WPF中的DataGridTextColumn.Binding

[LQ_DaYuRen]

<DataGridTextColumn Header="test">
                        <DataGridTextColumn.Binding>
                            <MultiBinding Converter="{StaticResource taxPriceMultiValueConvertor}"  UpdateSourceTrigger="PropertyChanged" Mode="TwoWay">
                                <Binding Path="Text" ElementName="ticketType" />
                                <Binding Path="PurchasePrice" />
                                <Binding Path="Text" ElementName="taxRate"/>
                                <Binding Path="TaxPrice" Mode="TwoWay"/>
                            </MultiBinding>
                        </DataGridTextColumn.Binding>
</DataGridTextColumn>

这个多绑定最后的结果在哪里面获得？