首先,here是以前的帖子,它处理ListBox
AccountListBox数据绑定到我的ObservableCollection<Account>
帐户从AccountsCollection.cs
类。如何通过使用XAML的WPF中的第一个字母来组合ListBoxItems?
所以现在我有一个绑定对象AccountsCollection和一个名为AccountTemplate在资源定义我的ListBox的DataTemplate:
,这里是有关LisBox本身的代码:
<ListBox Name="AccountsListBox"
Margin="12,38,12,41"
HorizontalContentAlignment="Stretch"
ScrollViewer.HorizontalScrollBarVisibility="Disabled"
ItemsSource="{Binding Accounts,
Source={StaticResource ResourceKey=AccountsCollection}}"
ItemTemplate="{StaticResource ResourceKey=AccountTemplate}"
MouseDoubleClick="AccountsListBox_MouseDoubleClick">
</ListBox>
我希望我的清单可以设计为通过开始信件将所有帐户分组,并在清单中显示该信件(另外我想对信件标题应用一些设计)。最终的结果应该是这样的:
感谢所有帮助!
更新:以下是成功实施分组的代码。
<Window x:Class="Gui.Wpf.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:entities="clr-namespace:Entities.Accounts;assembly=Entities"
xmlns:contollers="clr-namespace:Gui.Wpf.Controllers"
xmlns:converters="clr-namespace:Gui.Wpf.Converters"
xmlns:componentModel="clr-namespace:System.ComponentModel;assembly=WindowsBase"
Title="MainWindow"
Width="525"
Height="350" >
<Window.Resources>
<!-- Main window controller -->
<contollers:MainWindowController
x:Key="MainWindowController" />
<!-- Converter for first letter extraction from the account name -->
<converters:FirstLetterConverter x:Key="FirstLetterConv" />
<!-- View source for the AccountsListBox -->
<CollectionViewSource
x:Key="AccountsView"
Source="{Binding Accounts, Source={StaticResource ResourceKey=MainWindowController}}">
<!-- Sorting -->
<CollectionViewSource.SortDescriptions>
<componentModel:SortDescription PropertyName="AccountName" />
</CollectionViewSource.SortDescriptions>
<!-- Grouping -->
<CollectionViewSource.GroupDescriptions>
<PropertyGroupDescription PropertyName="AccountName" Converter="{StaticResource ResourceKey=FirstLetterConv}" />
</CollectionViewSource.GroupDescriptions>
</CollectionViewSource>
<!-- Data template for the type Account -->
<DataTemplate
DataType="{x:Type entities:Account}">
<DockPanel>
<Button
Name="DeleteButton"
DockPanel.Dock="Right"
Margin="3, 1, 3, 1"
VerticalAlignment="Center"
Content="Delete" />
<Button
Name="EditButton"
DockPanel.Dock="Right"
Margin="3, 1, 3, 1"
VerticalAlignment="Center"
Content="Edit" />
<TextBlock
Name="AccountNameTextBlock"
VerticalAlignment="Center"
Text="{Binding AccountName}"
TextWrapping="NoWrap"
TextTrimming="CharacterEllipsis" />
</DockPanel>
</DataTemplate>
<!-- Data template for AccountListBox grouping -->
<DataTemplate x:Key="GroupingHeader">
<TextBlock Text="{Binding Path=Name}" Background="Black" Foreground="White" />
</DataTemplate>
</Window.Resources>
<Grid>
<ListBox
Name="AccountsListBox"
Width="300"
Height="200"
HorizontalAlignment="Center"
VerticalAlignment="Center"
ItemsSource="{Binding Source={StaticResource ResourceKey=AccountsView}}"
HorizontalContentAlignment="Stretch" >
<ListBox.GroupStyle>
<GroupStyle
HeaderTemplate="{StaticResource ResourceKey=GroupingHeader}" />
</ListBox.GroupStyle>
</ListBox>
</Grid>
感谢您的答复。当谈到LINQ时,我无能为力;你可以解释一下: DataContext = s.Select(n => n [0])。Distinct()。ToDictionary(l => l.ToString(),l => s.Where(w => w .StartsWith(l.ToString()))); 我不是说你把它转换成某种东西,我只是非常感谢你能用简单的英语来描述那里发生了什么:)谢谢! – Boris 2010-11-24 12:25:07
linq正在做的事情是: 1)创建所有正在使用的前缀字符的列表('D','A','J','N') 2)创建一个Dictionary>关键是前缀,可枚举是所有匹配前缀的字符串 您可以使用foreach循环等来做同样的事情 –
2010-11-24 12:51:58