【转】强大的DataGrid组件 _分组(Group)

在DataGrid中对数据进行分组能辨析数据的内部信息，反映数据间的依存关系。本文将为大家介绍如何在DataGrid中实施数据的分组。

 

需要了解的知识

1）PagedCollectionView

它代表了一个有关分组、排序、筛选和导航的分页数据集合。

2）PagedCollectionView的GroupDescriptions属性

对分组信息的描述，用于绑定需要分组的字段。

3）DataGrid的RowGroupHeaderStyles属性

用于设置分组标签头的样式。

 

实例

详细的说明在代码注释中给出。

 

MainPage.xaml文件代码：

<UserControl

    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"

    mc:Ignorable="d" xmlns:data="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Data" x:Class="SilverlightClient.MainPage"

    d:DesignWidth="320" d:DesignHeight="480">

    <Grid x:Name="LayoutRoot" Background="White" Width="320" Height="480">

        <data:DataGrid x:Name="dgEmployee" Margin="8,8,8,52" FontSize="14" AutoGenerateColumns="False">

            <data:DataGrid.RowGroupHeaderStyles>

                <!-- 顶层分组样式 -->

                <Style TargetType="data:DataGridRowGroupHeader">

                    <Setter Property="PropertyNameVisibility" Value="Collapsed" />

                    <Setter Property="Background" Value="#99225566" />

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

                    <Setter Property="SublevelIndent" Value="15" />

                </Style>

                <!-- 顶层以下分组样式 -->

                <Style TargetType="data:DataGridRowGroupHeader">

                    <Setter Property="Background" Value="#44225566" />

                </Style>

            </data:DataGrid.RowGroupHeaderStyles>

            <data:DataGrid.Columns>

                <data:DataGridTextColumn Header="工号" Binding="{Binding EmployeeID}"/>

                <data:DataGridTextColumn Header="姓名" Binding="{Binding EmployeeName}"/>

                <data:DataGridTextColumn Header="年龄" Binding="{Binding EmployeeAge}"/>

                <data:DataGridTextColumn Header="部门" Binding="{Binding DepartmentName}"/>

                <data:DataGridTextColumn Header="级别" Binding="{Binding Level}"/>

            </data:DataGrid.Columns>

        </data:DataGrid>

    </Grid>

</UserControl>

MainPage.xaml.cs文件代码：

using System;

using System.Collections.Generic;

using System.Linq;

using System.Net;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Documents;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Animation;

using System.Windows.Shapes;

using System.Windows.Data;

using System.ComponentModel;

 

namespace SilverlightClient

{

    public class Employees

    {

        public int EmployeeID { get; set; }

        public string EmployeeName { get; set; }

        public int EmployeeAge { get; set; }

        public string DepartmentName { get; set; }

        public string Level { get; set; }

    }

 

    public partial class MainPage : UserControl

    {

        public MainPage()

        {

            InitializeComponent();

            this.Loaded += new RoutedEventHandler(MainPage_Loaded);

        }

 

        public List<Employees> GetEmployees()

        {

            List<Employees> returnedValue = new List<Employees>();

            returnedValue.Add(new Employees() { EmployeeID = 1, EmployeeName = "张三", EmployeeAge = 23, DepartmentName = "财务部", Level = "初级" });

            returnedValue.Add(new Employees() { EmployeeID = 2, EmployeeName = "李四", EmployeeAge = 24, DepartmentName = "财务部", Level = "中级" });

            returnedValue.Add(new Employees() { EmployeeID = 3, EmployeeName = "王五", EmployeeAge = 25, DepartmentName = "管理部", Level = "中级" });

            returnedValue.Add(new Employees() { EmployeeID = 4, EmployeeName = "赵六", EmployeeAge = 26, DepartmentName = "管理部", Level = "初级" });

            returnedValue.Add(new Employees() { EmployeeID = 5, EmployeeName = "钱七", EmployeeAge = 27, DepartmentName = "工程部", Level = "中级" });

            returnedValue.Add(new Employees() { EmployeeID = 6, EmployeeName = "孙八", EmployeeAge = 28, DepartmentName = "工程部", Level = "初级" });

            returnedValue.Add(new Employees() { EmployeeID = 7, EmployeeName = "小赵", EmployeeAge = 26, DepartmentName = "财务部", Level = "中级" });

            returnedValue.Add(new Employees() { EmployeeID = 8, EmployeeName = "小钱", EmployeeAge = 28, DepartmentName = "财务部", Level = "高级" });

            return returnedValue;

        }

 

        void MainPage_Loaded(object sender, RoutedEventArgs e)

        {

            PagedCollectionView pcv = new PagedCollectionView(GetEmployees());

            pcv.GroupDescriptions.Add(new PropertyGroupDescription("DepartmentName"));//添加分组信息描述

            pcv.GroupDescriptions.Add(new PropertyGroupDescription("Level"));

            dgEmployee.ItemsSource = pcv;

        }

    }

}

 

最终效果图