How to force ASP.NET Web API to return JSON or XML data based on my input?

Question

I try to get the output XML or JSON data based on my input. I used the below WEB API code but not able to exact output.

public string Get(int id)
{
    if (G         


        

Answer 1

What you are trying to do will not work in a multi-threaded environment. You cannot add to and remove from the formatters collection on a per-request basis. Here is a better way of accomplishing what you want.

public HttpResponseMessage Get(int id)
{
    Foo foo = new Foo();
    var content = new ObjectContent(foo,
                    ((id == 1) ? Configuration.Formatters.XmlFormatter :
                                Configuration.Formatters.JsonFormatter));
    return new HttpResponseMessage()
    {
         Content = content
    };
}