$(function(){
        //绑定按钮事件
        $("#digclick").click(function(){        
            if ($("#fileid").val() == 0)
                return;
            $.ajax({
               type: "POST",
               contentType:"application/json;utf-8",
               url: "/service/DigFile.asmx/HelloWorld",
               data:"{fileid:\""+$("#fileid").val()+"\"}",
               success: function(data){                   
                   var json = null;
                   try{
                        json=eval('(' + data + ')');                        
                   }catch(e){
                    alert("返回字符串不是json格式!");
                    return;
                   }
                   
                   if (json.d.Count > 0)
                   {
                        $("#digcount").text(json.d.Count);
                   }                   
                   
                   alert(json.d.Message);
                   $("#fileid").val("0");
                   
               }
            });
        })         
    })