Question

I am making a forms application is Visual C#. I have a textbox where a user must enter a number and a uppercase letter, example “9D”.

What I need to do is put that letter into a byte array as a byte…so in my byte array it would:

array[index] = 0x9D

I know that the textbox class represents the 9D as a string. I am confused on how to make it into a literal byte (9D) and stick it in the array.

New to .Net so any help would be appreciated. I’ve looked at the System.Convert class and don’t see anything I can use.

Answer 1

Use Byte.Parse(string, NumberStyles):

byte b = Byte.Parse(text, NumberStyles.HexNumber);

Or Byte.TryParse(string, NumberStyles, IFormatProvider, out Byte) to more gracefully handle invalid input.