动态添加的linkbutton的处理程序没有被调用 [英] handler of dynamically added linkbutton is not getting called

问题描述

大家好，

在我的项目中，当我遍历数据库表时，我正在动态创建一些链接按钮.我正在创建按钮并添加事件处理程序，如下所示

Hello All,

In my Project i am creating some linkbuttons dynamically when i iterate through my DB table. I am creating the buttons and adding event handler as follows

'Iterating through the Table
If (ds.Tables(0).Rows.Count > 0) Then
                'Reading row by row from DB
                Dim ros As Int32 = ds.Tables(0).Rows.Count - 1
                Do While ros >= 0

                    Dim tr As TableRow = New TableRow()
                    Dim tc As TableCell = New TableCell()
                    Dim btnUser As LinkButton = New LinkButton()
                    AddHandler btnUser.Click, AddressOf btnUser_Click
                    btnUser.ID = (ds.Tables(0).Rows(ros)("UserName")).ToString
                    tc.Controls.Add(btnUser)
                    tr.Cells.Add(tc)
                    tbl.Rows.Add(tr)

                    ros = ros - 1
                Loop
End If

我给的事件处理程序如下

The event handler i have given is as follows

Private Sub btnUser_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
       'setting the session value
       Dim btn As LinkButton = sender
       Dim newsId As String = btn.ID.ToString
       Session("SearchedUserName") = newsId

   End Sub

但是在运行时单击链接按钮时，未调用处理程序函数.我无法理解我在哪里犯了错误.有人可以帮我这个忙.

But while clicking on the linkbutton at runtime,the handler function is not getting called. I am not able to understand where i made mistake. Anybody help me in this please.

推荐答案

该代码在生命周期中发生了什么事件?我相信您必须在Init 或PreInit 页面事件中动态添加控件.

将控件添加到这些事件中的任何一个中，然后只有您才能处理click事件.
试试这个:
http://www.aspsnippets.com/Articles/在ASP.Net.aspx中创建动态按钮链接按钮和图像按钮 [

What event in the lifecycle is that code in? You have to add controls dynamically, I believe, in the Init or PreInit page events.

Add your controls in either of these events then only you''ll able to handle click event.
Try this:
http://www.aspsnippets.com/Articles/Creating-Dynamic-Button-LinkButton-and-ImageButton-in-ASP.Net.aspx[^]



--Amit

检查此
不触发动态创建按钮的单击事件 [ ^ ]
最好的问候
米特瓦里(M.Mitwalli)

Hi ,
Check this
not firing dynamically cretated button click event[^]
Best Regards
M.Mitwalli

这篇关于动态添加的linkbutton的处理程序没有被调用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！