WPF中DataGrid控件绑定数据源

<DataGrid IsEnabled="False"   ItemsSource="{Binding OpInqueryLine}" x:Name="OperatorWork" CanUserAddRows="False" HorizontalAlignment="Left" Height="312" Margin="47,106,0,0" VerticalAlignment="Top" Width="629">
                <DataGrid.Columns>
                    <DataGridTextColumn Binding="{Binding managerID}" Header="卡号" Width="160"/>
                    <DataGridTextColumn Binding="{Binding cardName}" Header="用户名" Width="160"/>
                    <DataGridTextColumn Binding="{Binding loginTime}" Header="上班时间" Width="160"/>
                    <DataGridTextColumn Binding="{Binding logoutTime}" Header="下班时间" Width="160"/>
                </DataGrid.Columns>
            </DataGrid>