asp.net如何在按钮点击事件中添加动态LinkBut​​ton？

Question

有没有办法在点击提交按钮后添加 LinkBut​​ton 并让它正确回发。以这种情况为例。

加载了一个页面，上面有一个上传控件和一个提交按钮。做出选择并且用户单击提交按钮后，我想在另一个分隔符中显示已上传的文件，并在文件名旁边使用可选的删除按钮。问题是，当用户单击提交按钮时，我尝试在单击处理程序上添加控件，因为这是请求文件的位置，但是当我尝试在控件响应中添加链接按钮时，事件当然不会挂钩.

<form .....
<telerik:RadAsyncUpload ID="CtrlRadAsyncUpload" runat="server">
</telerik:RadAsyncUpload>
<asp:Button ID="CtrlSave" runat="server" Text="Submit Plans" />


protected override void OnInit(EventArgs e)
{
    base.OnInit(e);
    CtrlSave.Click += new EventHandler(CtrlSave_Click);
}

protected void Page_Load(object sender, EventArgs e)
{
 //the problem is here, the new files are not created until after telerik has processed it own button click. I could add the buttons here, but the files are not posted yet. So i try to add them in the button click event. see below.
}

void CtrlSave_Click(object sender, EventArgs e)
{
 any LinkButtons created and added to the controls collection are there, but they do not post back properly

 //get uploaded data
 LinkButton pDelete = new LinkButton();
            pDelete.Text = "Remove";
            pDelete.Command += new CommandEventHandler(pDelete_Command);
            pDelete.CommandArgument = pFile;
            pDelete.CommandName = "Delete";
            Controls.Add(pDelete);
}

有没有人有解决这个问题的好主意？我浏览了整个网络，我认为我对页面生命周期有相当不错的掌握。但这很烦人。我似乎经常被这些问题所困扰。

Answer 1

你能不能在开头加上LinkButton pDelete，但是在点击时设置它Visible和其他属性，那么它就会一直存在，问题就会消失。