/// <summary>
 /// Opens key files edit dialog.
 /// </summary>
 /// <param name="sender"></param>
 /// <param name="e"></param>
 private void buttonEditDiskKeyFiles_Click(object sender, EventArgs e)
 {
     KeyFilesDialog kfd = new KeyFilesDialog();
     kfd.KeyFiles = diskKeyFilesList[listBoxDisks.SelectedIndex];
     if (kfd.ShowDialog() == System.Windows.Forms.DialogResult.OK)
         diskKeyFilesList[listBoxDisks.SelectedIndex] = kfd.KeyFiles;
     kfd = null;
 }
 private void buttonEditContainerKeyFiles_Click(object sender, EventArgs e)
 {
     // open new key files dialog with existing key files
     KeyFilesDialog kfd = new KeyFilesDialog(containerKeyFilesList[listBoxContainerFiles.SelectedIndex]);
     // if the user edited something (dialog closed with save/OK) overwrite old key files list
     if (kfd.ShowDialog() == System.Windows.Forms.DialogResult.OK)
         containerKeyFilesList[listBoxContainerFiles.SelectedIndex] = kfd.KeyFiles;
     kfd = null;
 }