以下是 WPF 应用程序的代码片段，其中我使用 ListView 控件和自定义 ListView 控件，但在 UI 中，自定义 ListView 控件显示类名称，而 List View 控件显示实际数据 [即Class1 的 Text1 属性值]。我知道通过重写 Class1 的 ToString() 我的自定义 ListView 显示实际数据，但我不想重写 ToString()。那么有没有办法更改我的自定义 ListView 的模板，使其工作方式类似于 ListView 控件的工作方式？
MainWindow.xaml：
<Window
x:Class="Swip.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:controls="clr-namespace:Custom.Controls;assembly=Custom.Controls"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:local="clr-namespace:Swip"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
Title="MainWindow"
Width="525"
Height="350"
mc:Ignorable="d">
<Grid d:DataContext="{d:DesignInstance d:Type=local:MainWindowModel}">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="5*" />
<ColumnDefinition Width="5*" />
</Grid.ColumnDefinitions>
<controls:SwipableListView Grid.Column="0" ItemsSource="{Binding Items, Mode=OneWay}">
<controls:SwipableListView.View>
<GridView>
<GridView.Columns>
<GridViewColumn DisplayMemberBinding="{Binding Path=Text1}" Header="11" />
</GridView.Columns>
</GridView>
</controls:SwipableListView.View>
</controls:SwipableListView>
<ListView Grid.Column="1" ItemsSource="{Binding Items, Mode=OneWay}">
<ListView.View>
<GridView>
<GridView.Columns>
<GridViewColumn DisplayMemberBinding="{Binding Path=Text1}" Header="11" />
</GridView.Columns>
</GridView>
</ListView.View>
</ListView>
</Grid>
</Window>
MainWindow.xaml.cs
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
DataContext=new MainWindowModel();
}
}
视图模型
public class MainWindowModel
{
public MainWindowModel()
{
this.Items = new ObservableCollection<Class1>
{
new Class1(1),
new Class1(2),
new Class1(3),
};
this.DeleteCommand = new RoutedCommand("Delete", typeof(MainWindowModel));
}
public ObservableCollection<Class1> Items { get; private set; }
public ICommand DeleteCommand { get; set; }
}
自定义控件模板
<Style TargetType="{x:Type Custom_Control:SwipableListViewItem}">
<Setter Property="SnapsToDevicePixels" Value="true"/>
<Setter Property="Background" Value="Transparent"/>
<Setter Property="IsDeletePossible" Value="{Binding IsDeletePossible, RelativeSource={RelativeSource AncestorType={x:Type Custom_Control:SwipableListView}}}"/>
<Setter Property="FocusVisualStyle" Value="{x:Null}"/>
<Setter Property="OverridesDefaultStyle" Value="true"/>
<Setter Property="Background" Value="{StaticResource Brush_ContainerFill}"/>
<Setter Property="MinHeight" Value="48"/>
<Setter Property="BorderBrush" Value="{StaticResource Brush_ContainerBorder}"/>
<Setter Property="Foreground" Value="{StaticResource Brush_FontReadonly}"/>
<Setter Property="HorizontalContentAlignment" Value="Stretch"/>
<Setter Property="VerticalContentAlignment" Value="Center"/>
<Setter Property="BorderThickness" Value="1,0,1,1"/>
<Setter Property="Padding" Value="16,2" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Custom_Control:SwipableListViewItem}">
<Grid>
<Border x:Name="Bd" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Padding="{TemplateBinding Padding}" SnapsToDevicePixels="true">
<ContentPresenter HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
</Border>
<Button Width="120" HorizontalAlignment="Right" Margin="0,5,5,5" x:Name="PART_DeleteButton" Content="{TemplateBinding ButtonText}" Visibility="Hidden"/>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsSelected" Value="true">
<Setter Property="Background" TargetName="Bd" Value="{StaticResource Brush_ActionBackground}"/>
<Setter Property="Foreground" Value="White"/>
</Trigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsSelected" Value="true"/>
<Condition Property="Selector.IsSelectionActive" Value="false"/>
</MultiTrigger.Conditions>
<Setter Property="Background" TargetName="Bd" Value="{StaticResource Brush_ActionBackground}"/>
<Setter Property="Foreground" Value="White"/>
</MultiTrigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsSelected" Value="true"/>
<Condition Property="IsSelectedForDelete" Value="true"/>
</MultiTrigger.Conditions>
<Setter Property="Visibility" TargetName="PART_DeleteButton" Value="Visible"/>
</MultiTrigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Foreground" Value="{StaticResource Brush_FontReadonly}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
按照 Clemens 的建议 - 通过将 ContentPresenter 更改为 GridViewRowPresenter 解决了该问题。 请参阅：ListView 样式和模板
在 iOS 上的 .net MAUI 应用程序中，我通过将 DataTemplate 内的所有内容包装在 ViewCell 内来解决此问题。我的 ListView 看起来像这样：
<ListView x:Name="SearchListView" SeparatorColor="Black" RowHeight="100" ItemsSource="{Binding ListViewSearchResult, Mode=OneWay}"
>
<ListView.ItemTemplate>
<DataTemplate>
<ViewCell>
<Grid ColumnDefinitions="75,*,120" Padding="3" Margin="10">
<Border
WidthRequest="40"
HeightRequest="40"
StrokeShape="RoundRectangle 20 20"
Stroke="Black"
StrokeThickness="0.1"
Grid.Column="0"
VerticalOptions="Center"
>
<Image Source="{Binding ProfilePic}" Aspect="AspectFill"/>
</Border>
<Label
Grid.Column="1"
HorizontalTextAlignment="Start"
HorizontalOptions="StartAndExpand"
VerticalTextAlignment="Center"
Text="{Binding Name}" FontSize="Medium" TextColor="Black" VerticalOptions="Center"/>
<Button BackgroundColor="CornflowerBlue" Text="Add Friend" Grid.Column="2"
VerticalOptions="Center" HorizontalOptions="Center" HeightRequest="35"
Clicked="AddFriendButton_Clicked" WidthRequest="105" FontAttributes="Bold"/>
</Grid>
</ViewCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>