所以现在我们正在从silverlight变为wpf。为silverlight实现的自定义控件，我试图将它们复制为wpf。问题是控件在wpf中不可见。
以下是控件的实现：
xaml文件（c = CcsFeedbackLED.xaml）：
<ResourceDictionary
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:controlls"
xmlns:vsm="clr-namespace:System.Windows;assembly=PresentationFramework">
<Style TargetType="local:CcsFeedbackLED">
<Setter Property="EnabledColor" Value="Gray" />
<Setter Property="IsEnabled" Value="True" />
<Setter Property="Visibility" Value="Visible" />
<Setter Property="IsTabStop" Value="False" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="local:CcsFeedbackLED">
<Grid>
<vsm:VisualStateManager.VisualStateGroups>
<vsm:VisualStateGroup x:Name="CommonStates">
<vsm:VisualState x:Name="Normal">
<Storyboard>
<ColorAnimationUsingKeyFrames
Storyboard.TargetName="GradiantOverlay"
BeginTime="00:00:00"
Duration="00:00:00.50"
Storyboard.TargetProperty="(Rectangle.Fill).(LinearGradientBrush.GradientStops)[0].(GradientStop.Color)"
FillBehavior="HoldEnd">
<LinearColorKeyFrame
Value="#40000000"
KeyTime="00:00:00.50"/>
</ColorAnimationUsingKeyFrames>
<ColorAnimationUsingKeyFrames
Storyboard.TargetName="GradiantOverlay"
BeginTime="00:00:00"
Duration="00:00:00.50"
Storyboard.TargetProperty="(Rectangle.Fill).(LinearGradientBrush.GradientStops)[1].(GradientStop.Color)"
FillBehavior="HoldEnd">
<LinearColorKeyFrame
Value="#5E000000"
KeyTime="00:00:00.50"/>
</ColorAnimationUsingKeyFrames>
<ColorAnimationUsingKeyFrames
Storyboard.TargetName="GradiantOverlay"
BeginTime="00:00:00"
Duration="00:00:00.50"
Storyboard.TargetProperty="(Rectangle.Fill).(LinearGradientBrush.GradientStops)[2].(GradientStop.Color)"
FillBehavior="HoldEnd">
<LinearColorKeyFrame
Value="#00000000"
KeyTime="00:00:00.50"/>
</ColorAnimationUsingKeyFrames>
<ColorAnimationUsingKeyFrames
Storyboard.TargetName="GradiantGloss"
BeginTime="00:00:00"
Duration="00:00:00.50"
Storyboard.TargetProperty="(Ellipse.Fill).(LinearGradientBrush.GradientStops)[0].(GradientStop.Color)"
FillBehavior="HoldEnd">
<LinearColorKeyFrame
Value="#48FFFFFF"
KeyTime="00:00:00.50"/>
</ColorAnimationUsingKeyFrames>
<ColorAnimationUsingKeyFrames
Storyboard.TargetName="GradiantGloss"
BeginTime="00:00:00"
Duration="00:00:00.50"
Storyboard.TargetProperty="(Ellipse.Fill).(LinearGradientBrush.GradientStops)[1].(GradientStop.Color)"
FillBehavior="HoldEnd">
<LinearColorKeyFrame
Value="#CEFFFFFF"
KeyTime="00:00:00.50"/>
</ColorAnimationUsingKeyFrames>
</Storyboard>
</vsm:VisualState>
<vsm:VisualState x:Name="Disabled">
<Storyboard>
<ColorAnimationUsingKeyFrames
Storyboard.TargetName="GradiantOverlay"
BeginTime="00:00:00"
Duration="00:00:00.1"
Storyboard.TargetProperty="(Rectangle.Fill).(LinearGradientBrush.GradientStops)[0].(GradientStop.Color)"
FillBehavior="HoldEnd">
<LinearColorKeyFrame
Value="#B0000000"
KeyTime="00:00:01"/>
</ColorAnimationUsingKeyFrames>
<ColorAnimationUsingKeyFrames
Storyboard.TargetName="GradiantOverlay"
BeginTime="00:00:00"
Duration="00:00:00.1"
Storyboard.TargetProperty="(Rectangle.Fill).(LinearGradientBrush.GradientStops)[1].(GradientStop.Color)"
FillBehavior="HoldEnd">
<LinearColorKeyFrame
Value="#CE000000"
KeyTime="00:00:00.1"/>
</ColorAnimationUsingKeyFrames>
<ColorAnimationUsingKeyFrames
Storyboard.TargetName="GradiantOverlay"
BeginTime="00:00:00"
Duration="00:00:00.1"
Storyboard.TargetProperty="(Rectangle.Fill).(LinearGradientBrush.GradientStops)[2].(GradientStop.Color)"
FillBehavior="HoldEnd">
<LinearColorKeyFrame
Value="#70000000"
KeyTime="00:00:00.1"/>
</ColorAnimationUsingKeyFrames>
<ColorAnimationUsingKeyFrames
Storyboard.TargetName="GradiantGloss"
BeginTime="00:00:00"
Duration="00:00:00.1"
Storyboard.TargetProperty="(Ellipse.Fill).(LinearGradientBrush.GradientStops)[0].(GradientStop.Color)"
FillBehavior="HoldEnd">
<LinearColorKeyFrame
Value="#48FFFFFF"
KeyTime="00:00:00.1"/>
</ColorAnimationUsingKeyFrames>
<ColorAnimationUsingKeyFrames
Storyboard.TargetName="GradiantGloss"
BeginTime="00:00:00"
Duration="00:00:00.1"
Storyboard.TargetProperty="(Ellipse.Fill).(LinearGradientBrush.GradientStops)[1].(GradientStop.Color)"
FillBehavior="HoldEnd">
<LinearColorKeyFrame
Value="#CEFFFFFF"
KeyTime="00:00:00.1"/>
</ColorAnimationUsingKeyFrames>
</Storyboard>
</vsm:VisualState>
</vsm:VisualStateGroup>
</vsm:VisualStateManager.VisualStateGroups>
<ScrollViewer
HorizontalAlignment="Stretch"
VerticalAlignment="Stretch"
VerticalScrollBarVisibility="Hidden"
IsTabStop="False"
Padding="0"
Background="{TemplateBinding EnabledColor}">
<Grid Background="Transparent">
<Rectangle
x:Name="GradiantOverlay"
HorizontalAlignment="Stretch"
VerticalAlignment="Stretch">
<Rectangle.Fill>
<LinearGradientBrush StartPoint="0,1" EndPoint="0,0">
<GradientStop Color="#40000000" Offset="1" />
<GradientStop Color="#5E000000" Offset="0.90" />
<GradientStop Color="#00000000" Offset="0" />
</LinearGradientBrush>
</Rectangle.Fill>
</Rectangle>
<Ellipse
x:Name="GradiantGloss"
RenderTransformOrigin="0.5,0"
Width="Auto"
HorizontalAlignment="Stretch"
VerticalAlignment="Stretch">
<Ellipse.Fill>
<LinearGradientBrush StartPoint="0,0" EndPoint="0,1">
<GradientStop Color="#78FFFFFF" Offset="1" />
<GradientStop Color="#EEFFFFFF" Offset="0" />
</LinearGradientBrush>
</Ellipse.Fill>
<Ellipse.RenderTransform>
<TransformGroup>
<ScaleTransform ScaleX="1.75" ScaleY="0.65" />
</TransformGroup>
</Ellipse.RenderTransform>
</Ellipse>
</Grid>
</ScrollViewer>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
File（CscsFeedbackLED.cs）背后的代码：
using System;
using System.ComponentModel;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
namespace controlls
{
using Harris.BCD.Toolkit.Silverlight.Controls.Utilities;
/// <summary>
/// A simple LED Control with a customizable color
/// </summary>
[TemplateVisualState(Name = VisualStateInfo.StateNormal, GroupName = VisualStateInfo.GroupCommonStates)]
[TemplateVisualState(Name = VisualStateInfo.StateDisabled, GroupName = VisualStateInfo.GroupCommonStates)]
[ImplementsControlEvents]
[InheiritedControlEventsAction(typeof(Control), "IsEnabled")]
public class CcsFeedbackLED : Control, INotifyPropertyChanged
{
#region Dependency Property Definitions
/// <summary>
/// Color Dependency Property
/// </summary>
public static DependencyProperty EnabledColorProperty = DependencyProperty.Register(
"EnabledColor", typeof(Brush), typeof(CcsFeedbackLED),
new PropertyMetadata(new PropertyChangedCallback(CcsFeedbackLED.OnColorPropertyChanged)));
#endregion
#region Data Properties
/// <summary>
/// The color of the LED, specified in Hexadecimal form:
/// Format: #DDRRGGBB
/// DD - Opacity (00-FF)
/// RR - Red Channel (00-FF)
/// GG - Green Channel (00-FF)
/// BB - Blue Channel (00-FF)
/// </summary>
[ControlEventsAction]
public Brush EnabledColor
{
get { return (Brush)GetValue(CcsFeedbackLED.EnabledColorProperty); }
set { SetValue(CcsFeedbackLED.EnabledColorProperty, value); }
}
#endregion
#region Object Construction
/// <summary>
/// Default object constructor
/// </summary>
public CcsFeedbackLED()
: base()
{
this.DefaultStyleKey = typeof(CcsFeedbackLED); // Register the Style Key
this.IsEnabledChanged += delegate(object sender, DependencyPropertyChangedEventArgs e)
{
this.UpdateVisualState();
};
}
/// <summary>
/// Registers named child controls when a template is applied.
/// Also responsible for registering data-contexts for data bindings.
/// *** DO NOT INVOKE DIRECTLY ***
/// </summary>
public override void OnApplyTemplate()
{
base.OnApplyTemplate();
this.UpdateVisualState();
}
#endregion
#region Object Methods
/// <summary>
/// Updates the Visual State of the Control
/// </summary>
protected virtual void UpdateVisualState()
{
VisualStateManager.GoToState(this, (this.IsEnabled) ? VisualStateInfo.StateNormal : VisualStateInfo.StateDisabled, true);
}
#endregion
#region Control Events
/// <summary>
/// Generic Property Change event, fired whenever a dependency property is changed
/// </summary>
public event PropertyChangedEventHandler PropertyChanged;
/// <summary>
/// Notify when a property changes
/// </summary>
/// <param name="propertyName">The Name of the Property Changed</param>
protected void NotifyPropertyChanged(string propertyName)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
}
#endregion
#region Control Event Handling
/// <summary>
/// Event fired whenever the color property changes
/// ** DO NOT INVOKE DIRECTLY **
/// </summary>
/// <param name="e"></param>
protected void OnColorChange(DependencyPropertyChangedEventArgs e)
{
this.NotifyPropertyChanged("EnabledColor");
}
#endregion
#region Static Property Dependency Handling
private static void OnColorPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
CcsFeedbackLED objChange = d as CcsFeedbackLED;
if (d == null)
return;
objChange.OnColorChange(e);
}
#endregion
}
}
我试着通过引用上面的项目在wpf应用程序中使用它，如下所示：
<Window x:Class="WpfApplication2.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:he="clr-namespace:controlls;assembly=controlls"
Title="MainWindow" HorizontalAlignment="Stretch"
VerticalAlignment="Stretch">
<Grid>
<he:CcsFeedbackLED
Margin="-44,-96,10,31"
EnabledColor="#FF00FF00"
IsEnabled="True" />
</Grid>
</Window>
但是当我运行应用程序时，我无法看到控件？ 这有一些quickFix吗？这个问题很可能是将控件直接从silverlight复制到wpf
的结果