如何在点击任意按钮时更改按钮的背景颜色？

Question

我有三个按钮。我创建了一个样式，用于所有三个按钮来显示鼠标悬停和按下状态。我需要有逻辑来指示哪个按钮被选中/点击。如果点击按钮，则背景颜色应保持/设置为按下状态，并将其他两个按钮重置为背景颜色以作为正常状态。以下是我拥有的代码。我想知道是否可能在XAML中实现全部或如何在代码后台中完成？谢谢。

<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
x:Class="test3.MainWindow"
x:Name="Window"
Title="MainWindow"
Width="640" Height="480">

<Window.Resources>  
    <Style x:Key="ButtonStyle1" TargetType="{x:Type Button}">
        <Setter Property="BorderThickness" Value="1"/>
        <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
        <Setter Property="HorizontalContentAlignment" Value="Center"/>
        <Setter Property="VerticalContentAlignment" Value="Center"/>
        <Setter Property="Padding" Value="1"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type Button}">
                    <Border x:Name="ButtonBackground" BorderBrush="{TemplateBinding BorderBrush}" SnapsToDevicePixels="true" Background="#FFFFE640">
                        <VisualStateManager.VisualStateGroups>
                            <VisualStateGroup x:Name="CommonStates">
                                <VisualState x:Name="Normal"/>
                                <VisualState x:Name="MouseOver">
                                    <Storyboard>
                                        <ColorAnimationUsingKeyFrames Storyboard.TargetProperty="(Panel.Background).(SolidColorBrush.Color)" Storyboard.TargetName="ButtonBackground">
                                            <EasingColorKeyFrame KeyTime="0" Value="#FFC8B432"/>
                                        </ColorAnimationUsingKeyFrames>
                                    </Storyboard>
                                </VisualState>
                                <VisualState x:Name="Pressed">
                                    <Storyboard>
                                        <ColorAnimationUsingKeyFrames Storyboard.TargetProperty="(Panel.Background).(SolidColorBrush.Color)" Storyboard.TargetName="ButtonBackground">
                                            <EasingColorKeyFrame KeyTime="0" Value="#FFBCAA31"/>
                                        </ColorAnimationUsingKeyFrames>
                                    </Storyboard>
                                </VisualState>
                                <VisualState x:Name="Disabled"/>
                            </VisualStateGroup>
                        </VisualStateManager.VisualStateGroups>
                        <ContentPresenter RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" Margin="0,0,0,4" HorizontalAlignment="Center" VerticalAlignment="Bottom"/>
                    </Border>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsKeyboardFocused" Value="true">
                        </Trigger>
                        <Trigger Property="ToggleButton.IsChecked" Value="true">
                        </Trigger>
                        <Trigger Property="IsEnabled" Value="false">
                            <Setter Property="Foreground" Value="#ADADAD"/>
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

    <Storyboard x:Key="OnMouseOneEnter">
        <ColorAnimationUsingKeyFrames Storyboard.TargetProperty="(Panel.Background).(SolidColorBrush.Color)" Storyboard.TargetName="button_One">
            <EasingColorKeyFrame KeyTime="0" Value="#FFDAC326"/>
        </ColorAnimationUsingKeyFrames>
    </Storyboard>
    <Storyboard x:Key="OnMouseOneLeave">
        <ColorAnimationUsingKeyFrames Storyboard.TargetProperty="(Panel.Background).(SolidColorBrush.Color)" Storyboard.TargetName="button_One">
            <EasingColorKeyFrame KeyTime="0" Value="#FFFFE640"/>
        </ColorAnimationUsingKeyFrames>
        <ColorAnimationUsingKeyFrames Storyboard.TargetProperty="(Panel.Background).(SolidColorBrush.Color)" Storyboard.TargetName="button_Two">
            <EasingColorKeyFrame KeyTime="0" Value="#FF85781C"/>
        </ColorAnimationUsingKeyFrames>
    </Storyboard>
    <Storyboard x:Key="OnMoseOneClick">
        <ColorAnimationUsingKeyFrames Storyboard.TargetProperty="(Panel.Background).(SolidColorBrush.Color)" Storyboard.TargetName="button_One">
            <EasingColorKeyFrame KeyTime="0:0:0.2" Value="#FFDAC326"/>
        </ColorAnimationUsingKeyFrames>
    </Storyboard>
</Window.Resources>

<Grid>
    <StackPanel x:Name="LayoutRoot">
        <Button x:Name="button_One" HorizontalAlignment="Left" Width="90" Height="90"  Content="One" Style="{DynamicResource ButtonStyle1}" Cursor="Hand" Margin="0,0,0,4" />
        <Button x:Name="button_Two" HorizontalAlignment="Left" Width="90" Height="90" Content="Two" Style="{DynamicResource ButtonStyle1}" Cursor="Hand" Margin="0,0,0,4" />
        <Button x:Name="button_Three" HorizontalAlignment="Left" Width="90" Height="90" Content="Two" Style="{DynamicResource ButtonStyle1}" Cursor="Hand" Margin="0,0,0,4" />
    </StackPanel>   
</Grid>

- vladc77

Answer 1

你可以将其更改为使用“IsFocused”属性，而不是“IsPressed”。

- Fiona

Answer 2

切换按钮？创建一个切换按钮用户控件，由两个按钮组成。其中一个开始时是隐藏的。当您单击可见的一个时，隐藏它并显示隐藏的一个。然后，您也可以在 OnClick 事件中隐藏/显示其他按钮。

- Mike Blandford

---

我无法在我的情况下使用切换按钮。是否有可能在单击一个按钮时控制每个按钮的背景颜色值？ - vladc77

Answer 3

听起来你实际上是在寻找单选按钮的功能。

http://www.wpftutorial.net/RadioButton.html

给每个单选按钮设置相同的 GroupName，你就可以得到所需的功能。

- James Hay