根据用户控件中其他控件中的操作设置CheckBox控件的属性isEnabled

Question

有没有一种简单的方法可以在单击按钮后将属性IsEnabled设置为false CheckBox控件。请注意，按钮在另一个xaml文件中。是否可以在没有代码隐藏的情况下，只在xaml中完成？

主窗口.xaml

<Window
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:local="clr-namespace:WpfApplication1" x:Class="WpfApplication1.MainWindow"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>
        <CheckBox Grid.Row="0" Content="CheckBox" HorizontalAlignment="Left"  VerticalAlignment="Top"/>
        <local:UserControl1 HorizontalAlignment="Left" Margin="31,54,0,0" Grid.Row="1" VerticalAlignment="Top"/>
    </Grid>
</Window>

用户控制1.xaml

<UserControl x:Class="WpfApplication1.UserControl1"
             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" 
             mc:Ignorable="d"
    >
    <Grid>
        <Button Content="Button" HorizontalAlignment="Left" Width="75"/>
    </Grid>
</UserControl>

Answer 1

您必须添加一个bool属性，并使用ToggleButton而不是Button。在这里，我们将CheckBox.IsChecked属性绑定到bool IsDefault属性（随意调用），并设置UserControl.DataContext属性：

<Window x:Class="WpfApplication1.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:local="clr-namespace:WpfApplication1"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>
        <CheckBox Grid.Row="0" Content="CheckBox" IsChecked="{Binding IsDefault}" 
HorizontalAlignment="Left"  VerticalAlignment="Top"/>
        <local:UserControl1 DataContext="{Binding}" HorizontalAlignment="Left" 
Margin="31,54,0,0" Grid.Row="1" VerticalAlignment="Top"/>
    </Grid>
</Window>

在这里，我们将ToggleButton.IsChecked属性绑定到bool IsDefault属性：

<UserControl x:Class="WpfApplication1.UserControl1"
             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" 
             mc:Ignorable="d">
    <Grid>
        <ToggleButton Content="Button" IsChecked="{Binding IsDefault}" 
HorizontalAlignment="Left" Width="75" />
    </Grid>
</UserControl>

既然它们是数据绑定的，更改其中一个将更新另一个。