private void btn_ReadStringFromBDB_Click(object sender, RoutedEventArgs e)
{
var guid = this.tbox_Key.Text;
var key = new DatabaseEntry();
key.Data = Encoding.ASCII.GetBytes(guid);
KeyValuePair <DatabaseEntry, DatabaseEntry> pair = bdb.Get(key);
EMessageBox.Show(Encoding.ASCII.GetString(pair.Value.Data));
}