隔行换色（WPF DataGrid 标准例子）

 <DataGrid AlternationCount="2">

            <DataGrid.RowStyle>

                <Style TargetType="{x:Type DataGridRow}">

                    <Style.Triggers>

                        <Trigger Property="ItemsControl.AlternationIndex" 

                                 Value="0">

                            <Setter Property="Foreground" Value="Red" />

                        </Trigger>

                    </Style.Triggers>

                </Style>

            </DataGrid.RowStyle>

        </DataGrid>