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C# WPF中的分组

c# wpf

C# WPF中的分组,c#,wpf,datagrid,grouping,C#,Wpf,Datagrid,Grouping,我试图修改一个现有的代码，该代码允许按行添加文章并在需要时删除它们，问题是我试图找到一种方法来对相同类别的文章进行分组。因此，当用户添加DVD类别的新文章时，它将直接添加到该类别（我尝试从这里获取一些想法，但没有成功： 这是数据背后的代码： using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.ComponentModel; using System.C

我试图修改一个现有的代码，该代码允许按行添加文章并在需要时删除它们，问题是我试图找到一种方法来对相同类别的文章进行分组。因此，当用户添加DVD类别的新文章时，它将直接添加到该类别（我尝试从这里获取一些想法，但没有成功：

这是数据背后的代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ComponentModel;
using System.Collections.ObjectModel;
namespace WpfDataGridWithDataTable
{
    public class Article
    {
        public  Article ()
        {

        }
        private int  _modelNumber;
        public int ModelNumber
        {
            get { return _modelNumber; }
            set { _modelNumber = value; OnPropertyChanged("ModelNumber"); }
        }

        private string _modelName;
        public string ModelName
        {
            get { return _modelName; }
            set { _modelName = value; OnPropertyChanged("ModelName"); }
        }

        private decimal  _unitCost;
        public decimal UnitCost
        {
            get { return _unitCost; }
            set { _unitCost = value; OnPropertyChanged("UnitCost"); }
        }

        private string  _description ;
        public string Description
        {
            get { return _description; }
            set { _description = value; OnPropertyChanged("Description"); }
        }


        #region INotifyPropertyChanged Membres

        public event PropertyChangedEventHandler PropertyChanged;
        private void OnPropertyChanged(string propName)
        {
            if (PropertyChanged != null)
            {
                PropertyChanged(this, new PropertyChangedEventArgs(propName));
            }
        }
        #endregion
    }
    public class ListArticles : ObservableCollection<Article > 
    {
        public Article a;
        public ListArticles()
        {

                a = new Article();
                this.Add(a);

        }

    }

}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ComponentModel;
using System.Collections.ObjectModel;
namespace WpfDataGridWithDataTable
{
    public class Article
    {
        public Article()
        {

        }
        private int _modelNumber;
        public int ModelNumber
        {
            get { return _modelNumber; }
            set { _modelNumber = value; OnPropertyChanged("ModelNumber"); }
        }

        private string _modelName;
        public string ModelName
        {
            get { return _modelName; }
            set { _modelName = value; OnPropertyChanged("ModelName"); }
        }

        private decimal _unitCost;
        public decimal UnitCost
        {
            get { return _unitCost; }
            set { _unitCost = value; OnPropertyChanged("UnitCost"); }
        }

        private string _description;
        public string Description
        {
            get { return _description; }
            set { _description = value; OnPropertyChanged("Description"); }
        }


        #region INotifyPropertyChanged Membres

        public event PropertyChangedEventHandler PropertyChanged;
        private void OnPropertyChanged(string propName)
        {
            if (PropertyChanged != null)
            {
                PropertyChanged(this, new PropertyChangedEventArgs(propName));
            }
        }
        #endregion
    }
    public class ListArticles : ObservableCollection<Article>
    {
        public Article a;
        public ListArticles()
        {
            a = new Article();
            this.Add(a);

        }


    }

}

使用系统；
使用System.Collections.Generic；
使用System.Linq；
使用系统文本；
使用系统组件模型；
使用System.Collections.ObjectModel；
命名空间WpfDataGridWithDataTable
{
公共类文章
{
公共物品（）
{
}
专用int_型号；
公共整数型号
{
获取{return\u modelNumber；}
设置{u modelNumber=value；OnPropertyChanged（“modelNumber”）；}
}
私有字符串_modelName；
公共字符串模型名
{
获取{return\u modelName；}
设置{u modelName=value；OnPropertyChanged（“modelName”）；}
}
私人十进制单位成本；
公共十进制单位成本
{
获取{return\u unitCost；}
设置{u unitCost=value；OnPropertyChanged（“unitCost”）；}
}
私有字符串描述；
公共字符串描述
{
获取{return\u description；}
设置{u description=value；OnPropertyChanged（“description”）；}
}
#区域INotifyPropertyChanged Membres
公共事件属性更改事件处理程序属性更改；
私有void OnPropertyChanged（字符串propName）
{
if（PropertyChanged！=null）
{
PropertyChanged（这是新PropertyChangedEventArgs（propName））；
}
}
#端区
}
公共类ListArticles:ObservableCollection
{
公共物品a；
公共物品清单（）
{
a=新条款（）；
本条增补（a）；
}
}
}
下面是XAML代码：

<Window x:Class="WpfDataGridWithDataTable.Window1"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:local="clr-namespace:WpfDataGridWithDataTable"
        Title="Window1" Height="300" Width="300">
    <Grid
        Name="gridPanel">
        <Grid.RowDefinitions>
            <RowDefinition Height="*"></RowDefinition>
            <RowDefinition Height="40"></RowDefinition>
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*"></ColumnDefinition>
            <ColumnDefinition Width="*"></ColumnDefinition>
        </Grid.ColumnDefinitions>
        <DataGrid 
            Grid.Column="0"
            Name="dataGrid1"  
            AutoGenerateColumns="True"  
            CanUserAddRows="True" 
            CanUserDeleteRows="True"
            CanUserResizeColumns="True"
            IsSynchronizedWithCurrentItem="True"
            ItemsSource="{Binding}"/>
        <ListBox 
            Grid.Column="1"
            Name="listBox1" 
            IsSynchronizedWithCurrentItem="True"
            ItemsSource="{Binding}">
            <ListBox.ItemTemplate>
                <DataTemplate DataType="{x:Type local:Article}">
                    <StackPanel    
                        Orientation="Horizontal">
                        <TextBlock 
                            Width="100"
                            Margin="10"  
                            Background="DarkBlue"
                            Foreground="White"
                            FontSize="14"
                            Text="{Binding ModelNumber}"/>
                        <TextBlock 
                            Width="100"
                            Margin="10" 
                            Background="DarkBlue"
                            Foreground="White"
                            FontSize="14"
                            Text="{Binding ModelName}"/>
                    </StackPanel>
                </DataTemplate>
            </ListBox.ItemTemplate>
        </ListBox>
            <Button 
                Grid.Row="1"
                Grid.Column="0"
                HorizontalAlignment="Left"
                Width="100"
                Name="btnAdd"
                Content="Add Item"
                Click="btnAdd_Click">
            </Button>
            <Button
                Grid.Row="1"
                Grid.Column="1"
                HorizontalAlignment="Right"
                Width="100"
                Name="btnDelete"
                Content="Delete Item"
                Click="btnDelete_Click" >
            </Button>
    </Grid>
</Window>

<Window x:Class="WpfDataGridWithDataTable.Window1"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:local="clr-namespace:WpfApplication18"
        Title="Window1" mc:Ignorable="d" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" Height="480" Width="760">

     <Window.Resources>
            <CollectionViewSource x:Key="cvsListArticles" Source="Article">

            <CollectionViewSource.GroupDescriptions>
                <PropertyGroupDescription PropertyName="ModelName"/>
            </CollectionViewSource.GroupDescriptions>
            </CollectionViewSource>
        </Window.Resources> 


    <Grid
        Name="gridPanel">
        <Grid.RowDefinitions>
            <RowDefinition Height="*"></RowDefinition>
            <RowDefinition Height="40"></RowDefinition>
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*"></ColumnDefinition>
            <ColumnDefinition Width="*"></ColumnDefinition>
        </Grid.ColumnDefinitions>
        <DataGrid Name="dataGrid1"  
            AutoGenerateColumns="True"  
            CanUserAddRows="True" 
            CanUserDeleteRows="True"
            CanUserResizeColumns="True"
            IsSynchronizedWithCurrentItem="True"
            ItemsSource="{Binding}" Grid.ColumnSpan="2" >

            <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" Foreground="#FFEEEEEE" BorderThickness="1,1,1,5">
                                            <Expander.Header>
                                                <DockPanel>
                                                    <TextBlock FontWeight="Bold" Text="{Binding Path=Name}" Margin="5,0,0,0" Width="100"/>
                                                </DockPanel>
                                            </Expander.Header>
                                            <Expander.Content>
                                                <ItemsPresenter />
                                            </Expander.Content>
                                        </Expander>
                                    </ControlTemplate>
                                </Setter.Value>
                            </Setter>
                        </Style>
                    </GroupStyle.ContainerStyle>
                </GroupStyle>
            </DataGrid.GroupStyle>
        </DataGrid>

        <Button 
                Grid.Row="1"
                Grid.Column="0"
                HorizontalAlignment="Left"
                Width="100"
                Name="btnAdd"
                Content="Add Item"
                Click="btnAdd_Click">
        </Button>
        <Button
                Grid.Row="1"
                Grid.Column="1"
                HorizontalAlignment="Right"
                Width="100"
                Name="btnDelete"
                Content="Delete Item"
                Click="btnDelete_Click" >
        </Button>
        <Button Content="Group" Grid.ColumnSpan="2" Grid.Row="1" Height="23" HorizontalAlignment="Left" Margin="294,5,0,0" Name="GroupButton" VerticalAlignment="Top" Width="145" Click="GroupButton_Click" />
    </Grid>
</Window>
以及表单背后的代码：

namespace WpfDataGridWithDataTable
{
    /// <summary>
    /// Logique d'interaction pour Window1.xaml
    /// </summary>
    public partial class Window1 : Window
    {
        private ListArticles myList;
        public Window1()
        {
            InitializeComponent();
            myList = new ListArticles();


            this.DataContext = myList;

        }

        private void btnAdd_Click(object sender, RoutedEventArgs e)
        {
            myList.Add(new Article());
        }

        private void btnDelete_Click(object sender, RoutedEventArgs e)
        {
            myList.Remove(this.dataGrid1.SelectedItem as Article);
        }

    }
}

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.Shapes;
using System.Collections.ObjectModel;
using System.ComponentModel;

namespace WpfDataGridWithDataTable
{

    public partial class Window1 : Window
    {
        private ListArticles myList;
        public Window1()
        {
            InitializeComponent();



            myList = new ListArticles();


            this.DataContext = myList;

        }

        private void btnAdd_Click(object sender, RoutedEventArgs e)
        {
            myList.Add(new Article());
        }

        private void btnDelete_Click(object sender, RoutedEventArgs e)
        {
            myList.Remove(this.dataGrid1.SelectedItem as Article);
        }

        private void GroupButton_Click(object sender, RoutedEventArgs e)
        {
            ICollectionView cvsListArticles = CollectionViewSource.GetDefaultView(dataGrid1.ItemsSource);
            if (cvsListArticles != null && cvsListArticles.CanGroup == true)
            {
                cvsListArticles.GroupDescriptions.Clear();
                cvsListArticles.GroupDescriptions.Add(new PropertyGroupDescription("ModelName"));
            }
        }


    }
}

命名空间WpfDataGridWithDataTable
{
/// 
///Logique d'Window1.xaml
/// 
公共部分类Window1:Window
{
私人列表；
公共窗口1（）
{
初始化组件（）；
myList=新的ListArticles（）；
this.DataContext=myList；
}
私有无效btnAdd_单击（对象发送者，路由目标e）
{
添加（新文章（））；
}
私有无效BTN删除\单击（对象发送方，路由目标）
{
myList.Remove（this.dataGrid1.SelectedItem作为文章）；
}
}
}
谢谢您的回答。

我终于解决了这个问题，但我不知道为什么它不起作用。问题出现在将datagrid与CollectionViewSource绑定时的XAML代码中。我将：

 <DataGrid Name="dataGrid1"  
            AutoGenerateColumns="True"  
            CanUserAddRows="True" 
            CanUserDeleteRows="True"
            CanUserResizeColumns="True"
            IsSynchronizedWithCurrentItem="True"
            Grid.ColumnSpan="2" 
            ItemsSource="{Binding Source={StaticResource cvsListArticles}}">
XAML代码：

<Window x:Class="WpfDataGridWithDataTable.Window1"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:local="clr-namespace:WpfDataGridWithDataTable"
        Title="Window1" Height="300" Width="300">
    <Grid
        Name="gridPanel">
        <Grid.RowDefinitions>
            <RowDefinition Height="*"></RowDefinition>
            <RowDefinition Height="40"></RowDefinition>
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*"></ColumnDefinition>
            <ColumnDefinition Width="*"></ColumnDefinition>
        </Grid.ColumnDefinitions>
        <DataGrid 
            Grid.Column="0"
            Name="dataGrid1"  
            AutoGenerateColumns="True"  
            CanUserAddRows="True" 
            CanUserDeleteRows="True"
            CanUserResizeColumns="True"
            IsSynchronizedWithCurrentItem="True"
            ItemsSource="{Binding}"/>
        <ListBox 
            Grid.Column="1"
            Name="listBox1" 
            IsSynchronizedWithCurrentItem="True"
            ItemsSource="{Binding}">
            <ListBox.ItemTemplate>
                <DataTemplate DataType="{x:Type local:Article}">
                    <StackPanel    
                        Orientation="Horizontal">
                        <TextBlock 
                            Width="100"
                            Margin="10"  
                            Background="DarkBlue"
                            Foreground="White"
                            FontSize="14"
                            Text="{Binding ModelNumber}"/>
                        <TextBlock 
                            Width="100"
                            Margin="10" 
                            Background="DarkBlue"
                            Foreground="White"
                            FontSize="14"
                            Text="{Binding ModelName}"/>
                    </StackPanel>
                </DataTemplate>
            </ListBox.ItemTemplate>
        </ListBox>
            <Button 
                Grid.Row="1"
                Grid.Column="0"
                HorizontalAlignment="Left"
                Width="100"
                Name="btnAdd"
                Content="Add Item"
                Click="btnAdd_Click">
            </Button>
            <Button
                Grid.Row="1"
                Grid.Column="1"
                HorizontalAlignment="Right"
                Width="100"
                Name="btnDelete"
                Content="Delete Item"
                Click="btnDelete_Click" >
            </Button>
    </Grid>
</Window>

<Window x:Class="WpfDataGridWithDataTable.Window1"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:local="clr-namespace:WpfApplication18"
        Title="Window1" mc:Ignorable="d" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" Height="480" Width="760">

     <Window.Resources>
            <CollectionViewSource x:Key="cvsListArticles" Source="Article">

            <CollectionViewSource.GroupDescriptions>
                <PropertyGroupDescription PropertyName="ModelName"/>
            </CollectionViewSource.GroupDescriptions>
            </CollectionViewSource>
        </Window.Resources> 


    <Grid
        Name="gridPanel">
        <Grid.RowDefinitions>
            <RowDefinition Height="*"></RowDefinition>
            <RowDefinition Height="40"></RowDefinition>
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*"></ColumnDefinition>
            <ColumnDefinition Width="*"></ColumnDefinition>
        </Grid.ColumnDefinitions>
        <DataGrid Name="dataGrid1"  
            AutoGenerateColumns="True"  
            CanUserAddRows="True" 
            CanUserDeleteRows="True"
            CanUserResizeColumns="True"
            IsSynchronizedWithCurrentItem="True"
            ItemsSource="{Binding}" Grid.ColumnSpan="2" >

            <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" Foreground="#FFEEEEEE" BorderThickness="1,1,1,5">
                                            <Expander.Header>
                                                <DockPanel>
                                                    <TextBlock FontWeight="Bold" Text="{Binding Path=Name}" Margin="5,0,0,0" Width="100"/>
                                                </DockPanel>
                                            </Expander.Header>
                                            <Expander.Content>
                                                <ItemsPresenter />
                                            </Expander.Content>
                                        </Expander>
                                    </ControlTemplate>
                                </Setter.Value>
                            </Setter>
                        </Style>
                    </GroupStyle.ContainerStyle>
                </GroupStyle>
            </DataGrid.GroupStyle>
        </DataGrid>

        <Button 
                Grid.Row="1"
                Grid.Column="0"
                HorizontalAlignment="Left"
                Width="100"
                Name="btnAdd"
                Content="Add Item"
                Click="btnAdd_Click">
        </Button>
        <Button
                Grid.Row="1"
                Grid.Column="1"
                HorizontalAlignment="Right"
                Width="100"
                Name="btnDelete"
                Content="Delete Item"
                Click="btnDelete_Click" >
        </Button>
        <Button Content="Group" Grid.ColumnSpan="2" Grid.Row="1" Height="23" HorizontalAlignment="Left" Margin="294,5,0,0" Name="GroupButton" VerticalAlignment="Top" Width="145" Click="GroupButton_Click" />
    </Grid>
</Window>
你甚至没有属性类别。列表框不支持分组。你尝试过链接中的DataGrid吗？我尝试过在链接中给出的代码中使用上面的代码，但我真的不知道如何进行分解。从添加类别属性和DataGrid开始。发布的代码非常干净。你写了吗？谢谢这不是我的代码，我只是复制并粘贴了它，但我试图用msdn网站中包含的代码对其进行修改。我不明白你说我必须添加datagrid。我发现的问题是当CollectionViewSource与datagrid绑定时。然后将其分解并发布失败的代码。该链接已被删除你需要的一切。