Base64 encode/decode large file

public string Encode(byte[] data)

public byte[] Decode(string strBase64)

public void EncodeFile(string inputFile, string outputFile)

public void DecodeFile(string inputFile, string outputFile)

public static void EncodeFile(string inputFile, string outputFile)

public static void DecodeFile(string inputFile, string outputFile)

using (StreamReader reader = new StreamReader(inputFile, Encoding.ASCII, true))

using (FileStream outputStream = File.Create(outputFile))

string line = reader.ReadLine();

while (!string.IsNullOrEmpty(line))

if (line.Length > 76)

throw new InvalidDataException("Invalid mime-format base64 file");

byte[] chunk = Convert.FromBase64String(line);

outputStream.Write(chunk, 0, chunk.Length);

line = reader.ReadLine();

}

outputStream.Close();

}

reader.Close();

}

}