Byte Order Question - How to reverse?

[brandoom]

I'm creating a binary file using the binarywriter class. I'm writing decimal numbers to the file, each one as a 4 byte representation.

So, if I wanted to write the decimal number 10523

The hex would be 0x291B.

I need the bytes written to the file in this order:

0x1B 0x29 0x00 0x00

My problem is that using this code:

            byte[] numBuffer = null;
            decvalue = 10523;
            numBuffer = System.Text.Encoding.ASCII.GetBytes(decvalue.ToString("x4"));
            wrtBin.Write(numBuffer);

The bytes are written to the file in this order:

0x29 0x1b 0x00 0x00

What's the best way for me to do this?

[mendhak]

What is the logic you have for this reversal? What if it were a larger number like 0x23bdc5? Would you still just reverse the first two bytes?

[brandoom]

0x23bdc5 should be:

0xC5 0xBD 0x23 0x00

Also... He says that if I use my c# code and do this:

WriteFile( hf, ( BYTE *)&dwSomeDwordValue, sizeof( DWORD ), ... );

That the bytes will be written in the correct order. I have no clue how to do that in c# though.

[mendhak]

Alright, to reverse the array, you can use Array.Reverse(arrayname).

About WriteFile, what language is 'he' talking about? Here is .NET's WriteFile,

http://msdn.microsoft.com/library/de...efiletopic.asp

Maybe you're looking for one of these.