Open File and Open Path

 private string MyFileOpen()
 {
     OpenFileDialog openFileDialog = new OpenFileDialog();

            openFileDialog.Filter = "txt files (*.txt)|*.txt";
            if (openFileDialog.ShowDialog() == DialogResult.OK)
            {
                return openFileDialog.FileName;
            }
            else
            {
                return "";
            }
        }

  private string MyPathOpen()
  {
     FolderBrowserDialog folderBrowserDialog = new FolderBrowserDialog();

            if (folderBrowserDialog.ShowDialog() == DialogResult.OK)
            {
                return folderBrowserDialog.SelectedPath;
            }
            else
            {
                return "";
            }
        }