Question

我有一个按钮，我使用 LinearGradientBrush 设置按钮背景样式。一切正常，但当我按下按钮并按下按钮然后渐变颜色显示ob按钮与动画的位，但我没有为按钮背景样式的动画写任何东西。

这是我的完整代码

<Window x:Class="WpfApplication1.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="MainWindow" Height="350" Width="525">

<DockPanel>
    <Button Content="Button" Height="23" Name="button1" Width="75">
        <Button.Background>
            <LinearGradientBrush  StartPoint="0,0" EndPoint="1,1">
                <GradientStop Color="#FFD9EDFF" Offset="0"/>
                <GradientStop Color="#FFC0DEFF" Offset="0.445"/>
                <GradientStop Color="#FFAFD1F8" Offset="0.53"/>
            </LinearGradientBrush>
        </Button.Background>
    </Button>
</DockPanel>
</Window>

我希望当用户点击按钮然后渐变动画之类的任何东西都不会在按钮上启动。请指导我。感谢

Answer 1

您需要重新定义按钮样式，您可以使用ControlTemplate执行此操作。下面是如何编写重新定义按钮的可重用样式的示例。

我还添加了一个如何在IsPressed事件上实现颜色更改的示例。

<Window x:Class="ColorTest.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="MainWindow" Height="350" Width="525">
<Window.Resources>
    <ResourceDictionary>
        <LinearGradientBrush x:Key="ButtonBackground" StartPoint="0,0" EndPoint="1,1">
            <GradientStop Color="#FFD9EDFF" Offset="0"/>
            <GradientStop Color="#FFC0DEFF" Offset="0.445"/>
            <GradientStop Color="#FFAFD1F8" Offset="0.53"/>
        </LinearGradientBrush>
        <Style x:Key="SimpleButtonStyle" TargetType="{x:Type Button}">
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="{x:Type Button}">
                        <Grid>
                            <Border Background="{StaticResource ButtonBackground}" VerticalAlignment="Stretch" CornerRadius="2" HorizontalAlignment="Stretch"/>
                            <Border x:Name="BorderPressed"  Opacity="0" Background="Blue" VerticalAlignment="Stretch" CornerRadius="2" HorizontalAlignment="Stretch"/>
                            <ContentPresenter VerticalAlignment="Center" HorizontalAlignment="Center" x:Name="MainContent" />
                        </Grid>
                        <ControlTemplate.Triggers>
                            <Trigger Property="IsPressed" Value="True">
                                <Trigger.EnterActions>
                                    <BeginStoryboard>
                                        <Storyboard>
                                            <DoubleAnimation Storyboard.TargetName="BorderPressed" Storyboard.TargetProperty="Opacity" To="1" Duration="0:0:0.2"/>
                                        </Storyboard>
                                    </BeginStoryboard>
                                </Trigger.EnterActions>
                                <Trigger.ExitActions>
                                    <BeginStoryboard>
                                        <Storyboard>
                                            <DoubleAnimation Storyboard.TargetName="BorderPressed" Storyboard.TargetProperty="Opacity" To="0" Duration="0:0:0.2"/>
                                        </Storyboard>
                                    </BeginStoryboard>
                                </Trigger.ExitActions>
                            </Trigger>
                        </ControlTemplate.Triggers>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </ResourceDictionary>
</Window.Resources>
<DockPanel>
    <Button Content="Button" Height="23" Name="button1" Width="75" Style="{StaticResource SimpleButtonStyle}"/>
</DockPanel>

Answer 2

这是因为按钮的默认样式。

您需要设置新样式。

编辑：

<Button Content="Button" Height="23" Name="button1" Width="75">
 <Button.Style>
   <Style TargetType="Button">
     <Setter Property="Background">
      <Setter.Value>
        <LinearGradientBrush  StartPoint="0,0" EndPoint="1,1">
            <GradientStop Color="#FFD9EDFF" Offset="0"/>
            <GradientStop Color="#FFC0DEFF" Offset="0.445"/>
            <GradientStop Color="#FFAFD1F8" Offset="0.53"/>
        </LinearGradientBrush>
      </Setter.Value>
     </Setter>
       <Setter Property="Template">
         <Setter.Value>
           <ControlTemplate TargetType="{x:Type Button}">
              <Microsoft_Windows_Themes:ButtonChrome x:Name="Chrome" BorderBrush="{TemplateBinding BorderBrush}" Background="{TemplateBinding Background}" RenderMouseOver="{TemplateBinding IsMouseOver}" RenderPressed="{TemplateBinding IsPressed}" RenderDefaulted="{TemplateBinding IsDefaulted}" SnapsToDevicePixels="true">
                        <ContentPresenter HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
              </Microsoft_Windows_Themes:ButtonChrome>
           </ControlTemplate>
         </Setter.Value>
      </Setter>
   </Style>
 <Button.Style>
</Button>

如果您想多次使用此样式，请将其用作资源：将它设置为Window.xaml中每个按钮的这种样式

将样式移动到更高的范围（如App.xaml）会为应用程序中的每个按钮应用样式

在wpf中设置按钮背景样式

2 个答案: