WebHost/Extention/ExJsonResult.cs

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using Common;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;

namespace WebUI.Extention
{
    public class ExJsonResult : JsonResult
    {
        public ExJsonResult(object obj)
        {
            base.Data = obj;
        }

        public override void ExecuteResult(ControllerContext context)
        {
            string json = JsonConvert.SerializeObject(Data, new ExJsonConverter());
            context.HttpContext.Response.ContentType = "application/json";
            context.HttpContext.Response.Write(json);
        }

        public class ExJsonConverter : JsonConverter
        {

            public override bool CanConvert(Type objectType)
            {
                return objectType == typeof(long) || objectType.IsEnum || (objectType.IsGenericType && objectType.GetGenericTypeDefinition() == typeof(Nullable<>) && objectType.GetGenericArguments()[0] == typeof(DateTime)) || objectType == typeof(DateTime) || objectType == typeof(String);
            }

            public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
            {
                throw new NotImplementedException();
            }

            public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
            {
                if (value != null)
                {
                    string str = string.Empty;

                    if (value is DateTime)
                    {
                        DateTime dt;
                        DateTime.TryParse(value.ToString(), out dt);
                        str = dt.ToString("yyyy-MM-dd HH:mm:ss");
                    }
                    if (value is long)
                    {
                        str = value.ToString();
                    }
                    if (value is string)
                    {
                        str = Utility.NoHTML(value.ToString());
                    }

                    writer.WriteValue(str);
                }