LambdaDisposable

gistfile1.cs

        private class LambdaDisposable<T> : IDisposable
        {
            private Action<T> dispose_;

            public T Value
            {
                get;
                private set;
            }

            public LambdaDisposable(Func<T> start, Action<T> dispose)
            {
                dispose_ = dispose;
                Value = start();
            }

            public void Dispose()
            {
                dispose_(Value);
            }
        }

        private LambdaDisposable<JsonWriter> Writer(StringBuilder builder)
        {
            return new LambdaDisposable<JsonWriter>(
                () =>
                {
                    var writer = new StringWriter(builder);
                    var jsonWriter = new JsonWriter(writer);
                    jsonWriter.Formatting = Formatting.Indented;
                    jsonWriter.WriteStartObject();
                    jsonWriter.WritePropertyName("rg");
                    jsonWriter.WriteStartArray();
                    return jsonWriter;
                },
                writer =>
                {
                    writer.WriteEndObject();
                    writer.Flush();
                    writer.Close();
                });
            
        }

        public string ObjectsJson(IEnumerable<CBug> bugs, IDictionary<string, object> additionalData)
        {
            var builder = new StringBuilder();
            using (var d = Writer(builder))
            {
                var jsonWriter = d.Value;
                .....
            }
            return builder.ToString();
        }