string.Remove doesnt work [duplicate]

Answer 1

(I'm sure this is a duplicate, but I can't immediately find one.)

Strings in .NET are immutable. Methods like string.Remove, string.Replace etc don't change the contents of the existing string - they return a new string.

So you want something like:

s = s.Remove(0, 15);

Or alternatively, just use Substring:

s = s.Substring(15);