Difference between two strings C#

Question

Lets say I have two strings:

string s1 = \"hello\";
string s2 = \"hello world\";

Is there a way I can get a string s3 = \" world\";

Answer 1

IF (big "if") s1 is always a substring of s2, then you could work with .IndexOf and .Length to find where in s2 that s1 is.