SIPSorcery.DialPlanWizard.DeleteENUM C# (CSharp) Method

        private void DeleteENUM(object sender, System.ComponentModel.CancelEventArgs e)
        {
            SIPDialplanLookup enumEntry = m_enumsDataGrid.SelectedItem as SIPDialplanLookup;
            MessageBoxResult confirmDelete = MessageBox.Show("Press Ok to delete ENUM " + enumEntry.LookupKey + ".", "Confirm Delete", MessageBoxButton.OKCancel);
            if (confirmDelete == MessageBoxResult.OK)
            {
                e.Cancel = true;
                m_riaContext.SIPDialplanLookups.Remove(enumEntry);
                m_riaContext.SubmitChanges(SubmitComplete, null);
            }
            else
            {
                e.Cancel = true;
            }
        }