How do I Console.WriteLine as hexadecimal?

Answer 1

You need to add a format specifier:

Console.WriteLine("{0:x}", i);

Answer 2

Change the format to {0:x}.

Answer 3

Console.WriteLine ("Hex: {0:X}", nNum);

The X formatter outputs uppercase hex chars. Use a lowercase x for lowercase hex chars.

Answer 4

i.ToString("x");

Answer 5

Sometimes you wonder if people know google exists as that gives you an answer right away.

Try Google.search( "C# integer hex" ); and click the first link.