<DataGrid.Columns>

                    <DataGridTemplateColumn >

                        <DataGridTemplateColumn.HeaderTemplate>

                            <DataTemplate>

                                <CheckBox Click="HeaderCellLoad" Content="全选"   IsChecked="False" Unchecked="UnChoice_Checked" Checked="Choice_Checked"></CheckBox>

                                </DataTemplate>

                        </DataGridTemplateColumn.HeaderTemplate>

                        <DataGridTemplateColumn.CellTemplate>

                            <DataTemplate>

                                <CheckBox Click="checkbox_checked" HorizontalAlignment="Center" x:Name="Choices"  IsChecked="{Binding CHOICE, Mode=TwoWay}" VerticalAlignment="Center" />

                            </DataTemplate>

                        </DataGridTemplateColumn.CellTemplate>

                    </DataGridTemplateColumn>

                    <DataGridTextColumn Header="商品条码" Binding="{Binding commodity_barcode}" Width="20*" HeaderStyle="{StaticResource ColumnHeaderStyle}"/>

                    <DataGridTextColumn Header="商品名称" Binding="{Binding commodity_name}" Width="18*" HeaderStyle="{StaticResource ColumnHeaderStyle}"/>

                    <DataGridTextColumn Header="单位" Binding="{Binding commodity_unit}" Width="10*" HeaderStyle="{StaticResource ColumnHeaderStyle}"/>

                    <DataGridTextColumn Header="规格" Binding="{Binding commodity_rule}" Width="10*" HeaderStyle="{StaticResource ColumnHeaderStyle}"/>

                    <DataGridTextColumn Header="售价" Binding="{Binding commodity_retailprice}" Width="10*" HeaderStyle="{StaticResource ColumnHeaderStyle}" />

                    <DataGridTextColumn Header="会员价" Binding="{Binding commodity_memberprice}" Width="10*" HeaderStyle="{StaticResource ColumnHeaderStyle}"/>

                 <DataGridTemplateColumn Header="操作" Width="10*">

                        <DataGridTemplateColumn.CellTemplate>

                            <DataTemplate>

                                <StackPanel Orientation="Horizontal">

                                    <Button Content="修改"  Click="Update_Click" Margin="15,0,5,0" >

                                        <Button.Template>

                                            <ControlTemplate TargetType="Button">

                                                <TextBlock TextDecorations="Underline" Name="btnInput" >

                                            <ContentPresenter />

                                                </TextBlock>

                                            </ControlTemplate>

                                        </Button.Template>

                                        <Button.Style>

                                            <Style TargetType="Button">

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

                                                <Style.Triggers>

                                                    <Trigger Property="IsMouseOver" Value="true">

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

                                                    </Trigger>

                                                </Style.Triggers>

                                            </Style>

                                        </Button.Style>

                                    </Button>

                                    <Button Content="删除" Click="Delete_Click" Margin="15,0,5,0">

                                        <Button.Template>

                                            <ControlTemplate TargetType="Button">

                                                <TextBlock TextDecorations="Underline" Name="btnCancel" >

                                    <ContentPresenter />

                                                </TextBlock>

                                            </ControlTemplate>

                                        </Button.Template>

                                        <Button.Style>

                                            <Style TargetType="Button">

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

                                                <Style.Triggers>

                                                    <Trigger Property="IsMouseOver" Value="true">

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

                                                    </Trigger>

                                                </Style.Triggers>

                                            </Style>

                                        </Button.Style>

                                    </Button>

                                </StackPanel>

                            </DataTemplate>

                        </DataGridTemplateColumn.CellTemplate>

                    </DataGridTemplateColumn>

                </DataGrid.Columns> 

    /// <summary>

        /// Checked UnChecked事件

        /// </summary>

        /// <param name="sender"></param>

        /// <param name="e"></param>

        private void Choice_Checked(object sender, RoutedEventArgs e)

        {

            DataTable dt = ((DataView)CommodityData.ItemsSource).Table;

            foreach (DataRow row in dt.Rows)

            {

                row["CHOICE"] = "";

                GetCount();

            }

        }

        private void UnChoice_Checked(object sender, RoutedEventArgs e)

        {

            DataTable dt = ((DataView)CommodityData.ItemsSource).Table;

            foreach (DataRow row in dt.Rows)

            {

                row["CHOICE"] = "";

                GetCount();

            }

        }

        private void checkbox_checked(object sender, RoutedEventArgs e)

        {

            //首先获取DataGridTemplateColumn所在列

            DataGridTemplateColumn tempColumn = this.CommodityData.Columns[] as DataGridTemplateColumn;

            //然后获取DataGridTemplateColumn单元格元素

            FrameworkElement element = this.CommodityData.Columns[].GetCellContent(this.CommodityData.Items[CommodityData.SelectedIndex]);

            if (element != null)

            {

                //把单元格元素转换为相应的控件，再从该控件中取值

                System.Windows.Controls.CheckBox ck = tempColumn.CellTemplate.FindName("Choices", element) as System.Windows.Controls.CheckBox;

                if (ck.IsChecked == true)

                {

                    DataRowView item = CommodityData.Items[CommodityData.SelectedIndex] as DataRowView;

                    DataRow dr = item.Row;

                    dr["CHOICE"] = "";

                    GetCount();

                }

                else if (ck.IsChecked == false)

                {

                    DataRowView item = CommodityData.Items[CommodityData.SelectedIndex] as DataRowView;

                    DataRow dr = item.Row;

                    dr["CHOICE"] = "";

                    GetCount();

                }

            }

        }