单击后更改 wpf C# 中按钮的颜色，2 分钟后保留原始颜色
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change color of button in wpf C# after click and after 2 minutes retain the original color
提问by Danish Subhu
I am using this code
我正在使用此代码
Hello.Background = System.Windows.Media.Brushes.Blue;
var dispatcherTimer = new DispatcherTimer();
dispatcherTimer.Interval = TimeSpan.FromSeconds(61);
TimeSpan span = new TimeSpan(0,1,0);
dispatcherTimer.Start();
dispatcherTimer.Tick += delegate
{
if (dispatcherTimer.Interval > span)
{
Hello.Background = System.Windows.Media.Brushes.Red;
dispatcherTimer.Stop();
}
};
But button keeps fade in and fade out. i want color to be constant
但是按钮一直淡入淡出。我希望颜色保持不变
C#
C＃
private void Button_Click(object sender, RoutedEventArgs e)
{
Hello.Background = System.Windows.Media.Brushes.Blue;
var dispatcherTimer = new DispatcherTimer();
dispatcherTimer.Interval = TimeSpan.FromSeconds(61);
TimeSpan span = new TimeSpan(0,1,0);
dispatcherTimer.Start();
dispatcherTimer.Tick += delegate
{
if (dispatcherTimer.Interval > span)
{
Hello.Background = System.Windows.Media.Brushes.Red;
dispatcherTimer.Stop();
}
};
}
Xaml
xml
<Button Name="Hello" Content="Hello" Background="White" Foreground="Black " Click="Button_Click">
</Button>
回答by sa_ddam213
You could just create a Styleand use a Triggerto start a Storyboardwith ColorAnimations
你可以只创建Style并使用Trigger启动Storyboard与ColorAnimations
Example:
例子：
<Style x:Key="AnimatedButton" TargetType="Button">
<Setter Property="Background" Value="Red" />
<Style.Triggers>
<Trigger Property="IsPressed" Value="True">
<Trigger.EnterActions>
<BeginStoryboard>
<Storyboard Storyboard.TargetProperty="Background.Color">
<ColorAnimation To="Blue" Duration="0:0:4" />
<ColorAnimation To="Red" BeginTime="0:1:52" Duration="0:0:4" />
</Storyboard>
</BeginStoryboard>
</Trigger.EnterActions>
</Trigger>
</Style.Triggers>
</Style>
回答by Rohit
Just tried it now ..... however this is code behind
现在刚试过.....但是这是隐藏的代码
XAML Code:
XAML 代码：
<Button Content="Button" x:Name="MyButton" Height="23" HorizontalAlignment="Left"
Margin="94,128,0,0" VerticalAlignment="Top" Width="75"/>
Cs File
Cs文件
private void StartAnimation()
{
Color fromRGB= Color.FromRgb(255, 255, 255); ;
Color ToRGB= Color.FromRgb(255, 0, 0);
SolidColorBrush myBrush = new SolidColorBrush();
myBrush.Color = Colors.Black;
ColorAnimation myAnimation = new ColorAnimation();
myAnimation.From = fromRGB;
myAnimation.To = ToRGB;
myAnimation.Duration = new Duration(TimeSpan.FromMilliseconds(120000));
myAnimation.AutoReverse = true;
myBrush.BeginAnimation(SolidColorBrush.ColorProperty, myAnimation );
MyButton.Background = myBrush;
}
you can change the color when your event is called and then call your animation.
您可以在调用事件时更改颜色，然后调用动画。
回答by PKV
could you try to use a simple StoryBoard created in Blend and then apply to Button/style something like this:
您可以尝试使用在 Blend 中创建的简单 StoryBoard，然后将其应用到 Button/style 中，如下所示：
<Button Height="23" HorizontalAlignment="Left" Margin="10,10,0,0" Name="button1" VerticalAlignment="Top" Width="75" >
<Button.Background>
<SolidColorBrush x:Name="MySolidColorBrush" Color="Brown" />
</Button.Background>
<Button.Triggers>
<EventTrigger RoutedEvent="Button.Click">
<BeginStoryboard>
<Storyboard>
<ColorAnimation
Storyboard.TargetName="MySolidColorBrush"
Storyboard.TargetProperty="Color"
From="Red" To="Yellow" Duration="0:0:0" RepeatBehavior="1x" />
<ColorAnimation
Storyboard.TargetName="MySolidColorBrush"
Storyboard.TargetProperty="Color"
From="Yellow" To="Blue" Duration="0:0:0" RepeatBehavior="1x" BeginTime="0:0:10" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</Button.Triggers>
</Button>
回答by Noctis
Just to show a different approach really ... If you're using MVVM, you could bind your button color to a property on the ViewModel, and once you click on it, run your 2 minutes background/timer . Once the 2 minutes are done, it'll change the color to the other one.
只是为了展示一种不同的方法......如果您使用的是 MVVM，您可以将按钮颜色绑定到 ViewModel 上的属性，单击它后，运行 2 分钟 background/timer 。2 分钟完成后，它会将颜色更改为另一种颜色。
Not much xaml involved, and I do like some of the other solutions here :)
不涉及太多 xaml，我确实喜欢这里的其他一些解决方案 :)
private void backgroundWorker_DoWork(object sender, DoWorkEventArgs e)
{
Thread.Sleep(2000); // two second
ButtonColorPropertyName= Colors.Red;
}
(Assuming you have the ButtonColorPropertyNameor whatever you want to name it, in the ViewModel)
（假设您ButtonColorPropertyName在 ViewModel 中有或任何您想命名的名称）
