互斥复选框- c#， MVVM
本文关键字：MVVM 复选框 | 更新日期: 2023-09-27 18:02:55
我正在写一个程序，它将有两种可能性:手动日期，或使用计算机/系统时间&日期。
现在我需要创建两个互斥的复选框。当一个被选中时，另一个必须被选中。如何在MVVM中做到这一点?
<CheckBox Name="UseSystemTime" Margin="7" Content="Use System Time and Date settings (Time, Date, DST, Timezone)" IsChecked="{Binding UseSystemTime}"/>
<CheckBox Name="ManualTime" Margin="7" Content="Set settings Manually" IsChecked="{Binding SetSettingsManually}"/>
在XAML中有办法做到这一点吗?
WPF用数据绑定编码互斥复选框
谢谢!
在只有2个checkboxes的情况下，我将只在我的视图模型中为ManualTime引入一个book属性。
public bool IsManualTimeUsed
{
// get;set with property-changed
}
那么在UI中你有两个机会:
机会1: <CheckBox Name="UseSystemTime" Margin="7" Content="Use System Time and Date settings (Time, Date, DST, Timezone)"
IsChecked="{Binding IsManualTimeUsed, Converter{converterNamespace:InverseBoolConverter}}"/>
<CheckBox Name="ManualTime" Margin="7" Content="Set settings Manually"
IsChecked="{Binding IsManualTimeUsed}"/>
，其中InverseBoolConverter看起来像:
public class InverseBoolConverter : MarkupExtension, IValueConverter
{
private static InverseBoolConverter converter;
public InverseBoolConverter()
{
}
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
if (value is bool)
return !((bool) value);
return value;
}
public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
{
throw new NotImplementedException();
}
public override object ProvideValue(IServiceProvider serviceProvider)
{
return converter ?? (converter = new InverseBoolConverter());
}
}
机会2
<CheckBox Name="UseSystemTime" Margin="7" Content="Use System Time and Date settings (Time, Date, DST, Timezone)"
IsChecked="{Binding ElementName=ManualTime, Path=IsChecked, Converter={converterNamespace:InverseBoolConverter}}"/>
<CheckBox Name="ManualTime" Margin="7" Content="Set settings Manually"
IsChecked="{Binding IsManualTimeUsed}"/>
使用与机会1相同的转换器
你可以从IValueConverter接口实现BootToCheckBoxConvertor，并传递ConvertorParameter来选择复选框
http://blogs.msdn.com/b/bencon/archive/2006/05/10/594886.aspx但是复选框的形式更漂亮(更用户友好)-我认为是这样:)我宁愿做与复选框，或者有可能改变单选按钮的形状复选框的形式?有复选标记和所有的想法?:)
你可以为RadioButton创建一个样式，使它看起来像CheckBox:
<Style x:Key="FocusVisual">
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate>
<Rectangle Margin="2" SnapsToDevicePixels="true" Stroke="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}" StrokeThickness="1" StrokeDashArray="1 2"/>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<SolidColorBrush x:Key="OptionMark.Static.Background" Color="#FFFFFFFF"/>
<SolidColorBrush x:Key="OptionMark.Static.Border" Color="#FF707070"/>
<Style x:Key="OptionMarkFocusVisual">
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate>
<Rectangle Margin="14,0,0,0" SnapsToDevicePixels="true" Stroke="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}" StrokeThickness="1" StrokeDashArray="1 2"/>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<SolidColorBrush x:Key="OptionMark.MouseOver.Background" Color="#FFF3F9FF"/>
<SolidColorBrush x:Key="OptionMark.MouseOver.Border" Color="#FF5593FF"/>
<SolidColorBrush x:Key="OptionMark.MouseOver.Glyph" Color="#FF212121"/>
<SolidColorBrush x:Key="OptionMark.Disabled.Background" Color="#FFE6E6E6"/>
<SolidColorBrush x:Key="OptionMark.Disabled.Border" Color="#FFBCBCBC"/>
<SolidColorBrush x:Key="OptionMark.Disabled.Glyph" Color="#FF707070"/>
<SolidColorBrush x:Key="OptionMark.Pressed.Background" Color="#FFD9ECFF"/>
<SolidColorBrush x:Key="OptionMark.Pressed.Border" Color="#FF3C77DD"/>
<SolidColorBrush x:Key="OptionMark.Pressed.Glyph" Color="#FF212121"/>
<SolidColorBrush x:Key="OptionMark.Static.Glyph" Color="#FF212121"/>
<Style x:Key="CheckBoxRadioButtonStyle" TargetType="{x:Type RadioButton}">
<Setter Property="FocusVisualStyle" Value="{StaticResource FocusVisual}"/>
<Setter Property="Background" Value="{StaticResource OptionMark.Static.Background}"/>
<Setter Property="BorderBrush" Value="{StaticResource OptionMark.Static.Border}"/>
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
<Setter Property="BorderThickness" Value="1"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type RadioButton}">
<Grid x:Name="templateRoot" Background="Transparent" SnapsToDevicePixels="True">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Border x:Name="checkBoxBorder" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="1" VerticalAlignment="{TemplateBinding VerticalContentAlignment}">
<Grid x:Name="markGrid">
<Path x:Name="optionMark" Data="F1 M 9.97498,1.22334L 4.6983,9.09834L 4.52164,9.09834L 0,5.19331L 1.27664,3.52165L 4.255,6.08833L 8.33331,1.52588e-005L 9.97498,1.22334 Z " Fill="{StaticResource OptionMark.Static.Glyph}" Margin="1" Opacity="0" Stretch="None"/>
<Rectangle x:Name="indeterminateMark" Fill="{StaticResource OptionMark.Static.Glyph}" Margin="2" Opacity="0"/>
</Grid>
</Border>
<ContentPresenter x:Name="contentPresenter" Grid.Column="1" Focusable="False" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="HasContent" Value="true">
<Setter Property="FocusVisualStyle" Value="{StaticResource OptionMarkFocusVisual}"/>
<Setter Property="Padding" Value="4,-1,0,0"/>
</Trigger>
<Trigger Property="IsMouseOver" Value="true">
<Setter Property="Background" TargetName="checkBoxBorder" Value="{StaticResource OptionMark.MouseOver.Background}"/>
<Setter Property="BorderBrush" TargetName="checkBoxBorder" Value="{StaticResource OptionMark.MouseOver.Border}"/>
<Setter Property="Fill" TargetName="optionMark" Value="{StaticResource OptionMark.MouseOver.Glyph}"/>
<Setter Property="Fill" TargetName="indeterminateMark" Value="{StaticResource OptionMark.MouseOver.Glyph}"/>
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Background" TargetName="checkBoxBorder" Value="{StaticResource OptionMark.Disabled.Background}"/>
<Setter Property="BorderBrush" TargetName="checkBoxBorder" Value="{StaticResource OptionMark.Disabled.Border}"/>
<Setter Property="Fill" TargetName="optionMark" Value="{StaticResource OptionMark.Disabled.Glyph}"/>
<Setter Property="Fill" TargetName="indeterminateMark" Value="{StaticResource OptionMark.Disabled.Glyph}"/>
</Trigger>
<Trigger Property="IsPressed" Value="true">
<Setter Property="Background" TargetName="checkBoxBorder" Value="{StaticResource OptionMark.Pressed.Background}"/>
<Setter Property="BorderBrush" TargetName="checkBoxBorder" Value="{StaticResource OptionMark.Pressed.Border}"/>
<Setter Property="Fill" TargetName="optionMark" Value="{StaticResource OptionMark.Pressed.Glyph}"/>
<Setter Property="Fill" TargetName="indeterminateMark" Value="{StaticResource OptionMark.Pressed.Glyph}"/>
</Trigger>
<Trigger Property="IsChecked" Value="true">
<Setter Property="Opacity" TargetName="optionMark" Value="1"/>
<Setter Property="Opacity" TargetName="indeterminateMark" Value="0"/>
</Trigger>
<Trigger Property="IsChecked" Value="{x:Null}">
<Setter Property="Opacity" TargetName="optionMark" Value="0"/>
<Setter Property="Opacity" TargetName="indeterminateMark" Value="1"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
并像这样使用:
<RadioButton Style="{StaticResource CheckBoxRadioButtonStyle}" />
(我只是使用了默认的CheckBox样式并更改了目标类型)
但是，我强烈建议您使用普通的单选按钮，因为用户对它很熟悉。互斥的复选框可能会让用户觉得很奇怪。