linkbutton click事件

Question

I have dynamically added a linkbutton to the page. But the click event is not working. What could be the problem? Thanks for your help. I am adding a linkbutton on button click event. Here is my code.

protected void Button1_Click(object sender, EventArgs e)
{
    LinkButton lb = new LinkButton(); 
    lb.Text = "dsadsa";
    lb.ID = "22";
    lb.CommandArgument = "22"; 
    lb.CommandName = "22"; 
    lb.Command += new CommandEventHandler(lb1_Command); 
    PlaceHolder1.Controls.Add(lb);
}
protected void lb1_Command(object sender, CommandEventArgs e)
{
    Label1.Text = e.CommandName; 
}

Answer 1

the linkbutton isn't recreated when the linkbutton is clicked thus you're event handler isn't registered thus you're event doesn't get fired.

Adding a button in an eventhandler is almost always a bad idea, you can add this by default on the page and just set it to Button.Visible = false . This way you can register your eventhandler earlier in say Page_Load and set it visible from the event handler.

Answer 2

It's too late for adding the control on controls even handlers. The best way to add control is Init event, I guess on Load it will work too.

Answer 3

您需要在页面加载中添加控件，因为单击后不会再次创建链接按钮。

Answer 4

请参阅linkbutton click和linkbutton命令： http ： //www.coderun.com/ide/？ w = p-yDA -ntG0K4UrMkiImuRQ