private void btnControl_Click(object sender, RoutedEventArgs e)
        {
            object         selected = dataGridPrimary.SelectedItem;
            BmsTransaction value    = dataGridPrimary.SelectedItem as BmsTransaction;

            try
            {
                if (bal == null)
                {
                    return;
                }
                bool state = bal.Remove(value);
                if (state)
                {
                    applicationStatus.Text = "Blood Transaction Information Deleted Successfully.";
                    list.Remove(value);
                    dataGridPrimary.Items.Refresh();
                }
                else
                {
                    applicationStatus.Text = "Failed Deleting Blood Transaction Information.";
                }
                //clock.Start();
                applicationStatus.Text = "Ready";
            }
            catch (System.Data.SqlClient.SqlException ex)
            {
                MessageHandler.ShowErrorMessage(ex.Message);
            }

            catch (ValidationException ex)
            {
                MessageHandler.ShowErrorMessage(ex.Message);
            }
            catch (ConnectedDalException ex)
            {
                MessageHandler.ShowErrorMessage(ex.Message);
            }
            catch (Exception ex)
            {
                MessageHandler.ShowErrorMessage(ex.Message);
            }


            //dataGridPrimary.ItemsSource = (List<BmsTransaction>)bal.GetAll();

            //MessageBox.Show(value.BloodBankName);
        }
 void btnDelete_Click(object sender, RoutedEventArgs e)
 {
     try
     {
         if (bal == null)
         {
             return;
         }
         bool state = bal.Remove(FetchData());
         if (state)
         {
             applicationStatus.Text        = "Blood Donor Information Deleted Successfully.";
             applicationStatusMessage.Text = "Blood Donor Information Deleted Successfully.";
         }
         else
         {
             applicationStatus.Text        = "Failed Deleting Blood Donor Information.";
             applicationStatusMessage.Text = "Failed Deleting Blood Donor Information.";
         }
         //clock.Start();
         applicationStatus.Text = "Ready";
         ClearFields();
         EditableFields();
         btnDelete.IsEnabled = false;
     }
     catch (ValidationException ex)
     {
         MessageHandler.ShowErrorMessage(ex.Message);
     }
     catch (ConnectedDalException ex)
     {
         MessageHandler.ShowErrorMessage(ex.Message);
     }
     catch (Exception ex)
     {
         MessageHandler.ShowErrorMessage(ex.Message);
     }
 }