我想用預定義的VisualState創建一個ControlTemplate。我想用GoToStateActions和DataTriggers來使用它們。帶有VisualStates的WPF ControlTemplate
我不知道這裏究竟出了什麼問題。在我看來,綁定不是以我認爲的方式建立的。
namespace ControlTemplateVisualState
{
using System.Windows.Controls;
public class MyControl : ContentControl
{
public MyControl()
{
this.DefaultStyleKey = typeof(MyControl);
}
}
}
<ResourceDictionary
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:ControlTemplateVisualState="clr-namespace:ControlTemplateVisualState"
xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity"
xmlns:ei="http://schemas.microsoft.com/expression/2010/interactions">
<ControlTemplate x:Key="MyControlTemplate" TargetType="{x:Type ControlTemplateVisualState:MyControl}">
<Grid x:Name="grid" Background="Red">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="VisualStateGroup">
<VisualState x:Name="IsDisabledState">
<Storyboard>
<ColorAnimationUsingKeyFrames Storyboard.TargetProperty="(Panel.Background).(SolidColorBrush.Color)" Storyboard.TargetName="grid">
<EasingColorKeyFrame KeyTime="0" Value="#FF2BFF00"/>
</ColorAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<i:Interaction.Triggers>
<ei:DataTrigger Binding="{Binding IsEnabled, ElementName=grid}" Value="False">
<ei:GoToStateAction StateName="IsDisabledState"/>
</ei:DataTrigger>
</i:Interaction.Triggers>
</Grid>
</ControlTemplate>
<Style TargetType="{x:Type ControlTemplateVisualState:MyControl}">
<Setter Property="Background" Value="#FF0010FF"/>
<Setter Property="Template" Value="{StaticResource MyControlTemplate}"/>
</Style>
</ResourceDictionary>
<Window
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
x:Class="ControlTemplateVisualState.MainWindow"
x:Name="Window"
xmlns:local="clr-namespace:ControlTemplateVisualState"
Title="MainWindow"
Width="640" Height="480">
<Grid x:Name="LayoutRoot">
<local:MyControl IsEnabled="False"/>
</Grid>
</Window>
感謝您的回答,但是您使用此foreach的意圖是什麼?空中接力?你傳遞多個字符串並在成功時打破循環? – 0xbadf00d 2011-06-03 08:07:20
你知道,我沒有很好的理由。答案是「這是他們如何在Silverlight工具包中完成的」,但我似乎無法找到解釋原因的解釋。源代碼在這裏:http://silverlight.codeplex.com/SourceControl/changeset/view/61620#779580 – 2011-06-06 16:40:56