BExplorer.Shell.FileNameComboBox.AutoComplete C# (CSharp) Method

        private void AutoComplete()
        {
            string path;
            string pattern;
            string[] matches;
            bool rooted = true;

            if (Text == string.Empty || Text.IndexOfAny(new char[] { '?', '*' }) != -1) return;

            path = Path.GetDirectoryName(Text);
            pattern = Path.GetFileName(Text);

            if (path == null || path == string.Empty && ShellView != null && ShellView.CurrentFolder.IsFileSystem && ShellView.CurrentFolder.ParsingName != ShellItem.Desktop.ParsingName)
            {
                path = ShellView.CurrentFolder.FileSystemPath;
                pattern = Text;
                rooted = false;
            }

            matches = Directory.GetFiles(path, pattern + '*');

            for (int n = 0; n < 2; ++n)
            {
                if (matches.Length > 0)
                {
                    int currentLength = Text.Length;
                    Text = rooted ? matches[0] : Path.GetFileName(matches[0]);
                    SelectionStart = currentLength;
                    SelectionLength = Text.Length;
                    break;
                }
                else
                {
                    matches = Directory.GetDirectories(path, pattern + '*');
                }
            }
        }