Question

I know that are a lot of posts about consuming a WCF REST through JQuery/JSON, but I can’t get it to work. I’m currently stuck at a date parameter. Below is my C# method:

[OperationContract]
[WebInvoke]
[TransactionFlow(TransactionFlowOption.Allowed)]
string GoodRegister(DateTime pDtTimeStampTransac, Int32 pIDResource, Decimal pQty, enQtyLogType pQtyGoodLogType);

Below is my JavaScript code:

/// <reference path="../Scripts/jquery-1.4.1-vsdoc.js" />
/// <reference path="json.js" />

Date.prototype.toMSJSON = function () {
  var date = '\\\/Date(' + this.getTime() + ')\\\/';
  return date;
};

function botaoclick() {
  var date = new Date().toMSJSON();
  var datavar = {
    'pDtTimeStampTransac': date,
    'pIDResource': 1,
    'pQty': 1
  };
  $.ajax(
  {
    type: "POST",
    contentType: "application/json; charset=utf-8",
    url: "http://desk01:9876/ShopFloorService/script/GoodRegister",
    dataType: "json",
    data: JSON.stringify(datavar),
    //data: '{"pDtTimeStampTransac":date, "pIDResource":"teste", "pQty":"3"}',
    error: jqueryError,
    success: function (msg) {
      alert("back");
      var divForResult = document.getElementById("test");
      divForResult.innerHTML = "Result: <b>" + msg.d + "</b>";
    }
  }
  )
}

function jqueryError(request, status, error) {
  alert(request.responseText + " " + status + " " + error);
}

My first problem is that I keep getting a date serialization error:

{"ExceptionDetail":{"HelpLink":null,"InnerException":{"HelpLink":null,"InnerException":{"HelpLink":null,"InnerException":null,"Message":"DateTime content '\\\/Date(1292616078638)\\\/' does not start with '\\\/Date(' and end with ')\\\/' as required for JSON.","StackTrace":"   at System.Runtime.Serialization.Json.JsonReaderDelegator.ParseJsonDate(String originalDateTimeValue)\u000d\u000a   at 

It says it doesn’t start/end the way it’s starting and ending.

My second question is: Will I have to get ride of the enumerator, or is there a way to send it?

Answer 1

I pulled out a lot of hair and shed plenty a tear over this but this worked. I modified the date formatting in your toMSJSON function. WCF accepts this format which I realised thanks to Rick Strahl.

Date.prototype.toMSJSON = function () {
    var date = '/Date(' + this.getTime() + ')/'; //CHANGED LINE
    return date;
};

You also need to convert the dates to UTC time or you get all kinds of funny stuff, so:

  var dt = ...;
  var dt1 = new Date(Date.UTC(dt.getFullYear(), dt.getMonth(), dt.getDate(),   dt.getHours(), dt.getMinutes(), dt.getSeconds(), dt.getMilliseconds()));
  var wcfDateStr = dt1.toMSJSON();

Hope this helps.