json DateTime转换

前台：

    function ChangeDateFormat(jsondate) {
        jsondate = jsondate.replace("/Date(", "").replace(")/", "");
        if (jsondate.indexOf("+") > ) {
            jsondate = jsondate.substring(, jsondate.indexOf("+"));
        }
         else if (jsondate.indexOf("-") > ) {
             jsondate = jsondate.substring(, jsondate.indexOf("-"));
         }     

        var date = new Date(parseInt(jsondate, ));
         var month = date.getMonth() +  <  ? "" + (date.getMonth() + ) : date.getMonth() + ;
         var currentDate = date.getDate() <  ? "" + date.getDate() : date.getDate();
         return date.getFullYear() + "-" + month + "-" + currentDate;
     }  

后台：
 /// <summary>
     /// 将Json序列化的时间由/Date(1294499956278+0800)转为字符串
     /// </summary>
     private static string ConvertJsonDateToDateString(Match m)
     {
         string result = string.Empty;
         DateTime dt = new DateTime(1970,1,1);
         dt = dt.AddMilliseconds(long.Parse(m.Groups[1].Value));
         dt = dt.ToLocalTime();
         result = dt.ToString("yyyy-MM-dd HH:mm:ss");
        return result;
     }

使用：
 string p = @"/d{4}-/d{2}-/d{2}/s/d{2}:/d{2}:/d{2}";
        MatchEvaluator matchEvaluator = new MatchEvaluator(ConvertDateStringToJsonDate);
        Regex reg = new Regex(p);
    string     jsonString = reg.Replace(jsonString, matchEvaluator);    

js使用：ChangeDateFormat("/Date(1294499956278+0800)/");