private void savebtn_Click(object sender, RoutedEventArgs e)
 {
     var isKeyspaceExists = false;
     var dbOperator = new DatabaseOperationsReader();
     var isAvailable = dbOperator.SaveDataToDb(_exportMetadataList, ref isKeyspaceExists);
     if (isAvailable)
     {
         Visibility = Visibility.Hidden;
         var saveSummary = new Summary();
         saveSummary.ShowSummary(_exportMetadataList);
         var win = Window.GetWindow(this);
         var homePage = (HomePage)(win);
         if (homePage != null) homePage.ContentArea.Content = saveSummary;
     }
     else
     {
         MessageBox.Show(!isKeyspaceExists
             ? "This Keyspace doesnot Exists."
             : "This ColumnFamily already exists.");
     }
 }