C#：WPF MVVM中的按钮绑定

因此，我有一个带有ItemsControl的视图，它绑定到某个ObservableCollection。在DataTemplate中，我需要两个按钮。当我尝试将这些按钮绑定到我定义它们的位置，并启动应用程序时，在单击按钮时不会发生任何事情

观点：

<UserControl x:Class="GraphicalUserInterface.Views._2_ToDoList.ToDoListMainView"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
         xmlns:local="clr-namespace:GraphicalUserInterface.Views._2_ToDoList"
         mc:Ignorable="d" 
         d:DesignHeight="300" d:DesignWidth="600"
         DataContext="{Binding Source={StaticResource Locator}, Path=ToDoListMain}">
<Grid>
    <ItemsControl Margin="5" ItemsSource="{Binding ListEntries}">
        <ItemsControl.ItemTemplate>
            <DataTemplate>
                <Border CornerRadius="5" BorderThickness="2" BorderBrush="Black" Height="50" Margin="5">
                    <StackPanel Orientation="Horizontal" Margin="0,5">
                        <Label FontWeight="Bold">Customer:</Label>
                        <Label Content="{Binding Customer}" Margin="0,0,20,0"/>
                        <Label FontWeight="Bold">Trainer:</Label>
                        <Label Content="{Binding Trainer}" Margin="0,0,20,0"/>
                        <Label FontWeight="Bold">Date:</Label>
                        <Label Content="{Binding Date}" Margin="0,0,20,0"/>
                        <Label FontWeight="Bold">RequestType:</Label>
                        <Label Content="{Binding RequestType}" Margin="0,0,20,0"/>
                        <Button Margin="5" Width="100" CommandParameter="{Binding}" Command="{Binding Path=DataContext.ContactBtnClickCommand, RelativeSource= {RelativeSource FindAncestor,AncestorType={x:Type ItemsControl}}}">Contact</Button>
                        <Button Margin="5" Width="100" CommandParameter="{Binding}" Command="{Binding DataContext.AcceptBtnClickCommand, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type ItemsControl}}}">Accept</Button>
                    </StackPanel>
                </Border>
            </DataTemplate>
        </ItemsControl.ItemTemplate>
    </ItemsControl>
</Grid>

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命令属性必须是带有getter的属性。不能绑定到字段

    public RelayCommand<ToDoVM> AcceptBtnClickCommand { get; private set; }
    public RelayCommand<ToDoVM> ContactBtnClickCommand  { get; private set; }

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命令属性必须是带有getter的属性。不能绑定到字段

    public RelayCommand<ToDoVM> AcceptBtnClickCommand { get; private set; }
    public RelayCommand<ToDoVM> ContactBtnClickCommand  { get; private set; }

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尝试将AncestorType更改为

UserControl

。ItemsControl数据上下文是ListEntries，不包含命令。您需要向上引用包含命令的上下文。@EdPlunkett，我刚刚仔细看了一下，打算删除注释尝试将AncestorType更改为

UserControl

。ItemsControl数据上下文是ListEntries，不包含命令。您需要向上引用包含命令的上下文。@EdPlunkett，我只是仔细看了一下，准备删除注释

    public RelayCommand<ToDoVM> AcceptBtnClickCommand { get; private set; }
    public RelayCommand<ToDoVM> ContactBtnClickCommand  { get; private set; }

Command="{Binding DataContext.ContactBtnClickCommand, RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"