Question

I’m trying to make a call to a JSON ASP.NET web service with .NET.

It is ok when I send " { county : 'whatever' } ", but I get a 500 Internal Server error if I try for example " { county : 'It\'s ok' } “.

This is the code:

        request.CookieContainer = container;
        request.Headers.Add("X-Requested-With", "XMLHttpRequest");
        data = " { county : 'It\'s ok' } ";
        buffer = Encoding.UTF8.GetBytes(data);
        request.Method = "POST";
        request.ContentType = "application/json; charset=utf-8";
        request.ContentLength = buffer.Length;
        request.Accept = "application/json, text/javascript, */*";

        using (Stream requestStream = request.GetRequestStream())
            requestStream.Write(buffer, 0, buffer.Length);

        // 500 Internal server error if i use { county : 'It\'s ok' }
        response = (HttpWebResponse)request.GetResponse();

        String ss;
        using (StreamReader sr = new StreamReader(response.GetResponseStream()))
            ss = sr.ReadToEnd();

I’ve found some posts with examples but I cannot make it work:

" { county : \"whatever\" } " and " { \"county\" : \"whatever\" } " also works.

But either of " { county : \"It's ok\" } ", " { county : \"It\'s ok\" } " or any other combination that contains a single quote in the variable work.

How can I send a single quote inside a JSON call?

Kind regards.

Answer 1

It’s because your example do not contain valid JSON.

You can use http://www.jsonlint.com to validate any JSON strings.

ALL keys and string values should be surrounded by double qoutes.

A valid JSON string would be:

{ "county" : "It's ok" }