xamlのプロパティを設定して境界背景を動的に変更します

Question

"Brush2"という名前のBorder Backgroundプロパティを動的に変更しようとしていますが、次のエラーが発生します。

型のオブジェクトをキャストすることができません 'System.Windows.Media.Color' を入力し 'System.Windows.Media.Brush'。あなたがする必要がどのような

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"> 

    <Color x:Key="Brush0">#7F605F5F</Color> 
    <Color x:Key="Brush1">#7F7E7E7E</Color> 

    <Color x:Key="Color2">#7FFDFDFD</Color> 
    <SolidColorBrush x:Key="Brush2" Color="{DynamicResource Color2}" /> 

    <Color x:Key="Brush3">#7FFFFFFF</Color> 
    <Color x:Key="Brush4">#BFFFFFFF</Color> 
    <Color x:Key="Brush5">#F2FFFFFF</Color> 
    <Color x:Key="Brush6">#FF6096E5</Color> 
    <Color x:Key="Brush7">#FF9B7C35</Color> 
    <Color x:Key="Brush8">#FFB0BAA1</Color> 
    <Color x:Key="Brush9">#7F60605F</Color> 
    <Color x:Key="Brush10">White</Color> 



    <Style TargetType="{x:Type TabItem}" > 
     <Setter Property="Template"> 
      <Setter.Value> 
       <ControlTemplate TargetType="{x:Type TabItem}"> 
        <Grid> 
         <VisualStateManager.VisualStateGroups> 


          <VisualStateGroup x:Name="CommonStates"> 
           <!-- silver --> 
           <VisualState x:Name="Selected"> 
            <Storyboard> 
             <ColorAnimationUsingKeyFrames Storyboard.TargetProperty="(Panel.Background).(GradientBrush.GradientStops)[0].(GradientStop.Color)" Storyboard.TargetName="border"> 
              <EasingColorKeyFrame KeyTime="0" Value="{DynamicResource Brush8}"/> 
             </ColorAnimationUsingKeyFrames> 
             <ColorAnimationUsingKeyFrames Storyboard.TargetProperty="(Panel.Background).(GradientBrush.GradientStops)[1].(GradientStop.Color)" Storyboard.TargetName="border"> 
              <EasingColorKeyFrame KeyTime="0" Value="{DynamicResource Brush8}"/> 
             </ColorAnimationUsingKeyFrames> 
             <ColorAnimationUsingKeyFrames Storyboard.TargetProperty="(Border.BorderBrush).(GradientBrush.GradientStops)[1].(GradientStop.Color)" Storyboard.TargetName="border"> 
              <EasingColorKeyFrame KeyTime="0" Value="{DynamicResource Brush0}"/> 
             </ColorAnimationUsingKeyFrames> 
             <ColorAnimationUsingKeyFrames Storyboard.TargetProperty="(Border.BorderBrush).(GradientBrush.GradientStops)[0].(GradientStop.Color)" Storyboard.TargetName="border"> 
              <EasingColorKeyFrame KeyTime="0" Value="{DynamicResource Brush9}"/> 
             </ColorAnimationUsingKeyFrames> 
            </Storyboard> 
           </VisualState> 


           <VisualState x:Name="Normal"/> 


           <VisualState x:Name="MouseOver"> 
            <!-- bronze --> 
            <Storyboard> 
             <ColorAnimationUsingKeyFrames Storyboard.TargetProperty="(Panel.Background).(GradientBrush.GradientStops)[0].(GradientStop.Color)" Storyboard.TargetName="border"> 
              <EasingColorKeyFrame KeyTime="0" Value="{DynamicResource Brush7}"/> 
             </ColorAnimationUsingKeyFrames> 
             <ColorAnimationUsingKeyFrames Storyboard.TargetProperty="(Panel.Background).(GradientBrush.GradientStops)[1].(GradientStop.Color)" Storyboard.TargetName="border"> 
              <EasingColorKeyFrame KeyTime="0" Value="{DynamicResource Brush7}"/> 
             </ColorAnimationUsingKeyFrames> 
             <ColorAnimationUsingKeyFrames Storyboard.TargetProperty="(Border.BorderBrush).(GradientBrush.GradientStops)[1].(GradientStop.Color)" Storyboard.TargetName="border"> 
              <EasingColorKeyFrame KeyTime="0" Value="{DynamicResource Brush0}"/> 
             </ColorAnimationUsingKeyFrames> 
             <ColorAnimationUsingKeyFrames Storyboard.TargetProperty="(Border.BorderBrush).(GradientBrush.GradientStops)[0].(GradientStop.Color)" Storyboard.TargetName="border"> 
              <EasingColorKeyFrame KeyTime="0" Value="{DynamicResource Brush9}"/> 
             </ColorAnimationUsingKeyFrames> 
            </Storyboard> 
           </VisualState> 



           <VisualState x:Name="Flashing"> 
            <Storyboard> 
             <DoubleAnimation 
              Storyboard.TargetName="BorderGlass" 
              Storyboard.TargetProperty="Opacity" 
              From="0.0" 
              To="1.0"      
              Duration="0:0:0.33" 
              AutoReverse="True" 
              RepeatBehavior="Forever"/> 
            </Storyboard> 
           </VisualState> 


           <VisualState x:Name="Disabled"/> 
          </VisualStateGroup> 


         </VisualStateManager.VisualStateGroups> 

         <Border x:Name="border" BorderThickness="3" CornerRadius="5,5,0,0"> 
          <Border.BorderBrush> 
           <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"> 
            <GradientStop Color="{DynamicResource Brush0}" Offset="0"/> 
            <GradientStop Color="{DynamicResource Brush1}" Offset="1"/> 
           </LinearGradientBrush> 
          </Border.BorderBrush> 
          <Border.Background> 
           <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"> 
            <GradientStop Color="{DynamicResource Brush6}" Offset="0.004"/> 
            <GradientStop Color="{DynamicResource Brush6}" Offset="0.823"/> 
            <GradientStop Color="{DynamicResource Brush10}" Offset="0.228"/> 
           </LinearGradientBrush> 
          </Border.Background> 
         </Border> 
         <Border x:Name="BorderGlass" BorderThickness="3" CornerRadius="5,5,0,0" Background="{DynamicResource Brush2}"> 
          <Border.BorderBrush> 
           <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"> 
            <GradientStop Color="{DynamicResource Brush3}" Offset="0"/> 
            <GradientStop Color="{DynamicResource Brush4}" Offset="0.401"/> 
            <GradientStop Color="{DynamicResource Brush5}" Offset="0.254"/> 
           </LinearGradientBrush> 
          </Border.BorderBrush> 
         </Border> 

         <ContentPresenter HorizontalAlignment="Center" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="Center" ContentSource="Header"/> 

        </Grid> 
       </ControlTemplate> 
      </Setter.Value> 
     </Setter> 
    </Style> 



</ResourceDictionary> 

Answer 1

次のコードは動作しますが、私はこれをしなければならなかった：

Uri uri2 = new Uri("/Resources/DayModeTab2.xaml", UriKind.Relative); 
ResourceDictionary resDict2 = Application.LoadComponent(uri2) as ResourceDictionary; 

//Make some changes 
MobileApp.Get().Resources.MergedDictionaries.Add(resDict2); 

そして、私は2つのXAMLファイルでBrush0を持っているので、また私の貧弱なネーミング方式は、競合を引き起こしました。

<Border x:Name="BorderGlass" BorderThickness="3" CornerRadius="5,5,0,0" > 
    <Border.Background> 
    <SolidColorBrush Color="{DynamicResource Color2}" /> 
    </Border.Background> 
<Border.BorderBrush> 
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"> 
    <GradientStop Color="{DynamicResource Brush3}" Offset="0"/> 
    <GradientStop Color="{DynamicResource Brush4}" Offset="0.401"/> 
    <GradientStop Color="{DynamicResource Brush5}" Offset="0.254"/> 
</LinearGradientBrush> 
</Border.BorderBrush> 
</Border> 

Answer 2

のSolidColorBrushオブジェクトのようなものにブラシを設定されています。 http://msdn.microsoft.com/en-us/library/system.windows.media.solidcolorbrush.aspx

コンストラクタはカラーオブジェクトを受け取ります。