wpf 未启用时更改按钮背景

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时间:2020-09-13 07:01:58  来源:igfitidea点击:

Change Button Background when is not enabled

c#wpfbuttondisabled-control

提问by Nick

I need to change my Buttonbackground (as SolidColorBrush for example) only when it is not enabled (IsEnabled == false).
How can I do?

Button只有在未启用 ( IsEnabled == false)时,我才需要更改我的背景(例如 SolidColorBrush )。
我能怎么做?

Have I to modify the Button Styleusing the XAML or can I do this work programmatically? What is the correct XAML code, to change only the Background when it is not enabled?

我必须Style使用 XAML修改 Button还是可以以编程方式完成这项工作?什么是正确的 XAML 代码,在未启用时仅更改背景?

I tried the following XAML code but it has no effect:

我尝试了以下 XAML 代码,但没有效果:

<Button>
<Button.Style>
    <Style TargetType="Button">
        <Style.Triggers>
            <Trigger Property="IsEnabled" Value="False">
                <Setter Property="Background" Value="Red"></Setter>
            </Trigger>
        </Style.Triggers>
    </Style>
</Button.Style>
</Button>

回答by Eirik

You can change the background by editing the template. You'll find the default template for Buttonhere.

您可以通过编辑模板来更改背景。您将在Button此处找到默认模板。

In the trigger for IsEnabledyou can simply add something like this:

在触发器中,IsEnabled您可以简单地添加如下内容:

<Setter Property="Background" Value="{StaticResource DisabledBackgroundBrush}"/>

EDIT: Try this instead then;

编辑:然后试试这个;

<Window.Resources>
    <Style TargetType="{x:Type Button}">
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="Button">
                    <Border x:Name="Overlay" CornerRadius="2">
                        <ContentPresenter/>
                    </Border>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsEnabled" Value="false">
                            <Setter TargetName="Overlay" Property="Background" Value="Red"/>
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</Window.Resources>
<StackPanel>
    <Button Content="Button" IsEnabled="False"/>
</StackPanel>

Just change it to suit your needs.

只需更改它以满足您的需求。

回答by Echilon

You can use a Style trigger:

您可以使用样式触发器:

<Image.Style>
    <Style>
        <Style.Triggers>
            <DataTrigger Binding="{Binding IsEnabled}" Value="False">
                <Setter Property="Image.Source" Value="pack://application:,,,/disabled.png" />
            </DataTrigger>
        </Style.Triggers>
    </Style>
</Image.Style>