ExtJs对于Ajax的使用非常简单，看下面的代码:

 

1.Html页：

html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">


         
     
         
    
    
   
        
        获取服务端信息
    

2.服务端GetData.ashx

using System.Web;
using System.Web.Services;
namespace Ajax_WCF
{
    /// 

    /// codebehindclassname 的摘要说明
    /// 
    [WebService(Namespace = "http://tempuri.org/")]
    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
    public class GetData : IHttpHandler
    {
        public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";
            if (context.Request["name"] != null && context.Request["name"].ToString()!="")
            {
                context.Response.Write("Hello World," + context.Request["name"].ToString() + "!");
            }
            else 
            {
                context.Response.Write("Hello World");
            }
        }
        public bool IsReusable
        {
            get
            {
                return false;
            }
        }
    }
}