ASP NET MVC JsonResult Date Format

Question

I have a controller action that effectively simply returns a JsonResult of my model  So  in my method I have something like the following   return new JsonResult myModel     This works well  except for one problem  There is a date property in the model and this appears to be returned in the Json result like so      Date 1239018869048       How should I be dealing with dates so they are returned in the format I require  Or how do I handle this format above in script

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Not the most elegant way but this worked for me   var ms   date substring 6  date length - 2   var newDate   formatDate ms     function formatDate ms         var date   new Date parseInt ms        var hour   date getHours        var mins   date getMinutes             var time    AM           find time      if  hour  gt   12            time    PM                fix hours format     if  hour  gt  12            hour -  12            else if  hour    0            hour   12               fix minutes format     if  mins length    1            mins    0    mins               return formatted date time string     return date getMonth     1         date getDate           date getFullYear           hour         mins         time

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The better way to handle dates in knockoutjs is to use moment library and handle dates like boss  You can easily deal with dates like  Date -62135578800000    No need to bother of how your serialize date in controller   function jsonToDate date format       return moment date  format format       use it like  var formattedDate   jsonToDate date  MM DD YYYY     momentjs supports lots of date time formats and utility functions on dates

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Here s some JavaScript code I wrote which sets an  lt input type  date  gt  value from a date passed from ASP NET MVC   var setDate   function id  d      if  d     undefined  amp  amp  d     null        var date   new Date parseInt d replace   Date        replace            10        var day     0    date getDate    slice -2       var month     0     date getMonth     1   slice -2       var parsedDate   date getFullYear      -     month     -     day         id  val parsedDate            You call this function like so   setDate   productCommissionStartDate   data commissionStartDate     Where commissionStartDate is the JSON date passed by MVC

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I had a number of issues come up with JSON dates and decided to just get rid of the problem by addressing the date issue in the SQL   Change the date format to a string format   select flddate from tblName  select flddate  convert varchar 12   flddate  113  as fldDateStr from tblName   By using the fldDateStr the problem dissappeared and I could still use the date field for sorting or other purposes

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The easiest one   var milisegundos   parseInt data replace   Date        replace             Var newDate   new Date milisegundos  toLocaleDateString  en-UE

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Here s my solution in Javascript - very much like JPot s  but shorter  and possibly a tiny bit faster    value   new Date parseInt value substr 6        value substr 6   takes out the   Date   part  and the parseInt function ignores the non-number characters that occur at the end   EDIT  I have intentionally left out the radix  the 2nd argument to parseInt   see my comment below  Also  please note that ISO-8601 dates are preferred over this old format -- so this format generally shouldn t be used for new development  See the excellent Json NET library for a great alternative that serializes dates using the ISO-8601 format   For ISO-8601 formatted JSON dates  just pass the string into the Date constructor   var date   new Date jsonDate     no ugly parsing needed  full timezone support

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add jquery ui plugin in your page   function JsonDateFormate dateFormate  jsonDateTime        return   datepicker formatDate dateFormate  eval  new     jsonDateTime slice 1  -1

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What worked for me was to create a viewmodel that contained the date property as a string  Assigning the DateTime property from the domain model and calling the  ToString   on the date property while assigning the value to the viewmodel   A JSON result from an MVC action method will return the date in a format compatible with the view   View Model  public class TransactionsViewModel       public string DateInitiated   get  set        public string DateCompleted   get  set        Domain Model  public class Transaction     public DateTime  DateInitiated  get  set      public DateTime  DateCompleted  get  set       Controller Action Method  public JsonResult GetTransactions     var transactions    transactionsRepository All          var model   new List lt TransactionsViewModel gt              foreach  var transaction in transactions                        var item   new TransactionsViewModel                                                               DateInitiated   transaction DateInitiated ToString                    DateCompleted   transaction DateCompleted ToString                                model Add item                     return Json model  JsonRequestBehavior AllowGet

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Using jQuery to auto-convert dates with   parseJSON     Note  this answer provides a jQuery extension that adds automatic ISO and  net date format support    Since you re using Asp net MVC I suspect you re using jQuery on the client side  I suggest you read this blog post that has code how to use   parseJSON to automatically convert dates for you   Code supports Asp net formatted dates like the ones you mentioned as well as ISO formatted dates  All dates will be automatically formatted for you by using   parseJSON

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I found that creating a new JsonResult and returning that is unsatisfactory - having to replace all calls to return Json obj  with return new MyJsonResult   Data   obj   is a pain     So I figured  why not just hijack the JsonResult using an ActionFilter   public class JsonNetFilterAttribute   ActionFilterAttribute       public override void OnActionExecuted ActionExecutedContext filterContext                if  filterContext Result is JsonResult    false                        return                     filterContext Result   new JsonNetResult               JsonResult filterContext Result              private class JsonNetResult   JsonResult               public JsonNetResult JsonResult jsonResult                        this ContentEncoding   jsonResult ContentEncoding              this ContentType   jsonResult ContentType              this Data   jsonResult Data              this JsonRequestBehavior   jsonResult JsonRequestBehavior              this MaxJsonLength   jsonResult MaxJsonLength              this RecursionLimit   jsonResult RecursionLimit                     public override void ExecuteResult ControllerContext context                        if  context    null                                throw new ArgumentNullException  context                               var isMethodGet   string Equals                  context HttpContext Request HttpMethod                    GET                    StringComparison OrdinalIgnoreCase                if  this JsonRequestBehavior    JsonRequestBehavior DenyGet                  amp  amp  isMethodGet                                throw new InvalidOperationException                       GET not allowed  Change JsonRequestBehavior to AllowGet                                var response   context HttpContext Response               response ContentType   string IsNullOrEmpty this ContentType                      application json                     this ContentType               if  this ContentEncoding    null                                response ContentEncoding   this ContentEncoding                             if  this Data    null                                response Write JsonConvert SerializeObject this Data                                        This can be applied to any method returning a JsonResult to use JSON Net instead    JsonNetFilter  public ActionResult GetJson         return Json new   hello   new Date 2015  03  09     JsonRequestBehavior AllowGet      which will respond with    hello   2015-03-09T00 00 00 00 00     as desired     You can  if you don t mind calling the is comparison at every request  add this to your FilterConfig          filters Add new JsonNetFilterAttribute       and all of your JSON will now be serialized with JSON Net instead of the built-in JavaScriptSerializer

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0  In your cshtml    lt tr ng-repeat  value in Results  gt                    lt td gt   value FileReceivedOn   mydate   date    dd-MM-yyyy     lt  td gt   lt  tr gt    In Your JS File  maybe app js   Outside of app controller  add the below filter   Here the  mydate  is the function which you are calling for parsing the date    Here the  app  is the variable which contains the angular module  app filter  mydate   function          var re      Date    0-9              return function  x            var m   x match re           if  m  return new Date parseInt m 1             else return null

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There are quite a bit of answers to handle it client side  but you can change the output server side if you desired   There are a few ways to approach this  I ll start with the basics  You ll have to subclass the JsonResult class and override the ExecuteResult method  From there you can take a few different approaches to change the serialization   Approach 1  The default implementation uses the JsonScriptSerializer  If you take a look at the documentation  you can use the RegisterConverters method to add custom JavaScriptConverters  There are a few problems with this though  The JavaScriptConverter serializes to a dictionary  that is it takes an object and serializes to a Json dictionary  In order to make the object serialize to a string it requires a bit of hackery  see post  This particular hack will also escape the string   public class CustomJsonResult   JsonResult       private const string  dateFormat    yyyy-MM-dd HH mm ss        public override void ExecuteResult ControllerContext context                if  context    null                        throw new ArgumentNullException  context                       HttpResponseBase response   context HttpContext Response           if   String IsNullOrEmpty ContentType                         response ContentType   ContentType                    else                       response ContentType    application json                     if  ContentEncoding    null                        response ContentEncoding   ContentEncoding                    if  Data    null                        JavaScriptSerializer serializer   new JavaScriptSerializer                    Use your custom JavaScriptConverter subclass here              serializer RegisterConverters new JavascriptConverter     new CustomConverter                  response Write serializer Serialize Data                        Approach 2  recommended   The second approach is to start with the overridden JsonResult and go with another Json serializer  in my case the Json NET serializer  This doesn t require the hackery of approach 1  Here is my implementation of the JsonResult subclass   public class CustomJsonResult   JsonResult       private const string  dateFormat    yyyy-MM-dd HH mm ss        public override void ExecuteResult ControllerContext context                if  context    null                        throw new ArgumentNullException  context                       HttpResponseBase response   context HttpContext Response           if   String IsNullOrEmpty ContentType                         response ContentType   ContentType                    else                       response ContentType    application json                     if  ContentEncoding    null                        response ContentEncoding   ContentEncoding                    if  Data    null                           Using Json NET serializer             var isoConvert   new IsoDateTimeConverter                isoConvert DateTimeFormat    dateFormat              response Write JsonConvert SerializeObject Data  isoConvert                        Usage Example     HttpGet  public ActionResult Index         return new CustomJsonResult   Data   new   users db Users ToList             Additional credits  James Newton-King

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I had the same problem and instead of returning the actual date value I just used ToString  dd MMM yyyy   on it  Then in my javascript I used new Date datevalue   where datevalue may be  01 Jan 2009

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Ajax communication between the client and the server often involves data in JSON format  While JSON works well for strings  numbers and Booleans it can pose some difficulties for dates due to the way ASP NET serializes them  As it doesn t have any special representation for dates  they are serialized as plain strings   As a solution the default serialization mechanism of ASP NET Web Forms and MVC serializes dates in a special form -  Date ticks  - where ticks is the number of milliseconds since 1 January 1970   This problem can be solved in 2 ways   client side  Convert the received date string into a number and create a date object using the constructor of the date class with the ticks as parameter   function ToJavaScriptDate value      var pattern    Date                var results   pattern exec value     var dt   new Date parseFloat results 1       return  dt getMonth     1          dt getDate           dt getFullYear        server side  The previous solution uses a client side script to convert the date to a JavaScript Date object  You can also use server side code that serializes  NET DateTime instances in the format of your choice  To accomplish this task you need to create your own ActionResult and then serialize the data the way you want   reference    http   www developer com net dealing-with-json-dates-in-asp net-mvc html

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I found this to be the easiest way to change it server side   using System Collections Generic  using System Web Mvc  using Newtonsoft Json  using Newtonsoft Json Converters  using Newtonsoft Json Serialization   namespace Website            lt summary gt          This is like MVC5 s JsonResult but it uses CamelCase and date formatting           lt  summary gt      public class MyJsonResult   ContentResult               private static readonly JsonSerializerSettings Settings   new JsonSerializerSettings                       ContractResolver   new CamelCasePropertyNamesContractResolver                Converters   new List lt JsonConverter gt    new StringEnumConverter                         public FindersJsonResult object obj                        this Content   JsonConvert SerializeObject obj  Settings               this ContentType    application json

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Just to expand on casperOne s answer   The JSON spec does not account for Date values  MS had to make a call  and the path they chose was to exploit a little trick in the javascript representation of strings  the string literal     is the same as       and a string literal will never get serialized to       even      must be mapped to          See http   msdn microsoft com en-us library bb299886 aspx intro to json topic2 for a better explanation  scroll down to  From JavaScript Literals to JSON       One of the sore points of JSON is the   lack of a date time literal  Many   people are surprised and disappointed   to learn this when they first   encounter JSON  The simple explanation    consoling or not  for the absence of   a date time literal is that JavaScript   never had one either  The support for   date and time values in JavaScript is   entirely provided through the Date   object  Most applications using JSON   as a data format  therefore  generally   tend to use either a string or a   number to express date and time   values  If a string is used  you can   generally expect it to be in the ISO   8601 format  If a number is used    instead  then the value is usually   taken to mean the number of   milliseconds in Universal Coordinated   Time  UTC  since epoch  where epoch is   defined as midnight January 1  1970    UTC   Again  this is a mere   convention and not part of the JSON   standard  If you are exchanging data   with another application  you will   need to check its documentation to see   how it encodes date and time values   within a JSON literal  For example    Microsoft s ASP NET AJAX uses neither   of the described conventions  Rather    it encodes  NET DateTime values as a   JSON string  where the content of the   string is  Date ticks   and where   ticks represents milliseconds since   epoch  UTC   So November 29  1989    4 55 30 AM  in UTC is encoded as      Date 628318530718        A solution would be to just parse it out   value   new Date parseInt value replace   Date        replace           10      However I ve heard that there is a setting somewhere to get the serializer to output DateTime objects with the new Date xxx  syntax  I ll try to dig that out     The second parameter of JSON parse   accepts a reviver function where prescribes how the value originally produced by  before being returned   Here is an example for date   var parsed   JSON parse data  function key  value      if  typeof value      string         var d      Date    d        exec value       return  d    new Date  d 1     value        return value        See the docs of JSON parse

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See this thread   http   forums asp net p 1038457 1441866 aspx 1441866  Basically  while the Date   format is valid javascript  it is NOT valid JSON  there is a difference    If you want the old format  you will probably have to create a facade and transform the value yourself  or find a way to get at the serializer for your type in the JsonResult and have it use a custom format for dates

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Moment js is an extensive datetime library that also supports this  http   momentjs com docs   parsing asp-net-json-dates   ex  moment   Date 1198908717056-0700      It might help  plunker output

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Annoying  isn t it    My solution was to change my WCF service to get it to return DateTimes in a more readable  non-Microsoft  format   Notice below  the  UpdateDateOriginal   which is WCF s default format of dates  and my  UpdateDate   which is formatted to something more readable     Here s how to do it   Changing WCF date format  Hope this helps

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Override the controllers Json JsonResult to return JSON Net   This works a treat

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You can use this method   String prototype jsonToDate   function        try          var date          eval   date   new     this  replace     g               return date             catch e           return new Date 0

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It returns Server Date Format  You need to define your own function   function jsonDateFormat jsonDate         Changed data format    return  new Date parseInt jsonDate substr 6     format  mm-dd-yyyy   h MM tt

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I have been working on a solution to this issue as none of the above answers really helped me   I am working with the jquery week calendar and needed my dates to have time zone information on the server and locally on the page   After quite a bit of digging around  I figured out a solution that may help others   I am using asp net 3 5  vs 2008  asp net MVC 2  and jquery week calendar    First  I am using a library written by Steven Levithan that helps with dealing with dates on the client side  Steven Levithan s date library   The isoUtcDateTime format is perfect for what I needed   In my jquery AJAX call I use the format function provided with the library with the isoUtcDateTime format and when the ajax call hits my action method  the datetime Kind is set to local and reflects the server time   When I send dates to my page via AJAX  I send them as text strings by formatting the dates using  ddd  dd MMM yyyy HH   mm   ss  GMT zzzz    This format is easily converted client side using  var myDate   new Date myReceivedDate     Here is my complete solution minus Steve Levithan s source  which you can download   Controller   public class HomeController   Controller       public const string DATE FORMAT    ddd  dd MMM yyyy HH   mm   ss  GMT zzzz        public ActionResult Index                 ViewData  Message      Welcome to ASP NET MVC             return View               public ActionResult About                 return View                public JsonResult GetData                 DateTime myDate   DateTime Now ToLocalTime             return new JsonResult   Data   new   myDate   myDate ToString DATE FORMAT                  public JsonResult ReceiveData DateTime myDate                return new JsonResult   Data   new   myDate   myDate ToString DATE FORMAT                 Javascript    lt script type  text javascript  gt   function getData           ajax           url    Home GetData           type   POST           cache   false           dataType   json           success  function data                alert data myDate               var newDate   cleanDate data myDate               alert newDate               sendData newDate                         function cleanDate d        if  typeof d     string             return new Date d     Date parse d     new Date parseInt d              if  typeof d     number             return new Date d             return d     function sendData newDate          ajax           url    Home ReceiveData           type   POST           cache   false           dataType   json           data                        myDate  newDate format  isoUtcDateTime                      success  function data                alert data myDate               var newDate   cleanDate data myDate               alert newDate                           bind myButton click event to call getData   document  ready function            input myButton   bind  click   getData        lt  script gt    I hope this quick example helps out others in the same situation I was in   At this time it seems to work very well with the Microsoft JSON Serialization and keeps my dates correct across timezones

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Not for nothing  but there is another way   First  construct your LINQ query   Then  construct a query of the Enumerated result and apply whatever type of formatting works for you   var query   from t in db Table select new   t DateField    var result   from c in query AsEnumerable   select new   c DateField toString  dd MMM yyy        I have to say  the extra step is annoying  but it works nicely

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Format the date within the query     var  myModel   from  m in model ModelSearch word      select new   date     DateTime  m Date  ToShortDateString        The only problem with this solution is that you won t get any results if ANY of the date values are null   To get around this you could either put conditional statements in your query BEFORE you select the date that ignores date nulls or you could set up a query to get all the results and then loop through all of that info using a foreach loop and assign a value to all dates that are null BEFORE you do your SELECT new     Example of both   var  test   from  t in adc ItemSearchTest word                          where  t Date    null                         select new   date     DateTime  t Date  ToShortDateString        The second option requires another query entirely so you can assign values to all nulls   This and the foreach loop would have to be BEFORE your query that selects the values   var  testA   from  t in adc ItemSearchTest word                           select  i               foreach  var detail in  testA                                if  detail Date   null                                        detail Date  Convert ToDateTime  1 1 0001                                      Just an idea which I found easier than all of the javascript examples

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