当点击我的ListView上的项目时，我想让另一个不同的模板出现在它下面。我已经在Window.Resources中定义了模板，我想在单击项目时更改ItemTemplate，添加新项目并将其更改为默认模板，但是我使用listView作为ItemsSource，它只显示一个模板而且只是因为（现在） ）它们在绑定中都是相同的。我该怎么办？
代码：
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
List<TransactionItem> item = new List<TransactionItem>();
item.Add(new TransactionItem() { category="Deska", index="2", name="Topielec"});
List<object> transactions = new List<object>();
transactions.Add(new Transaction() { name = "Maciek", surname = "Chludzinski", begin = "Dzisiaj 20:14", end = "Dzisiaj 21:14", price = "240 zł", remain = "42 minuty", items = item });
obMainListBinding.ItemTemplate = (DataTemplate)this.FindResource("LessClientTemplate");
MessageBox.Show(obMainListBinding.ItemTemplate.DataTemplateKey.ToString());
transactions.Insert(1, new Transaction() { name = "jhadf", surname = "Chludzhadfi", begin = "Dhad:14", end = "Dzisiajah", price = "240 zł", remain = "42 minuty"});
obMainListBinding.ItemTemplate = (DataTemplate)this.FindResource("BasicTransactionTemplate");
obMainListBinding.ItemsSource = transactions;
}
public class Transaction
{
public string name { get; set; }
public string surname { get; set; }
public string begin { get; set; }
public string end { get; set; }
public string remain { get; set; }
public string price { get; set; }
public List<TransactionItem> items { get; set; }
}
public class TransactionItem
{
public string category { get; set; }
public string index { get; set; }
public string name { get;set; }
}
public class LessTransaction
{
public string name { get; set; }
public string surname { get; set; }
public string begin { get; set; }
public string end { get; set; }
public string remain { get; set; }
public string price { get; set; }
}
}
XAML：
<Window
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" x:Class="SurfManager.MainWindow"
Title="MainWindow" Height="524.5" Width="1078">
<Window.Triggers>
<EventTrigger RoutedEvent="FrameworkElement.Loaded"/>
</Window.Triggers>
<Window.Resources>
<DataTemplate x:Key="BasicTransactionTemplate">
<Grid MaxHeight="50">
<Grid.RowDefinitions>
<RowDefinition Height="41*"/>
<RowDefinition Height="42*"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="0*"/>
<ColumnDefinition Width="192*"/>
<ColumnDefinition Width="234*"/>
<ColumnDefinition Width="189*"/>
<ColumnDefinition Width="443*"/>
</Grid.ColumnDefinitions>
<Label Name="Name" Content="{Binding name}" Grid.RowSpan="1" Grid.Column="1" Grid.ColumnSpan="1" />
<Label Name="Surname" Content="{Binding surname}" Grid.Row="1" Grid.Column="1" Grid.ColumnSpan="1"/>
<Label Name="Begin" Content="{Binding begin}" Grid.Column="2"/>
<Label Name="End" Content="{Binding end}" Grid.Row="1" Grid.Column="2"/>
<Label Name="Remain" Content="{Binding remain}" Grid.Column="3"/>
<Label Name="Price" Content="{Binding price}" Grid.Row="1" Grid.Column="3"/>
<ListView Name="lvItems" ItemsSource="{Binding items}" Grid.Column="4" Grid.RowSpan="2">
<ListView.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding category}" />
<TextBlock Text=", Nr" />
<TextBlock Text="{Binding index}" />
<TextBlock Text="{Binding name}" />
</StackPanel>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</Grid>
</DataTemplate>
<DataTemplate x:Key="LessClientTemplate">
<Grid MaxHeight="50">
<Grid.RowDefinitions>
<RowDefinition Height="41*"/>
<RowDefinition Height="42*"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="0*"/>
<ColumnDefinition Width="192*"/>
<ColumnDefinition Width="234*"/>
<ColumnDefinition Width="189*"/>
<ColumnDefinition Width="443*"/>
</Grid.ColumnDefinitions>
<Label Name="Name" Content="{Binding name}" Grid.RowSpan="1" Grid.Column="1" Grid.ColumnSpan="1" />
<Label Name="Surname" Content="{Binding surname}" Grid.Row="1" Grid.Column="1" Grid.ColumnSpan="1"/>
<Label Name="Begin" Content="{Binding begin}" Grid.Column="2"/>
<Button Name="End" Content="{Binding end}" Grid.Row="1" Grid.Column="2"/>
</Grid>
</DataTemplate>
</Window.Resources>
<Grid>
<TabControl>
<TabItem Header="Obecne Wypożyczenia" Background="#FFF40AFF" Foreground="Black" BorderBrush="#FF8C8E94" OpacityMask="White">
<Grid Background="#FFE5E5E5">
<Grid.ColumnDefinitions>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition/>
</Grid.RowDefinitions>
<ListView Name="obMainListBinding" BorderThickness="0" ItemTemplate="{StaticResource BasicTransactionTemplate}">
<ListView.Resources>
<Style TargetType="ListViewItem">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ListViewItem">
<Border Background="{TemplateBinding Background}">
<ContentPresenter />
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ListView.Resources>
</ListView>
</Grid>
</TabItem>
<TabItem Header="Baza Klientow">
<Grid Background="#FFE5E5E5">
<ListView BorderThickness="0" >
<ListViewItem Height="66" Background="Red">
<Grid Background="Black" >
<Grid.ColumnDefinitions>
<ColumnDefinition Width="0*"/>
<ColumnDefinition Width="0*"/>
<ColumnDefinition Width="0*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="0*"/>
<RowDefinition Height="0*"/>
<RowDefinition Height="0*"/>
</Grid.RowDefinitions>
</Grid>
</ListViewItem>
</ListView>
</Grid>
</TabItem>
<TabItem Header="TabItem" HorizontalAlignment="Left" Height="35.293" VerticalAlignment="Top" Width="57.32" Margin="-2,-2,0,-13.333">
<Button Content="Button" Height="100" Margin="430,174,430,173"/>
</TabItem>
</TabControl>
答案 0 :(得分：1)
您可以尝试使用ItemTemplateSelector属性：
How do I use a ItemTemplateSelector together with a HeaderTemplate in a WPF ListView?
和（或）触发器更改模板：
How to change control template from Style.Triggers
修改
要使用TemplateSelector，您可以在项目上添加一些虚拟属性（或包装它们），以便您从旧项目中识别新项目。
...
public Int32 Generation
{
get ...
}
public class GenerationTypeSelector : DataTemplateSelector
{
public override DataTemplate SelectTemplate(object item, DependencyObject container)
{
var transaction = (TransactionItem)item;
if (transaction .Generation == 0)
return Gen0Template;
else
return Gen1Template;
}
}