Dynamic WebUserControls Button Click event

**grahamxyz** · Jan 26th, 2012, 12:06 PM

I've been googling all day but I still can't get the button click event on
a dynamic WebUserControl to fire.

I've tried raising events delegates and everything else I can find.
The text in the controls seems to persist okay but no button clicks.

hopefully it's not relevent but I am using a WebApplication under VS2005

Thanks in advance.

here is my basic test code for the WebUserControl:

Code:

<%@ Control Language="vb" AutoEventWireup="false" CodeBehind="wuc.ascx.vb" Inherits="WebApplication1.wuc" %>
&nbsp;<asp:TextBox ID="TextBox1" runat="server" Width="216px">zzz</asp:TextBox>
<asp:Button ID="Button1" runat="server" Text="Button" />

Code:

Partial Public Class wuc
    Inherits System.Web.UI.UserControl


    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
    End Sub

    Public Property txt() As String
        Get
            Return TextBox1.Text
        End Get
        Set(ByVal value As String)
            TextBox1.Text = value
        End Set
    End Property


    Protected Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        ' breakpoint here is never reached !
    End Sub
End Class

here is my basic test code for the default page:

Code:

<%@ Page Language="vb" AutoEventWireup="false" CodeBehind="Default.aspx.vb" Inherits="WebApplication1._Default" %>

<%@ Register Src="wuc.ascx" TagName="wuc" TagPrefix="uc1" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:Button ID="ButtonNew" runat="server" Text="Button" Width="144px" />&nbsp;
        <asp:Panel ID="Panel1" runat="server" Height="192px" Width="368px">
        </asp:Panel>
        </div>
    </form>
</body>
</html>

Code:

Partial Public Class _Default


    Inherits System.Web.UI.Page

    Private Sub Page_Init(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Init
        If Page.IsPostBack Then
            Dim WL As List(Of wuc) = Session("wuclist")

            Dim count As Int16 = 0
            For Each w As wuc In WL
                count += 1
                w.EnableViewState = True
                w.ID = "wuc" + count.ToString
                w.txt = "now wuc is: " + w.ID.ToString
                Panel1.Controls.Add(w)
            Next

        Else
            Session("wuclist") = New List(Of wuc)
            Panel1.Controls.Clear()
        End If

    End Sub


    Protected Sub ButtonNew_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ButtonNew.Click
        Dim WL As List(Of wuc) = Session("wuclist")
        Dim count As Int16 = WL.Count + 1

        Dim wuc1 As New wuc
        wuc1 = DirectCast(LoadControl("~/wuc.ascx"), wuc)
        wuc1.ID = "wuc" + count.ToString
        wuc1.txt = "this is Wuc: " + wuc1.ID.ToString

        Panel1.Controls.Add(wuc1)

        WL.Add(wuc1)
        Session("wuclist") = WL
    End Sub


End Class

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