AvaloniaUI绑定到ItemsSource之外的命令
AvaloniaUI绑定到ItemsSource之外的命令
提问于 2021-12-14 11:02:47
我有个问题。我想给一个按钮一个来自ViewModel的命令，它位于ItemsRepeater ItemsSource之外。我需要关于如何进行这种绑定的帮助。
在我的ItemsRepeater按钮
<Button Command={Binding TestClick} Grid.Column="0" HorizontalAlignment="Stretch" Foreground="#6264a7" HorizontalContentAlignment="Center" CornerRadius="0" Background="#2f2f2f" FontSize="20">Details</Button>
我的ItemsRepeater
<ItemsRepeater.ItemTemplate>
<DataTemplate>
<DockPanel Margin="30,0,30,50">
<StackPanel>
<TextBlock Background="#2f2f2f" FontSize="25" Foreground="AntiqueWhite" TextAlignment="Center" Padding="0,8,0,8" Text="{Binding Name}"></TextBlock>
<TextBlock TextAlignment="Center" Background="#2f2f2f" Foreground="AntiqueWhite" Height="40" FontSize="20" Padding="0,8,0,0" Text="{Binding Date}"></TextBlock>
<TextBlock TextAlignment="Center" Background="#2f2f2f" Foreground="AntiqueWhite" Height="40" FontSize="20" Padding="0,2,0,0" Text="{Binding EventType}"></TextBlock>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="50*" />
<ColumnDefinition Width="50*" />
</Grid.ColumnDefinitions>
<Button Command={Binding TestClick} Grid.Column="0" HorizontalAlignment="Stretch" Foreground="#6264a7" HorizontalContentAlignment="Center" CornerRadius="0" Background="#2f2f2f" FontSize="20">Details</Button>
<Button Grid.Column="1" HorizontalAlignment="Stretch" HorizontalContentAlignment="Center" Foreground="#a4373a" CornerRadius="0" Background="#2f2f2f" FontSize="20">Delete</Button>
</Grid>
<ProgressBar Height="10" CornerRadius="0" Value="{Binding TimeLeft}" Minimum="0" Maximum="{Binding DifferenceBetweenDates}" Foreground="{Binding ProgressBarColour}" />
</StackPanel>
</DockPanel>
</DataTemplate>
</ItemsRepeater.ItemTemplate>
</ItemsRepeater>我的ViewModel：
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace Anniverse.ViewModels
{
class MainPanelViewModel : ViewModelBase
{
public string CurrentDate => DateTime.Today.ToString("dd.MM.yyyy");
public ObservableCollection<Event> Events => new Connector().GetEvents();
public void TestClick()
{
Console.WriteLine("Hello test");
}
}
}回答 1
Stack Overflow用户
回答已采纳
发布于 2021-12-15 10:55:26
实现这一目标的最简单方法是绑定到祖先。
Command="{Binding $parent[ItemsRepeater].DataContext.YourCommand}"注意，您需要在视图模型中为命令绑定定义ICommand以使其工作，您可以找到一个示例这里
编辑:我没有意识到这一点，但是直接绑定到方法也应该有效。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/70347801
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