用asp.net寫的定時控件

using System; using System.Web.UI; using System.Web.UI.WebControls; using System.ComponentModel; [assembly:TagPrefix("Beyondbit.App.Web.UI.WebControls", "BBit")] namespace Beyondbit.App.Web.UI.WebControls { #region ElapsedEventArgs class public class ElapsedEventArgs : EventArgs { public int SignalTime; } #endregion /// /// 客戶端定時器 /// [DefaultProperty("Enabled"), ToolboxData("<{0}:ClientTimer runat=server>{0}:ClientTimer>")] public class ClientTimer : System.Web.UI.Control , System.Web.UI.IPostBackEventHandler // , System.Web.UI.IPostBackDataHandler { public delegate void ElapsedEventHandler( object sender, ElapsedEventArgs e ); public event ElapsedEventHandler Elapsed; protected virtual void OnElapsed( ElapsedEventArgs e) { if ( Elapsed != null ) Elapsed(this, e); } private int signalTime = 0; private int interval = 0 ; [Description("設置或獲取定時時間(毫秒)")] public int Interval { set { if( value <= 0 ) throw new ArgumentException( "Interval時間間隔不能小於或等於0" ); interval = value ; } get { return interval ; } } private bool enabled = false ; [Description("設置或獲取定時器是否啓用")] public bool Enabled { set{ enabled = value ; } get{ return enabled ; } } //public bool AutoReset = false ; [Description("停止定時器")] public void Stop() { enabled = false ; } protected override void OnPreRender(EventArgs e) { base.OnPreRender (e); if( this.enabled == false ) return; if( interval == 0 ) throw new ArgumentException( "定時器已啓動，但Interval時間間隔沒有設置" ); //js string jsId = this.UniqueID + "_js"; string clientFunction = this.UniqueID + "_OnElapsed"; signalTime = signalTime + this.interval ; string js = " "; Page.RegisterStartupScript( jsId , js ); } /// /// 將此控件呈現給指定的輸出參數。 /// /// 要寫出到的 HTML 編寫器 protected override void Render(HtmlTextWriter output) { //output.Write(Text); } #region IPostBackEventHandler 成員 public void RaisePostBackEvent( string eventArgument ) { if( eventArgument == "" ) throw new Exception( "eventArgument參數爲空！" ); signalTime = int.Parse( eventArgument ) ; ElapsedEventArgs e = new ElapsedEventArgs(); e.SignalTime = signalTime ; this.OnElapsed( e ); } #endregion #region IPostBackDataHandler 成員 // public void RaisePostDataChangedEvent() // { // // TODO: 添加 ClientTimer.RaisePostDataChangedEvent 實現 // } // // public bool LoadPostData(string postDataKey, System.Collections.Specialized.NameValueCollection postCollection) // { // // TODO: 添加 ClientTimer.LoadPostData 實現 // // string s = postCollection[ this.UniqueID + "_signalTime" ]; // if( s == null || s == "" ) return false; // // signalTime = Convert.ToInt32( s ); // // return false; // } #endregion } }