForm()
       form.Controls.Add(userControl)
       page.Controls.Add(form)

       Dim textWriter As New StringWriter()
       HttpContext.Current.Server.Execute(page, textWriter, False)
       Return textWriter.ToString()
    End Function

问题是加载用户控件后，它的按钮事件没有被触发。MyAscx 文件：

    <asp:Button ID="reportsbtn" Text="Run Report" OnClick="reportsbtn_Click" runat="server" />

MYAscx.vb

    Protected Sub reportsbtn_Click(sender As Object, e As EventArgs) Handles reportsbtn.Click        
        //Code            
    End Sub
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