如果未选中复选框,Wpf将更改按钮的Visiblity

尝试使用此转换器:

public class InvertedBooleanToVisibilityConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (value is bool boolValue) {
                return !boolValue ? Visibility.Visible : Visibility.Collapsed;
            }
            return Visibility.Collapsed;
        }
    
        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }

以及在您的xaml.cs中:

<Button x:Name="Add" Content=" הוספה" Grid.Row="4" Height="30"
            Visibility="{Binding IsChecked, ElementName=Checked, Converter={StaticResource InvertedBoolToVisConverter}}"
            Margin="10,10,10,35" Background="LightBlue" FontSize="15" />

不要忘记将转换器包括在资源中:

    <Window.Resources>
        <BooleanToVisibilityConverter x:Key="BoolToVisConverter" />
        <local:InvertedBooleanToVisibilityConverter x:Key="InvertedBoolToVisConverter" />
</Window.Resources>