System.Windows.Forms.FileDialog.FileRender.Back C# (CSharp) Méthode

            public bool Back()
            {
                if (prevPathes.Count == 0) return false;

                currentPath = prevPathes.Last();
                prevPathes.RemoveAt(prevPathes.Count - 1);
                SetDirectory(currentPath);
                return true;
            }
            public void SetDirectory(string path)