Question

I provide data in server ,and want to send it to client,I use ashx with method ProcessRequest.

    public override void ProcessRequest ( HttpContext context )
    {
       string html="";
       //do sth for get html
         context.Response.Write ( html.ToString() );
    }

in client ,I render page with ajax.
so, I want get a json object in client, how to do it? how to bulid a json in sever side?

Answer 1

Use JSON serialization in .net version >= 3.5.
A little example:

[DataContract]
class Student
{
  [DataMember]
  public string Name { get; set; }
  [DataMember]
  public int Age { get; set; }
}

static void Main(string[] args)
{
  var serializer = new DataContractJsonSerializer(typeof (Student));
  var student = new Student {Name = "Jonh", Age = 18};
  var stream = new MemoryStream();
  serializer.WriteObject(stream, student);
  var jsonString = Encoding.Default.GetString(stream.ToArray());

}

You can find DataContractJsonSerializer in System.Runtime.Serialization.dll