WPF DataGrid分組和排序

之前一直用的Dev的GridControl，控制項自帶分組排序啥的。今天試了下在wpf自帶的Datagrid控制項上實現分組和排序。

Datagrid上實現這些功能主要用到CollectionViewSource。CollectionViewSource有對數據進行分組和排序過濾的功能。

        <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>

將數據源綁定到CollectionViewSource，並設置分組列和排序列。倒序可以設置Direction屬性為Descending

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

將CollectionViewSource綁定到DataGrid，並設置DataGrid的GroupStyle，分組功能就可以使用了。

下麵是我的例子

<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>