ASP.NET返回Json数据

Schedule.ashx:

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

using System;
using System.Data;
using System.Text;
using System.Web;
using System.Web.Script.Serialization;

public class Schedule : IHttpHandler {
    
    public void ProcessRequest (HttpContext context) {
        context.Response.ContentType = "application/json;charset=utf-8";

        //JavaScriptSerializer serializer = new JavaScriptSerializer();
        DataTable dt = Utilities.GetOffSchedule(402, 221).Tables[0];
        //string jsonStr = serializer.Serialize(list);
        context.Response.Clear();
        string jsonStr = DataTableToJson("list", dt);
        context.Response.Write(jsonStr);
        //context.Response.End();
    }
 
    public bool IsReusable {
        get {
            return false;
        }
    }

    public static string DataTableToJson(string jsonName, DataTable dt)
    {
        StringBuilder Json = new StringBuilder();
        Json.Append("{"" + jsonName + "":[");
        if (dt.Rows.Count > 0)
        {
            for (int i = 0; i < dt.Rows.Count; i++)
            {
                Json.Append("{");
                for (int j = 0; j < dt.Columns.Count; j++)
                {
                    Json.Append(""" + dt.Columns[j].ColumnName.ToString() + "":"" + dt.Rows[i][j].ToString() + """);
                    if (j < dt.Columns.Count - 1)
                    {
                        Json.Append(",");
                    }
                }
                Json.Append("}");
                if (i < dt.Rows.Count - 1)
                {
                    Json.Append(",");
                }
            }
        }
        Json.Append("]}");
        return Json.ToString();
    }

}