问个创建asp.net Ajax服务器端控件的问题。

Question

using System; 
using System.Collections.Generic; 
using System.Configuration; 
using System.Linq; 
using System.Web; 
using System.Web.Security; 
using System.Web.UI; 
using System.Web.UI.WebControls; 
using System.Web.UI.WebControls.WebParts; 
using System.Web.UI.HtmlControls; 
using System.Xml.Linq; namespace AjaxServerControl1 
{ 
    ///  <summary> 
    /// ServerControl1 的摘要说明 
    ///  </summary> 
    public class ServerControl1 : System.Web.UI.WebControls.Button , IScriptControl 
    { 
        public ServerControl1():base() 
        { 
             
        } 
        public string ClientClickFunction  
        {  
            get 
            {  
                object value = ViewState["clientClickFunction"];  
                return (value == null) ? string.Empty : (string)value;  
            }  
            set 
            {  
                ViewState["clientClickFunction"] = value; 
            }  
        } 
        protected override void OnPreRender(EventArgs e) 
        {  
            base.OnPreRender(e);  
            ScriptManager scriptManager = ScriptManager.GetCurrent(Page);  
            if (scriptManager == null) 
            {  
                throw new InvalidOperationException("ScriptManager required on the page."); 
            }  
            scriptManager.RegisterScriptControl(this);  
        } 
        protected override void Render(HtmlTextWriter writer)  
        { 
            base.Render(writer);  
            if (!DesignMode)  
            { 
                ScriptManager.GetCurrent(this.Page).RegisterScriptDescriptors(this); 
            } 
        } 
        public IEnumerable <ScriptDescriptor> GetScriptDescriptors() 
        { 
            ScriptControlDescriptor descriptor = new ScriptControlDescriptor("AjaxServerControl1.ClientControl1", this.ClientID); 
            descriptor.AddEvent("click", ClientClickFunction); 
            yield return descriptor; 
        } 
         
        // 生成脚本引用 
        public IEnumerable <ScriptReference> GetScriptReferences() 
        { 
            yield return new ScriptReference("AjaxServerControl1.ClientControl1.js", this.GetType().Assembly.FullName); 
        } 
    } 
}

Answer 1

///  <reference name="MicrosoftAjax.js"/> 
Type.registerNamespace("AjaxServerControl1"); AjaxServerControl1.ClientControl1 = function(element) { 
    this._clickHandler = null; 
    AjaxServerControl1.ClientControl1.initializeBase(this, [element]); 
} AjaxServerControl1.ClientControl1.prototype = { 
    initialize: function() { 
        AjaxServerControl1.ClientControl1.callBaseMethod(this, 'initialize'); 
        this._clickHandler = Function.createDelegate(this, this._onClick); 
        $addHandlers(target, {'click': this._clickHandler}, this); 
         
        // 在此处添加自定义初始化 
    }, 
    dispose: function() {         
        //在此处添加自定义释放操作 
        delete this._clickHandler; 
        AjaxServerControl1.ClientControl1.callBaseMethod(this, 'dispose'); 
    }, 
    add_click : function(handler) { 
        this.get_events().addHandler('click', handler); 
    }, 
    remove_click : function(handler) { 
        this.get_events().removeHandler('click', handler); 
    },     
    _onClick : function(e) { 
        e.preventDefault(); 
        var handler = this.get_events().getHandler('click'); 
        if (handler != null) { 
            handler(this, Sys.EventArgs.Empty); 
        } 
    } 
} 
AjaxServerControl1.ClientControl1.registerClass('AjaxServerControl1.ClientControl1', Sys.UI.Control); if (typeof(Sys) !== 'undefined') Sys.Application.notifyScriptLoaded();