c# - 单击按钮后更改按钮的效果 WPF

Question

我想在按下按钮时应用以下更改。

<Button>
    <Button.Effect>
        <DropShadowEffect BlurRadius="10" ShadowDepth="5"/>
    </Button.Effect>
</Button>

Answer 1

如何处理 Button 的 Click 事件？

<Button Content="Click me!" Click="Button_Click_1" Margin="10" />

<小时/>

private void Button_Click_1(object sender, RoutedEventArgs e)
{
    Button button = sender as Button;
    button.Effect = new System.Windows.Media.Effects.DropShadowEffect()
    {
        BlurRadius = 10,
        ShadowDepth = 5
    };
}

如果您只想在按下按钮时显示阴影，则可以使用绑定(bind)到 IsPressed 属性的 Style:

<Button Content="Button">
    <Button.Style>
        <Style TargetType="Button">
            <Style.Triggers>
                <Trigger Property="IsPressed" Value="True">
                    <Setter Property="Effect">
                        <Setter.Value>
                            <DropShadowEffect BlurRadius="10" ShadowDepth="5"/>
                        </Setter.Value>
                    </Setter>
                </Trigger>
            </Style.Triggers>
        </Style>
    </Button.Style>
</Button>

或者使用 ToggleButton 并根据其 IsChecked 属性设置 Effect 属性:

<ToggleButton>
    <ToggleButton.Style>
        <Style TargetType="ToggleButton">
            <Style.Triggers>
                <Trigger Property="IsChecked" Value="True">
                    <Setter Property="Effect">
                        <Setter.Value>
                            <DropShadowEffect BlurRadius="10" ShadowDepth="5"/>
                        </Setter.Value>
                    </Setter>
                </Trigger>
            </Style.Triggers>
        </Style>
    </ToggleButton.Style>
</ToggleButton>