Kieren,
这会为您服务吗?
我已经扩展名为CustomGrid网格类并创建了一个TestProperty改变将改变电网的背景颜色,当其值:
public class CustomGrid : Grid
{
public bool Test
{
get
{
return (bool)GetValue(TestProperty);
}
set
{
SetValue(TestProperty, value);
}
}
public static readonly DependencyProperty TestProperty =
DependencyProperty.Register("Test", typeof(bool), typeof(CustomGrid),
new PropertyMetadata(new PropertyChangedCallback
((obj, propChanged) =>
{
CustomGrid control = obj as CustomGrid;
if (control != null)
{
Storyboard sb = new Storyboard() { Duration = new Duration(TimeSpan.FromMilliseconds(500)) };
Random rand = new Random();
Color col = new Color()
{
A = 100,
R = (byte)(rand.Next() % 255),
G = (byte)(rand.Next() % 255),
B = (byte)(rand.Next() % 255)
};
ColorAnimation colAnim = new ColorAnimation();
colAnim.To = col;
colAnim.Duration = new Duration(TimeSpan.FromMilliseconds(500));
sb.Children.Add(colAnim);
Storyboard.SetTarget(colAnim, control);
Storyboard.SetTargetProperty(colAnim, new PropertyPath("(Panel.Background).(SolidColorBrush.Color)"));
sb.Begin();
}
}
)));
}
这是按钮点击事件改变颜色:
private void btnClick_Click(object sender, RoutedEventArgs e)
{
gridCustom.Test = (gridCustom.Test == true) ? false : true;
}
我正在更改网格的背景颜色,因为我没有您的列表框。
最后是这样的XAML:
<Grid x:Name="grid" Background="White">
<local:CustomGrid x:Name="gridCustom" Background="Pink" Height="100" Margin="104,109,112,102" >
</local:CustomGrid>
<Button Content="Click Me" x:Name="btnClick" Height="45" HorizontalAlignment="Left" Margin="104,12,0,0" VerticalAlignment="Top" Width="145" Click="btnClick_Click" />
</Grid>
这是否会为你的目的是什么?让我知道还是我误解了这个问题?
编辑:
看到这个代码:
ColorAnimation的财产权,你可能已经猜到了无法绑定。但这并不意味着你无法改变它的价值。您可以随时获得对ColorAnimation的参考,并将其更改为值,并且一切运行良好。因此,从WPF的绑定世界中,我们需要改变一下,并绑定数据,我们在Winforms中如何使用它。作为一个例子来看看这个:
这是XAML:
<Window
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:Microsoft_Windows_Themes="clr-namespace:Microsoft.Windows.Themes;assembly=PresentationFramework.Aero" x:Class="ControlTemplateTriggers.MainWindow"
Title="MainWindow" Height="350" Width="525">
<Window.Resources>
<Storyboard x:Key="Storyboard">
<ColorAnimation From="Black" To="Red" Duration="00:00:00.500" Storyboard.TargetProperty="(Panel.Background).(SolidColorBrush.Color)" Storyboard.TargetName="gridCustom" />
</Storyboard>
</Window.Resources>
<Grid x:Name="grid" Background="White">
<Grid x:Name="gridCustom" Background="Pink" Height="100" Margin="104,109,112,102" />
<Button Content="Click Me" x:Name="btnClick" Height="45" HorizontalAlignment="Left" Margin="104,12,0,0" VerticalAlignment="Top" Width="145" Click="btnClick_Click" />
</Grid>
</Window>
这是后面的代码:
using System.Windows;
using System.Windows.Media.Animation;
using System.Windows.Media;
using System;
namespace Sample {
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
this.DataContext = this;
}
private void btnClick_Click(object sender, RoutedEventArgs e)
{
Storyboard sb = this.Resources["Storyboard"] as Storyboard;
if (sb != null)
{
ColorAnimation frame = sb.Children[0] as ColorAnimation;
Random rand = new Random();
Color col = new Color()
{
A = 100,
R = (byte)(rand.Next() % 255),
G = (byte)(rand.Next() % 255),
B = (byte)(rand.Next() % 255)
};
frame.To = col;
sb.Begin();
}
}
}
}
正如你可以看到我正在给故事板的引用,并改变其财产。你对StaticResource的方法显然不起作用。现在你可以做的是,在你的DependencyProperty
回调中以某种方式得到你想要动画并使用VisualTreeHelper或其他东西的时间轴的引用,然后设置它的To
属性。
这是你最好的选择。
让我知道这是否解决您的问题:)
你能解释一下,请多一点,我不明白?控件的用户将能够指定00000000-ffffffff,即40亿种颜色中的1种,每种颜色一次触发,当然不是? :) –