private void LoadInstances()
        {
            this.Busy        = true;
            this.BusyContent = "Loading instances";

            try
            {
                var response = InstanceService.GetAllDbInstances();
                if (response != null)
                {
                    Instances = new ObservableCollection <string>(response);
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show("Error when loading instances. " + ex.Message, "Load instances", MessageBoxButton.OK, MessageBoxImage.Error);
            }
            finally
            {
                this.Busy = false;
            }
        }