一个简单的自定义控件的事件处理示例 [IPostBackEventHandler]

    public class ClickEventArgs : System.EventArgs
    {
        private string _cuPg;

        public ClickEventArgs(string arg)
        {
            _cuPg = arg;
        }

        public string CuPg
        {
            get { return _cuPg; }
        }
    }

    public delegate void SClickDelegate(object sender, ClickEventArgs e);

    public class TC : System.Web.UI.Control, IPostBackEventHandler
    {
        public event SClickDelegate SClick;

        private string _currentArg = string.Empty;

        public string CurrentArg
        {
            get { return _currentArg; }
            set { _currentArg = value; }
        }

        public TC()
        {
        }

        protected override void RenderChildren(HtmlTextWriter writer)
        {
            base.RenderChildren(writer);

            for(int i=0; i <10; i++)
            {
                writer.AddAttribute(HtmlTextWriterAttribute.Name, this.UniqueID + "_CustomerControlBndy");
                writer.RenderBeginTag(HtmlTextWriterTag.A);
                if (i.ToString() == _currentArg)
                {
                    writer.AddAttribute(HtmlTextWriterAttribute.Disabled, "true");
                }
                else
                {
                    writer.AddAttribute(HtmlTextWriterAttribute.Href, this.Page.GetPostBackClientHyperlink(this, i.ToString()));
                }

                writer.Write(i.ToString());
                writer.RenderEndTag();
                writer.WriteBreak();
            }
        }

        public void OnSClick(ClickEventArgs e)
        {
            if (this.SClick != null)
            {
                _currentArg = e.CuPg;
                SClick(this, e);
            }
        }


        #region IPostBackEventHandler 成员

        void IPostBackEventHandler.RaisePostBackEvent(string eventArgument)
        {
            this.RaisePostBackEvent(eventArgument);
        }

        protected virtual void RaisePostBackEvent(string arg)
        { 
            this.OnSClick(new ClickEventArgs(arg));
        }

        #endregion
    }