[WebMethod]
public static string  GetData()  //静态方法
{
   string ss = "1123*";
   return ss += WhereSql();
}
public static string WhereSql()
{
    return "1";
}

 var request = getHTTPObject();  //获取XMLHttpRequest对象
 if (request) {
      request.open("post", "WebForm4.aspx/GetData", false);
      request.setRequestHeader("content-type", "application/json");
      request.setRequestHeader("datatype","json");
       request.onreadystatechange = function () {
        if (request.readyState == 4 && request.status == 200) {
                var msg = request.responseText;
                    if (msg.d != " ") {   //
                            var ovj = eval("("+msg+")");
                            alert(ovj.d);
                          
                        }
                    }
                };
            }
request.send(null);
//