public class OperationResult{    private readonly ConcurrentDictionary
       
         _values = new ConcurrentDictionary
        
         ();    public OperationResult() { }    public OperationResult(bool success) : this(success, String.Empty) { }    public OperationResult(string message) : this(false, message) { }    public OperationResult(bool success, string message) : this()    {        Success = success;        Message = message;    }    public int Count    {        get { return _values.Count; }    }    public T this[string key]    {        get { return _values[key]; }        set { _values[key] = value; }    }    public string Message { get; set; }    public bool Success { get; set; }    public override string ToString()    {        return String.Format("{0}:{1}{2}",             Success ? "PASS" : "FAIL",             Message,             Count == 0 ? String.Empty :                 String.Format("({0})",                     String.Join(";", _values.OrderBy(o => o.Key).Select(s => String.Format("{0}:\"{1}\"", s.Key, s.Value))));    }}