jcgogo

寫一個 Handler 的程式，其副檔名為 ashx．

先開一個新的 GetData.ashx 檔案．

GetData.ashx

<%@ WebHandler Language="C#" Class="GetData" %>

using System.Web;

using System.Data;

public class GetData : IHttpHandler {

    public void ProcessRequest (HttpContext context) {

        prj_class my_class = new prj_class();

        int id = int.Parse(context.Request["id"]);

        DataTable dt = my_class.GetData(id);

        string result  = "[";

        if (dt.Rows.Count > 0)

    {

            foreach (DataRow row in dt.Rows)

       {

             result += string.Format("{{\"Id\":\"{0}\" ,\" Name\":\"{1}\"}},",

                 row["Id"].ToString(),

                 row["Name"].ToString()

             );

       }

       result = result.TrimEnd(',');       

　　}

　　result += "]";

    context.Response.Write(result);  

 　}

    public bool IsReusable {

        get {

            return false;

        }

    }

}

前端ajax：

var techdata=null;

var ChkTechData=false;

$.ajax({

     url: "GetData.ashx",

     type: 'get',

     data: { id: "25" }, //若有多個參數用逗號,例如id:"25",name:"david"

     async: false,

     dataType: 'json',

     error: function (xhr, ajaxOptions, thrownError) {

             alert(thrownError);

     },

     success: function (response) {                          

              techdata = response;   

              if(techdata.length >0){

                            ChkTechData=true;           

               }

     }

});