我正在开发基本的dip开关用户控件作为个人学习练习。最初,我设置了它可以在用户控件上声明一些自定义颜色属性的位置,并且它们将用于控件中的元素。ToggleButton UserControl中的WPF模板绑定
但是,我最近发现了ToggleButtons,并重新构建了我的控件以利用它们。此后,我的自定义颜色属性(SwitchColor和SwitchBkgndColor)不再正常工作。它们总是以默认颜色呈现,而不是我在将它们放入窗口时指定的颜色。下面是一些代码:
<UserControl x:Class="DipSwitchToggleBtn"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:app="clr-namespace:SwitchesApp"
Width="20" Height="40">
<ToggleButton Name="ToggleBtn" IsThreeState="False">
<ToggleButton.Template>
<ControlTemplate>
<Canvas Name="SwitchBkgnd"
Background="{TemplateBinding app:DipSwitchToggleBtn.SwitchBkgndColor}"
>
<Rectangle Name="SwitchBlock"
Fill="{TemplateBinding app:DipSwitchToggleBtn.SwitchColor}"
Width="16" Height="16"
Canvas.Top="22"
Canvas.Left="2"
/>
</Canvas>
<ControlTemplate.Triggers>
<Trigger Property="ToggleButton.IsChecked" Value="True">
<Trigger.EnterActions>
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetName="SwitchBlock"
Duration="00:00:00.05"
Storyboard.TargetProperty="(Canvas.Top)" To="2" />
</Storyboard>
</BeginStoryboard>
</Trigger.EnterActions>
<Trigger.ExitActions>
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetName="SwitchBlock"
Duration="00:00:00.05"
Storyboard.TargetProperty="(Canvas.Top)" To="22" />
</Storyboard>
</BeginStoryboard>
</Trigger.ExitActions>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</ToggleButton.Template>
</ToggleButton>
</UserControl>
...后面的代码:
Partial Public Class DipSwitchToggleBtn
Public Property State() As Boolean
Get
Return Me.ToggleBtn.IsChecked
End Get
Set(ByVal value As Boolean)
Me.ToggleBtn.IsChecked = value
End Set
End Property
Public Sub Toggle()
Me.State = Not Me.State
End Sub
#Region " Visual Properties "
Public Shared ReadOnly SwitchColorProperty As DependencyProperty = _
DependencyProperty.Register("SwitchColor", _
GetType(Brush), GetType(DipSwitchToggleBtn), _
New FrameworkPropertyMetadata(Brushes.LightGray))
Public Property SwitchColor() As Brush
Get
Return GetValue(SwitchColorProperty)
End Get
Set(ByVal value As Brush)
SetValue(SwitchColorProperty, value)
End Set
End Property
Public Shared ReadOnly SwitchBkgndColorProperty As DependencyProperty = _
DependencyProperty.Register("SwitchBkgndColor", _
GetType(Brush), GetType(DipSwitchToggleBtn), _
New FrameworkPropertyMetadata(Brushes.Gray))
Public Property SwitchBkgndColor() As Brush
Get
Return GetValue(SwitchBkgndColorProperty)
End Get
Set(ByVal value As Brush)
SetValue(SwitchBkgndColorProperty, value)
End Set
End Property
#End Region
End Class
默认灰色和浅灰色在VS2008设计和编译的应用程序显示出来,但是当我做这样的事情在我的窗口:
<app:DipSwitchToggleBtn x:Name="DipSwitchTest" SwitchColor="#0000FF" SwitchBkgndColor="#000000" />
我为这个实例指定的颜色没有被使用。一切都编译没有错误,但我的控制仍然显示默认的颜色。
我相信这里有一些新的层次结构,因为我在ToggleButton中嵌套了我的项目。
任何帮助,将不胜感激。谢谢。
你能解决这个问题吗?我现在遇到完全相同的问题,无法分辨我做错了什么! – Raj 2010-06-21 22:07:20
和上面一样!想通了吗? – M2X 2011-01-12 20:36:36