This extension class is useful when you want to create a stream from some bytes of directly from a string
public static class StreamExtender { /// <summary> /// Create a stream from an array of bytes /// </summary> /// <param name="streamBytes">Bytes source foe the stream</param> /// <returns></returns> public static MemoryStream CreateStreamFromBytes(this byte[] streamBytes) { var stream = new MemoryStream(); stream.Write(streamBytes, 0, streamBytes.Length); stream.Seek(0, 0); return stream; } /// <summary> /// Create a stream from a string /// </summary> /// <remarks>Useful for unit testing file storage</remarks> /// <param name="contents">The contents to be placed in the stream</param> /// <returns>A memory stream with the string as contents</returns> public static MemoryStream CreateStreamFromString(this string contents) { byte[] encodedStreamBytes = Encoding.UTF8.GetBytes(contents); var stream CreateStreamFromBytes(encodedStreamBytes); return stream; } }