原文:C# WPF DataGrid 分组（Group）

效果如图，每个列的名字可以自定义。我随便用了”File”和”Attachment Name”。 

在Window的Resources里面设置Style, GroupHeaderStyle：

        <Style x:Key="GroupHeaderStyle" TargetType="{x:Type GroupItem}">

            <Setter Property="Template">

                <Setter.Value>

                    <ControlTemplate TargetType="{x:Type GroupItem}">

                        <Expander IsExpanded="True">

                            <Expander.Header>

                                <TextBlock Text="{Binding Path=Name}"/>

                            </Expander.Header>

                            <ItemsPresenter />

                        </Expander>

                    </ControlTemplate>

                </Setter.Value>

            </Setter>

        </Style>

把这个Style应用到DataGrid上面：

            <DataGrid.GroupStyle>

                <GroupStyle ContainerStyle="{StaticResource GroupHeaderStyle}">

                    <GroupStyle.Panel>

                        <ItemsPanelTemplate>

                            <DataGridRowsPresenter/>

                        </ItemsPanelTemplate>

                    </GroupStyle.Panel>

                </GroupStyle>

            </DataGrid.GroupStyle>

整体xaml文件：

<Window x:Class="DataGridGroupDeamon.MainWindow"

        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

        Title="MainWindow" Height="350" Width="525">

    <Window.Resources>

        <Style x:Key="GroupHeaderStyle" TargetType="{x:Type GroupItem}">

            <Setter Property="Template">

                <Setter.Value>

                    <ControlTemplate TargetType="{x:Type GroupItem}">

                        <Expander IsExpanded="True">

                            <Expander.Header>

                                <TextBlock Text="{Binding Path=Name}"/>

                            </Expander.Header>

                            <ItemsPresenter />

                        </Expander>

                    </ControlTemplate>

                </Setter.Value>

            </Setter>

        </Style>

    </Window.Resources>

    <Grid>

        <DataGrid x:Name="dataGrid1"  AutoGenerateColumns="False" Margin="10">

            <DataGrid.GroupStyle>

                <GroupStyle ContainerStyle="{StaticResource GroupHeaderStyle}">

                    <GroupStyle.Panel>

                        <ItemsPanelTemplate>

                            <DataGridRowsPresenter/>

                        </ItemsPanelTemplate>

                    </GroupStyle.Panel>

                </GroupStyle>

            </DataGrid.GroupStyle>

            <DataGrid.Columns>

                <DataGridTextColumn Header="File" Binding="{Binding Name}"/>

                <DataGridTextColumn Header="Attachment Name" Binding="{Binding Sex}"/>

            </DataGrid.Columns>

        </DataGrid>

    </Grid>

</Window>

数据准备文件：

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Data;

using System.Windows.Documents;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Imaging;

using System.Windows.Navigation;

using System.Windows.Shapes;

using System.Collections.ObjectModel;

using System.ComponentModel;

namespace DataGridGroupDeamon

{

    /// <summary>

    /// MainWindow.xaml 的交互逻辑

    /// </summary>

    public partial class MainWindow : Window

    {

        ObservableCollection<Model> data = new ObservableCollection<Model>();

        public MainWindow()

        {

            InitializeComponent();

            dataGrid1.ItemsSource = data;

            for (int i = 0; i < 10; i++)

            {

                Model m = CreateModel("张" + i, i / 2 + "年级", (i % 2 == 0 ? "女" : "男"));

                data.Add(m);

            }

            ICollectionView vw = CollectionViewSource.GetDefaultView(data);

            vw.GroupDescriptions.Add(new PropertyGroupDescription("Category"));

        }

        private Model CreateModel(string name, string cate, string sex)

        {

            Model model = new Model();

            model.Name = name;

            model.Category = cate;

            model.Sex = sex;

            return model;

        }

    }

    public class Model

    {

        public string Name

        {

            get;

            set;

        }

        public string Category

        {

            get;

            set;

        }

        public string Sex

        {

            get;

            set;

        }

    }

}