Converting sbyte[] to byte[]

[Darrel]

I am using binary writer to write an array of bytes to disk. However, my data starts out as an array of sbytes. I am currently type casting each array element in a for loop. Is there a faster method for converting an array of sbytes to an array of bytes?

Thanks,
Darrel

[Justin Rogers]

Array.Copy will often perform conversions for you. However, in this case, it
doesn't
appear that it will, so that won't be an option. The problem is the conversion
is considered
narrowing, since you'll lose any negative numbers. I guess doing a blind memory
copy
wasn't in their plans.

I think Buffer.BlockCopy will do what you need though. You should check it out
and see
if it works in your scenario...

using System;

public class SByteToByte {
private static void Main(string[] args) {
sbyte[] sbytes = new sbyte[10];
byte[] bytes = new byte[10];

for(int i = 0; i < sbytes.Length; i++) {
sbytes[i] = (sbyte) (i - 5);
Console.WriteLine(sbytes[i]);
}
Console.WriteLine();

Buffer.BlockCopy(sbytes, 0, bytes, 0, bytes.Length);
for(int i = 0; i < bytes.Length; i++) {
Console.WriteLine(bytes[i]);
}
Console.WriteLine();

Buffer.BlockCopy(bytes, 0, sbytes, 0, bytes.Length);
for(int i = 0; i < sbytes.Length; i++) {
Console.WriteLine(sbytes[i]);
}
Console.WriteLine();
}
}
--
Justin Rogers
DigiTec Web Consultants, LLC.
Blog: http://weblogs.asp.net/justin_rogers

"Darrel" <Da****@discussions.microsoft.com> wrote in message
news:FC**********************************@microsof t.com...

I am using binary writer to write an array of bytes to disk. However, my data starts out as an array of sbytes. I am currently type casting each array
element in a for loop. Is there a faster method for converting an array of
sbytes to an array of bytes?
Thanks,
Darrel