private void setProperty() { IBiometricNET.CBM_Properties cbmProperty = new IBiometricNET.CBM_Properties(); cbmProperty.iTemplateType = IBiometricNET.CBM_PK_MAT_NORM; bool l_ret_value = IBNET.SetProperty(ref cbmProperty); if (l_ret_value) { } else { MessageBox.Show("SetProperty Fail"); } }