C# WPF DataGrid 分组（Group）

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

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;        }    }}

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