我是C#和Windows应用程序开发的新手,仅仅是为了学习目的,我正在尝试构建一个Windows 10通用应用程序。我正在试验Hub视图。
以下是我文件的Xaml结构。
<Hub>
<HubSection1>
//SomeData here
</HubSection1>
<HubSection2>
<DataTemplate>
<Grid>
<ListView1>
<CheckBox1>
<ListView2>
//SomeData here
<CheckBox2>
<ListView3>
//SomeData here
<CheckBox3>
<ListView4>
//SomeData here
</ListView1>
</Grid>
</DataTemplate>
</HubSection2>
<HubSection3>
//SomeData here
</HubSection3>
<HubSection4>
//SomeData here
</HubSection4>
</Hub>
所以我要做的是分别使用Checkbox(1,2,3)切换ListView(2,3,4)的可见性。但在我的c#sharp代码中我无法访问我的XAML文件中定义的变量,我在复选框侦听器方法中尝试了FindName(),但它没有帮助。有什么方法可以获取数据或变量或绑定它们吗?
答案 0 :(得分:2)
使用转换器概念:
public class BooleanToVisibility : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
bool isChecked = false;
if (bool.TryParse(value.ToString(), out isChecked))
{
return isChecked ? Visibility.Visible : Visibility.Collapsed;
}
return visibility;
}
public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
{
return value;
}
}
XAML:
<Window x:Class="MyApp.Windows.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:converters="clr-namespace:MyApp.Converters">
<StackPanel>
<StackPanel.Resources>
<converters:BooleanToVisibility x:Key="boolToVisibility"/>
</StackPanel.Resources>
<CheckBox Content="Check to see ListView" Name="changeVisibility"/>
<ListView Visibility="{Binding Path=IsChecked, ElementName=changeVisibility, Converter={StaticResource boolToVisibility}}"/>
</StackPanel>
</Window>