/// <summary>
        /// Restore your signing keys.
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnRestore_Click(object sender, RoutedEventArgs e)
        {
            string zipfile = string.Empty;

            Microsoft.Win32.OpenFileDialog dlg = new Microsoft.Win32.OpenFileDialog();
            dlg.DefaultExt = ".zip";                   // Default file extension
            dlg.Filter     = "zip files (.zip)|*.zip"; // Filter files by extension
            bool?result = dlg.ShowDialog();

            if (result == true)
            {
                zipfile = dlg.FileName;
                signingData.Restore(zipfile);
                signingData.RefreshScreen();
            }
        }
        public void SigningDataRestoreTest()
        {
            string certName = "BackupTest.zip";

            _signingData.CertPath = _signingData.CertPath + @"temp\";
            _signingData.Restore(certName);
            Assert.True(Directory.Exists(_signingData.CertPath), "Restore directory not created");

            DirectoryInfo di = new DirectoryInfo(_signingData.CertPath);

            FileInfo[] fileList = di.GetFiles();

            foreach (FileInfo file in fileList)
            {
                FileInfo file2 = new FileInfo(_signingData.CertPath + @"..\" + file.Name);
                FileAssert.AreEqual(file, file2, "File isn't the same: " + file.Name);
            }
        }