Raymond Du <rdrd@yahoo.com> wrote:
> This is my first mutiple threading progam, I have an AST.Net page
> zThreadPool.aspx which has one button: button1 and one Label: label1. The
> following code snippet does not work at all:

"Raymond Du" wrote:

> Hi,
>
> This is my first mutiple threading progam, I have an AST.Net page
> zThreadPool.aspx which has one button: button1 and one Label: label1. The
> following code snippet does not work at all:
>
> public partial class zThreadPool : System.Web.UI.Page
> {
>
> void CallbackProc(object obj1)
> {
> ((Label)obj1).Text = DateTime.Now.ToString();
> }
>
> protected void Button1_Click(object sender, EventArgs e)
> {
> ThreadPool.QueueUserWorkItem(new WaitCallback(CallbackProc), Label1);
> }
>
> }
>
> When I click on button1, label1 is not updated, no exceptions thrown. I put
> a break point at
>
> ((Label)obj1).Text = DateTime.Now.ToString();
>
> The debugger did break on this line.
>
> Any Ideas?
>
> TIA
>
>
>
>