SIPSorcery.DialPlanWizard.DeleteDialPlanProvider C# (CSharp) Method

        private void DeleteDialPlanProvider(object sender, System.ComponentModel.CancelEventArgs e)
        {
            SIPDialplanProvider providerEntry = m_providersDataGrid.SelectedItem as SIPDialplanProvider;
            MessageBoxResult confirmDelete = MessageBox.Show("Press Ok to delete Dial Plan Provider " + providerEntry.ProviderName + ".", "Confirm Delete", MessageBoxButton.OKCancel);
            if (confirmDelete == MessageBoxResult.OK)
            {
                e.Cancel = true;
                m_riaContext.SIPDialplanProviders.Remove(providerEntry);
                m_riaContext.SubmitChanges(SubmitComplete, null);
            }
            else
            {
                e.Cancel = true;
            }
        }