s-5_1_1.cs

[DataContract]
public class Result
{
    [DataMember]
    public bool Success { get; set; }
}
 
[DataContract]
public class SomeWorkParams
{
  [DataMember]
  public int Param1 { get; set; }
 
  [DataMember]
  public string Param2 { get; set; }
}
 
[ServiceContract]
public interface IMyServiceSample
{
  [OperationContract]                               //soap xml
  [WebGet(ResponseFormat = WebMessageFormat.Json)]  //json
  Result DoSomeWork(SomeWorkParams request);
  
  // …