用asp.net写的定时控件

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 ///

/// 客户端定时器 ///

[DefaultProperty("Enabled"), ToolboxData("<{0}:ClientTimer runat=server>")] 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("设置或获取定时时间(毫秒)")] public int Interval { set { if( value <= 0 ) throw new ArgumentException( "Interval时间间隔不能小于或等于0" ); interval = value ; } get { return interval ; } } private bool enabled = false ; [Description("设置或获取定时器是否启用")] public bool Enabled { set{ enabled = value ; } get{ return enabled ; } } //public bool AutoReset = false ; [Description("停止定时器")] 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( "定时器已启动，但Interval时间间隔没有设置" ); //js string jsId = this.UniqueID + "_js"; string clientFunction = this.UniqueID + "_OnElapsed"; signalTime = signalTime + this.interval ; string js = " "; Page.RegisterStartupScript( jsId , js ); } ///

/// 将此控件呈现给指定的输出参数。 ///

/// 要写出到的 HTML 编写器 protected override void Render(HtmlTextWriter output) { //output.Write(Text); } #region IPostBackEventHandler 成员 public void RaisePostBackEvent( string eventArgument ) { if( eventArgument == "" ) throw new Exception( "eventArgument参数为空！" ); signalTime = int.Parse( eventArgument ) ; ElapsedEventArgs e = new ElapsedEventArgs(); e.SignalTime = signalTime ; this.OnElapsed( e ); } #endregion #region IPostBackDataHandler 成员 // public void RaisePostDataChangedEvent() // { // // TODO: 添加 ClientTimer.RaisePostDataChangedEvent 实现 // } // // public bool LoadPostData(string postDataKey, System.Collections.Specialized.NameValueCollection postCollection) // { // // TODO: 添加 ClientTimer.LoadPostData 实现 // // string s = postCollection[ this.UniqueID + "_signalTime" ]; // if( s == null || s == "" ) return false; // // signalTime = Convert.ToInt32( s ); // // return false; // } #endregion } }