Question

我有一个jQuery Ajax WebMethod调用，如下所示：

<script type="text/javascript">
    $(document).ready(function () {
        $("#btnsubmit").click(function () {

            var arr = new Array();
            arr.push($("#control1").val()); arr.push($("#control2").val()); arr.push($("#control13 option:selected").val()); arr.push($("#control4 option:selected").val()); arr.push($("#control15 option:selected").val());

            var requestedData = JSON.stringify(arr);
            requestedData = "{'details':'" + requestedData + "'}";

            $.ajax({
                type: "POST",
                contentType: "application/json; charset=utf-8",
                url: "EmployeeDemotion.aspx/Save",
                data: requestedData,
                dataType: "json",
                success: function (result) {
                  //check the value returned from the WebMethod and provide alerts accordingly

                },

                error: function (result) {
                    alert("Error");
                }

            });
        });

    });
</script>

，WebMethod如下：

 [WebMethod(EnableSession = true)]
     public static InsertDetails[] Save(string details)
        {

            DataTable dt = new DataTable(); DataTable dts = new DataTable();

            List<InsertDetails> data = new List<InsertDetails>();
            JavaScriptSerializer js = new JavaScriptSerializer();
            string[] Tags = js.Deserialize<string[]>(details);
            object[] obj = new object[8];
            obj[0] = Tags[0].ToString(); obj[1] = Tags[1].ToString(); obj[2] = Tags[2].ToString(); obj[3] = Tags[3].ToString();
            obj[4] = Tags[4].ToString(); 


            int a = //say condition 1
            int b = //say condition 2
            if (a< b)
            {

             //insert into database and set a value which says the insertion has succeeded

            }
            else
            {
                //alert that data cannot be inserted
            }

            return data.ToArray();
        }

现在我需要将任何可能类型的值（布尔值，数组，字符串，整数或其他）返回到ajax方法，以便ajax方法中的success函数提醒插入状态（如te片段中所述））;即;应该返回一个值以及最后一个语句“return data.ToArray（）;”到ajax方法。我不需要返回元素'data'，验证插入的值应该与'data'或任何其他形式一起返回。

Answer 1

不确定你想要什么。是否希望将数据和标志都返回到客户端函数或仅返回标志。

案例1：您想要的只是返回有关save

内发生的操作的消息

只需像这样更改您的保存方法

[WebMethod(EnableSession = true)]
public static string Save(string details)
{
      string message =string.Empty;

      /// rest of the usual code of yours   
      ///
      if (a< b)
      {
         //rest of the code
         message = "Insertion Successful";
      }
      else
      {
         //rest of the code
         message = "Error Occured";
      }
}

在ajax success内的客户端，简单地执行此操作：

success: function (result) {
               alert(result.d);
}

案例2：您希望在插入成功的情况下发送数据

创建一个包装器并将数据和标志都附加到它上面。序列化它然后将其发送到客户端功能。即

//wrapper class
public class ServiceResponse
{
   public bool IsSuccess {get;set;}
   public string Message {get;set;}
}

现在在save内执行此操作：

[WebMethod(EnableSession = true)]
public static string Save(string details)
{
      ServiceResponse serviceResponse =new ServiceResponse();

      /// rest of the usual code of yours   
      ///
      if (a< b)
      {
         //rest of the code
          serviceResponse.IsSuccess= true;
          serviceResponse.Message = String.Join(",",data.ToArray());
      }
      else
      {
         //rest of the code
         serviceResponse.IsSuccess = false;
      }

    return new JavaScriptSerializer().Serialize(serviceResponse);
}

并在您的客户端方法中使用它，如：

  success: function (result) {
          var jsonData = $.parseJSON(result.d);
          if(jsonData.IsSuccess){
              alert('success');
              grid.data(jsonData.Message);
          }
          else{
              alert('failure');
          } 
  }

根据WebMethod中提供的条件从WebMethod返回值

1 个答案: