// Create a byte array from a decimal
public static byte[] DecimalToByteArray (decimal src) {
 // Create a MemoryStream as a buffer to hold the binary data
 using (MemoryStream stream = new MemoryStream()) {
  // Create a BinaryWriter to write binary data to the stream
  using (BinaryWriter writer = new BinaryWriter(stream)) {
   // Write the decimal to the BinaryWriter/MemoryStream
   writer.Write(src);
   // Return the byte representation of the decimal
   return stream.ToArray();
  }
 }
}