How to BitConverter.GetBytes() return 2 digits only

EngrImad

Hello every one simple code as follow

Dim MyInt As Int16 = 12
Dim result As Byte() =BitConverter.GetBytes(MyInt)
Console.WriteLine(BitConverter.ToString(result).Length)
Console.WriteLine(BitConverter.ToString(result))

this will return as follow 5 0C-00 Just I want to get 2 0C (length 2 only) and return (0C) only I try to change "MyInt" Declare type from Int16 to all available types but did not work, also i dont need to subtract result as string, i need result as byte() type any advise please ? I am using VS2019 thanks in advance

Lost User

It really depends on what you are trying to do, and why you need to convert a number to a hexadecimal string. You could just use the 'X' format string to print the value, which would give you the correct answer.

EngrImad

I solved like follows:-

Dim MyInt As Int16 = 12
Dim result (0) As Byte
result (0) = Convert.ToByte(MyInt)
Console.WriteLine(BitConverter.ToString(result))

thanks everyone again

Dave Kreskowiak

An int16 (or 'short') is a two-byte value. Intel processors are "little-endian", meaning the last byte (least significant) is stored first and the first byte (most significant) is stored last. In your example, your two byte value, (12) 0x000C, is stored in memory like this: 0x0C, 0x00. So that's why you're getting the bytes in the order you are. BitConverter is returning the bytes in the order they appear in memory. If you were running the exact same code on a processor that is big-endian, the bytes would show up in the array in the order opposite of what you're seeing now. Now, having said all that, if you're looking for just getting a string for the hexadecimal representation of your value, all you have to do is this:

Dim myInt As Int16 = 12
result = String.Format("X", myInt)

If you're dealing with values that will never be greater than 255, why are you using an Int16? Why not just use Byte instead?

Asking questions is a skill CodeProject Forum Guidelines Google: C# How to debug code Seriously, go read these articles.
Dave Kreskowiak