Appending to Byte arrays?

Unlike Lists arrays have a predefined size. You cannot increase the size of an array without creating a completely new array.

You can however create a dynamic memory stream using OutputStream.InitializeToBytesArray.

Okay, so they are the same as normal C arrays... thanks.

OutputStream looks perfect for this stuff (which will be why you implemented it) .

I think the autocomplete tooltip for OutputStream.WriteBytes is wrong when it says Length as Int has to be the length - 1. My code works when the StartOffset = 0 and Length = Length.

eg a 32 bit Int has a length of 4 bytes and the values StartOffset = 0 and Length = 4 is correct for that.

If you have a bytes array of 4 bytes then the indices of the array are: 0, 1, 2 and 3. The sentence means that the first byte that will be written is Buffer(0) and the last is Buffer(4 - 1), which is correct.