<%@ Page Language="C#" %> <html xmlns="http://www.w3.org/1999/xhtml"> <head id="Head1" runat="server"> <script runat="server"> int? time; public int Time { get { if (this.time.HasValue) return time.Value; return (time = (int)(Session["time"] ?? 0)).Value; } set { Session["time"] = this.time = value; } } public System.Threading.Thread Current { get { return (System.Threading.Thread)Session["Current"]; } set { Session["Current"] = value; } } public void Start(object sender, EventArgs e) { this.Time = 0; System.Threading.Thread thread = new System.Threading.Thread(new System.Threading.ThreadStart(Process)); this.Current = thread; thread.Start(); } private void Process() { this.Time++; /// /// some operation on each second. /// System.Threading.Thread.Sleep(1000); Process(); } protected void Update(object sender, EventArgs e) { this.lblTime.Text = this.Time.ToString(); } protected void Stop(object sender, EventArgs e) { if (this.Current != null) { this.Current.Abort(); while (this.Current.IsAlive) System.Threading.Thread.Sleep(1); } } </script> </head> <body> <form id="form1" runat="server"> <asp:Button runat="server" ID="btnStart" Text="Start" OnClick="Start" /> <asp:Button runat="server" ID="btnUpdate" Text="Update Time" OnClick="Update" /> <asp:Button runat="server" ID="btnStop" Text="Stop" OnClick="Stop" /> <hr /> <asp:Label runat="server" ID="lblTime" /> </form> </body> </html>
Wednesday, October 13, 2010
How to implement a background worker thread
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