How to check if one path is a child of another path?

Question

How to check if one path is a child of another path?
Just checking for substring is not a way to go, because there can items such as . and .., etc

Answer 1

In C# you can do it like this:

string cp = Path.GetFullPath(childPath);
string pp = Path.GetFullPath(parentPath);

if(pp.StartsWith(cp))
    return true;
else
    return false;