C# BooleantVisibilityConverter,在为真或为空时转换为可见,在为假时折叠
我在三态切换按钮和普通按钮之间进行绑定 这就是我想要实现的目标: 按钮#1如果按钮#2IsChecked=True或Null,则按钮#1可见 如果按钮#2IsChecked=False,则按钮#1折叠 内置BooleanToVisibilityConverter仅在为true时显示该按钮 如果您能帮忙安装转换器,我将不胜感激。C# BooleantVisibilityConverter,在为真或为空时转换为可见,在为假时折叠,c#,wpf,C#,Wpf,我在三态切换按钮和普通按钮之间进行绑定 这就是我想要实现的目标: 按钮#1如果按钮#2IsChecked=True或Null,则按钮#1可见 如果按钮#2IsChecked=False,则按钮#1折叠 内置BooleanToVisibilityConverter仅在为true时显示该按钮 如果您能帮忙安装转换器,我将不胜感激。 谢谢这太简单了。以下IValueConverter返回可见性。当值为true或null时可见: public sealed class BooleanToVisibili
谢谢这太简单了。以下
IValueConverter
返回可见性。当值
为true
或null
时可见:
public sealed class BooleanToVisibilityConverter : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
return value is bool bValue && bValue
|| value == null
? Visibility.Visible
: Visibility.Collapsed;
}
public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
{
return value is Visibility visibility
&& visibility == Visibility.Visible;
}
}
这是可笑的简单。以下IValueConverter
返回可见性。当值
为true
或null
时可见:
public sealed class BooleanToVisibilityConverter : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
return value is bool bValue && bValue
|| value == null
? Visibility.Visible
: Visibility.Collapsed;
}
public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
{
return value is Visibility visibility
&& visibility == Visibility.Visible;
}
}
没有BooleanToVisibilityConverter,只有XAML:
<Window.Resources>
<Style TargetType="Button">
<Setter Property="Visibility"
Value="Visible" />
<Style.Triggers>
<DataTrigger Binding="{Binding ElementName=chk1, Path=IsChecked}"
Value="False">
<Setter Property="Visibility"
Value="Collapsed" />
</DataTrigger>
</Style.Triggers>
</Style>
</Window.Resources>
<Grid>
<Button Content="Button"
HorizontalAlignment="Left"
Margin="34,68,0,0"
VerticalAlignment="Top"
Width="75" />
<CheckBox x:Name="chk1"
Content=" Toggle"
HorizontalAlignment="Left"
Margin="34,29,0,0"
VerticalAlignment="Top"
IsThreeState="True"
IsChecked="True" />
</Grid>
没有BooleantVisibilityConverter,只有XAML:
<Window.Resources>
<Style TargetType="Button">
<Setter Property="Visibility"
Value="Visible" />
<Style.Triggers>
<DataTrigger Binding="{Binding ElementName=chk1, Path=IsChecked}"
Value="False">
<Setter Property="Visibility"
Value="Collapsed" />
</DataTrigger>
</Style.Triggers>
</Style>
</Window.Resources>
<Grid>
<Button Content="Button"
HorizontalAlignment="Left"
Margin="34,68,0,0"
VerticalAlignment="Top"
Width="75" />
<CheckBox x:Name="chk1"
Content=" Toggle"
HorizontalAlignment="Left"
Margin="34,29,0,0"
VerticalAlignment="Top"
IsThreeState="True"
IsChecked="True" />
</Grid>
如果您已经在使用某种类型的viewmodel,这将有助于您将bool绑定到控件:您必须通过实现来实现自定义转换器。BionicCode,是的,但a不知道如何使用ThreeState。添加到目前为止您为这些按钮和可见性提供的代码。这使得人们可以更简单地帮助您。如果您已经在使用某种viewmodel,这将有助于您将布尔绑定到控件:您必须通过实现来实现自定义转换器。BionicCode,是的,但a不知道如何使用ThreeState来实现。添加到目前为止针对这些按钮和可见性的代码。这使人们更容易帮助你。