Content '\/Date('')\/' does not start with '\/Date(' and end with ')\/' as required for JSON

Question

I want to send a post request to a WCF rest service as you can see:

Guid id;
id = Guid.NewGuid();

var httpWebRequest = (HttpWebRequest)WebRequest.Create(\"h         


        

Answer 1

Use JsonConvert

Instead of using the

string json = new JavaScriptSerializer().Serialize( new {...} );

use

//using Newtonsoft.Json;
string json = JsonConvert.SerializeObject(new {...} );

---

Setting up the DateTime format

Prior to Json.NET 4.5 dates were written using the Microsoft format: "/Date(1198908717056)/". If you want to use this format, or you want to maintain compatibility with Microsoft JSON serializers or older versions of Json.NET, then change the DateFormatHandling setting to MicrosoftDateFormat.

Source: http://www.newtonsoft.com/json/help/html/DatesInJSON.htm

Default Json.NET 4.5 Format

// default as of Json.NET 4.5
string isoJson = JsonConvert.SerializeObject(data);
// { "MyDateProperty":"2009-02-15T00:00:00Z" }

Microsoft Date Format

JsonSerializerSettings microsoftDateFormatSettings = new JsonSerializerSettings
{
    DateFormatHandling = DateFormatHandling.MicrosoftDateFormat
};

string microsoftJson = JsonConvert.SerializeObject(data, microsoftDateFormatSettings);
// { "MyDateProperty":"\/Date(1234656000000)\/" }

JavaScript JSON Format

string javascriptJson = JsonConvert.SerializeObject(data, 
    new JavaScriptDateTimeConverter());
// { "MyDateProperty":new Date(1234656000000)}

---

Solution Code

Here is the full working solution for your question:

JsonSerializerSettings microsoftDateFormatSettings = new JsonSerializerSettings
{
    DateFormatHandling = DateFormatHandling.MicrosoftDateFormat
};

string json = JsonConvert.SerializeObject(new
{
    id = id,
    Subject = "wfwf",
    ViewerCounter = "1",
    Content = "fsdsd",
    SubmitDatatime = "2012/12/12",
    ModifiedDateTime = "2012/12/12",
    PublisherName = "sdaadasd",
    PictureAddress = "adfafsd",
    TypeOfNews = "adsadaad"

}, microsoftDateFormatSettings); // ⇦ Added the format argument here

using (StreamWriter streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
{
    JsonSerializer serializer = new JsonSerializer();
    serializer.Serialize(streamWriter, json);
}