Given full path, check if path is subdirectory of some other path, or otherwise

Question

I have 2 strings - dir1 and dir2, and I need to check if one is sub-directory for other. I tried to go with Contains method:

dir1.contains(dir2);
         


        

Answer 1

string path1 = "C:\test";
string path2 = "C:\test\abc";

var root = Path.GetFullPath(path1);
var secondDir = Path.GetFullPath(path2 + Path.AltDirectorySeparatorChar);

if (!secondDir.StartsWith(root))
{
}

Path.GetFullPath works great with paths, like: C:\test\..\forbidden\