WPF DataGrid分组和排序

之前一直用的Dev的GridControl，控件自带分组排序啥的。今天试了下在wpf自带的Datagrid控件上实现分组和排序。

Datagrid上实现这些功能主要用到CollectionViewSource。CollectionViewSource有对数据进行分组和排序过滤的功能。

        <CollectionViewSource x:Key="cvsList" Source="{Binding List}"
                       >
            <CollectionViewSource.GroupDescriptions>

                <PropertyGroupDescription PropertyName="B"/>
            </CollectionViewSource.GroupDescriptions>
            <CollectionViewSource.SortDescriptions>
                <scm:SortDescription PropertyName="B"  Direction="Descending"/>
                <scm:SortDescription PropertyName="E"/>

            </CollectionViewSource.SortDescriptions>
        </CollectionViewSource>

将数据源绑定到CollectionViewSource，并设置分组列和排序列。倒序可以设置Direction属性为Descending

 <DataGrid ItemsSource="{Binding Source={StaticResource cvsList}}"  />

将CollectionViewSource绑定到DataGrid，并设置DataGrid的GroupStyle，分组功能就可以使用了。

下面是我的例子

<Window x:Class="DataGridTempalte.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:DataGridTempalte"
      xmlns:scm="clr-namespace:System.ComponentModel;assembly=WindowsBase"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">

    <Window.Resources>

        <CollectionViewSource x:Key="cvsList" Source="{Binding List}"
                       >
            <CollectionViewSource.GroupDescriptions>

                <PropertyGroupDescription PropertyName="B"/>
            </CollectionViewSource.GroupDescriptions>
            <CollectionViewSource.SortDescriptions>
                <scm:SortDescription PropertyName="B" Direction="Descending"/>
                <scm:SortDescription PropertyName="E"/>

            </CollectionViewSource.SortDescriptions>
        </CollectionViewSource>
    </Window.Resources>

    <Grid>
        <DataGrid ItemsSource="{Binding Source={StaticResource cvsList}}" AutoGenerateColumns="False">
            <DataGrid.GroupStyle>
                <GroupStyle>
                    <GroupStyle.ContainerStyle>
                        <Style TargetType="{x:Type GroupItem}">
                            <Setter Property="Margin" Value="0,0,0,5"/>
                            <Setter Property="Template">
                                <Setter.Value>
                                    <ControlTemplate TargetType="{x:Type GroupItem}">
                                        <Expander IsExpanded="True" Background="#FF112255" BorderBrush="#FF002255"   BorderThickness="1,1,1,5"
                                                  >
                                            <Expander.Header>
                                                <DockPanel>
                                                    <TextBlock  Foreground="White" FontWeight="Bold" Text="{Binding Path=Name}"/>
                                                </DockPanel>
                                            </Expander.Header>
                                            <Expander.Content>
                                                <ItemsPresenter />
                                            </Expander.Content>
                                        </Expander>
                                    </ControlTemplate>
                                </Setter.Value>
                            </Setter>
                        </Style>
                    </GroupStyle.ContainerStyle>
                </GroupStyle>
            </DataGrid.GroupStyle>
            <DataGrid.Columns>
                <DataGridCheckBoxColumn Header="A" Binding="{Binding A}"/>
                <DataGridTextColumn  Header="B" Binding="{Binding B}"/>
                <DataGridTextColumn  Header="C" Binding="{Binding C}"/>
                <DataGridTextColumn  Header="D" Binding="{Binding D}"/>
                <DataGridTextColumn  Header="E" Binding="{Binding E}"/>
            </DataGrid.Columns>

        </DataGrid>

    </Grid>
</Window>