在WPF数据网格中显示多种类型数据的最佳方法是什么。 例如,类别和产品:
| Product Name | Description | Price | --------------------------------------- IT - category --------------------------------------- Monitors - category --------------------------------------- | Monitor 1 | ... | 100 $ | | Monitor 2 | ... | 99 $ | | Monitor 3 | ... | 120 $ | --------------------------------------- HDD - category --------------------------------------- | Hdd 1 | ... | 50 $ | | Hdd 2 | ... | 45 $ | --------------------------------------- Electronics category --------------------------------------- ...
我想在产品列的顶部显示,并更改类别的模板。 我知道有一个单元格模板选择器,但有没有办法为整行指定模板选择器? 谢谢。
答案 0 :(得分:4)
如果您为数据创建CollectionViewsource
,则可以使用集合PropertyGroupDescription
中的GroupDescriptions
按照您希望的属性对所有数据进行分组。
然后在DataGrid
中,您可以创建GroupStyle
以显示TextBlock
或其他内容,以便将DataGrid
中的所有群组分开。
这是一个完整的工作演示,因为它比解释更容易展示:)
的Xaml:
<Window x:Class="WpfApplication20.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="505" Width="525" Name="UI">
<Window.Resources>
<!--Create CollectionViewSource and set the property you want to group by-->
<CollectionViewSource x:Key="MyItems" Source="{Binding Items, ElementName=UI}">
<CollectionViewSource.GroupDescriptions>
<PropertyGroupDescription PropertyName="Category" />
</CollectionViewSource.GroupDescriptions>
</CollectionViewSource>
</Window.Resources>
<Grid>
<DataGrid ItemsSource="{Binding Source={StaticResource MyItems}}">
<DataGrid.GroupStyle>
<GroupStyle>
<GroupStyle.HeaderTemplate>
<DataTemplate>
<StackPanel>
<!--Name property is the GroupName created by the CollectionViewSource-->
<TextBlock Text="{Binding Path=Name}" Margin="10,0,0,0" FontSize="18" FontWeight="Bold"/>
</StackPanel>
</DataTemplate>
</GroupStyle.HeaderTemplate>
</GroupStyle>
</DataGrid.GroupStyle>
</DataGrid>
</Grid>
</Window>
代码:
namespace WpfApplication20
{
public partial class MainWindow : Window
{
private ObservableCollection<MyDataObject> _items = new ObservableCollection<MyDataObject>();
public MainWindow()
{
InitializeComponent();
Items.Add(new MyDataObject { Category = "IT", ProductName = "Stackoverflow", Description = "Group", Price = "Demo" });
Items.Add(new MyDataObject { Category = "Monitors", ProductName = "Stackoverflow", Description = "Group", Price = "Demo" });
Items.Add(new MyDataObject { Category = "Monitors", ProductName = "Stackoverflow", Description = "Group", Price = "Demo" });
Items.Add(new MyDataObject { Category = "Monitors", ProductName = "Stackoverflow", Description = "Group", Price = "Demo" });
Items.Add(new MyDataObject { Category = "HDD", ProductName = "Stackoverflow", Description = "Group", Price = "Demo" });
Items.Add(new MyDataObject { Category = "HDD", ProductName = "Stackoverflow", Description = "Group", Price = "Demo" });
}
public ObservableCollection<MyDataObject> Items
{
get { return _items; }
set { _items = value; }
}
}
public class MyDataObject
{
public string Category { get; set; }
public string ProductName { get; set; }
public string Description { get; set; }
public string Price { get; set; }
}
}
结果:
覆盖GroupItem
DataGrid
中的ContainerStyle
模板以使用Expander
可能是一个不错的主意,这样您就可以展开折叠组。
示例:
<DataGrid ItemsSource="{Binding Source={StaticResource MyItems}}" CanUserAddRows="False">
<DataGrid.GroupStyle>
<GroupStyle>
<GroupStyle.ContainerStyle>
<Style TargetType="{x:Type GroupItem}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type GroupItem}">
<Expander Name="expander">
<Expander.Header>
<StackPanel >
<TextBlock Text="{Binding Name}" FontWeight="Bold"/>
<TextBlock Text="{Binding ItemCount, StringFormat={}Items: {0}}" FontSize="9" />
</StackPanel>
</Expander.Header>
<ItemsPresenter />
</Expander>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</GroupStyle.ContainerStyle>
</GroupStyle>
</DataGrid.GroupStyle>
</DataGrid>
结果: