Question

I think something must not be correct with the serialization. My class is:

[DataContract]
public class User
{
    [DataMember]
    public int id { get; set; }
    [DataMember]
    public string user_id { get; set; }
    ...

    public User() { }

    public User(int id, string user_id, ...)
    {
        this.id = id;
        this.user_id = user_id;
        ...
    }
}

[DataContract]
public class UserCollection
{
    [DataMember]
    public List<User> users { get; set; }

    [DataMember]
    public int count { get; set; }

    [DataMember]
    public int page { get; set; }

    public UserCollection() { }

    public UserCollection(List<User> users, int count, int page)
    {
        this.users = users;
        this.count = count;
        this.page = page;
    }
}

The API call:

    [WebGet(UriTemplate = "?promotion_id={promotion_id}&page={page}&format={format}")]
    public UserCollection GetAllUsers(string promotion_id, string page, string format)
    {
        if (string.Equals("json", format, StringComparison.OrdinalIgnoreCase))
            WebOperationContext.Current.OutgoingResponse.Format = WebMessageFormat.Json;

        UserFactory factory = new UserFactory();
        return factory.GetUsersByPromotionID(int.Parse(promotion_id), (int.Parse(page) - 1) * 50, 50);
    }

The generated source:

<UserCollection xmlns="http://schemas.datacontract.org/2004/07/API.Library.Resources" xmlns:i="http://www.w3.org/2001/XMLSchema-instance"><count>0</count><page>0</page><users/></UserCollection>

It doesn’t display the xml on the page because it says the response type is text/html. Any ideas?

Answer 1

What kind of client are you using to invoke the web service?

You could try

WebOperationContext.Current.OutgoingResponse.ContentType = "text/xml";