在Silverlight中，我需要一个BusyIndicator控件的消息框是透明的。 我发现了一个问题，问相同的，但没有任何的解决方案：
Silverlight的BusyIndicator控件背景颜色
我有部分代码如下：
<toolkit:BusyIndicator x:Name="WorkingLayout" Height="80">
<toolkit:BusyIndicator.BusyContent>
<StackPanel>
<TextBlock Text="Wait please..." HorizontalAlignment="Center"></TextBlock>
<Button x:Name="CancelButton" HorizontalAlignment="Center" Content="Cancel" Width="100" Click="CancelButton_Click" />
</StackPanel>
</toolkit:BusyIndicator.BusyContent>
<!-- Rest of component code -->
</toolkit:BusyIndicator>
有没有办法让所有的内容背景透明，包括包含消息框，而不是灰色渐变，因为它来作为默认？
我试图属性背景设置透明这样的：
<toolkit:BusyIndicator x:Name="WorkingLayout" Height="80" Background="Transparent">
但它没有工作。
你可以得到你想要的，你只需要修改以适应您的需求的模板。 在表达共混物，
- 右键单击忙指标，选择编辑模板，编辑副本
- 在模板中，找到进度条，并将其删除
如果你想删除的灰色框，将内容呈现到一个更高的网格，并删除边框对象这里是一个样本BusyIndicator控件我做了，
<Setter Property="HorizontalAlignment" Value="Stretch"/> <Setter Property="VerticalAlignment" Value="Stretch"/> <Setter Property="HorizontalContentAlignment" Value="Stretch"/> <Setter Property="VerticalContentAlignment" Value="Stretch"/> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="toolkit:BusyIndicator"> <Grid> <VisualStateManager.VisualStateGroups> <VisualStateGroup x:Name="VisibilityStates"> <VisualState x:Name="Hidden"> <Storyboard> <ObjectAnimationUsingKeyFrames BeginTime="00:00:00" Duration="00:00:00.001" Storyboard.TargetName="busycontent" Storyboard.TargetProperty="(UIElement.Visibility)"> <DiscreteObjectKeyFrame KeyTime="00:00:00"> <DiscreteObjectKeyFrame.Value> <Visibility>Collapsed</Visibility> </DiscreteObjectKeyFrame.Value> </DiscreteObjectKeyFrame> </ObjectAnimationUsingKeyFrames> <ObjectAnimationUsingKeyFrames BeginTime="00:00:00" Duration="00:00:00.001" Storyboard.TargetName="overlay" Storyboard.TargetProperty="(UIElement.Visibility)"> <DiscreteObjectKeyFrame KeyTime="00:00:00"> <DiscreteObjectKeyFrame.Value> <Visibility>Collapsed</Visibility> </DiscreteObjectKeyFrame.Value> </DiscreteObjectKeyFrame> </ObjectAnimationUsingKeyFrames> </Storyboard> </VisualState> <VisualState x:Name="Visible"> <Storyboard> <ObjectAnimationUsingKeyFrames BeginTime="00:00:00" Duration="00:00:00.001" Storyboard.TargetName="busycontent" Storyboard.TargetProperty="(UIElement.Visibility)"> <DiscreteObjectKeyFrame KeyTime="00:00:00"> <DiscreteObjectKeyFrame.Value> <Visibility>Visible</Visibility> </DiscreteObjectKeyFrame.Value> </DiscreteObjectKeyFrame> </ObjectAnimationUsingKeyFrames> <ObjectAnimationUsingKeyFrames BeginTime="00:00:00" Duration="00:00:00.001" Storyboard.TargetName="overlay" Storyboard.TargetProperty="(UIElement.Visibility)"> <DiscreteObjectKeyFrame KeyTime="00:00:00"> <DiscreteObjectKeyFrame.Value> <Visibility>Visible</Visibility> </DiscreteObjectKeyFrame.Value> </DiscreteObjectKeyFrame> </ObjectAnimationUsingKeyFrames> <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="ellipse" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[2].(RotateTransform.Angle)" RepeatBehavior="Forever"> <EasingDoubleKeyFrame KeyTime="00:00:00" Value="0"/> <EasingDoubleKeyFrame KeyTime="00:00:01" Value="360"/> </DoubleAnimationUsingKeyFrames> </Storyboard> </VisualState> </VisualStateGroup> <VisualStateGroup x:Name="BusyStatusStates"> <VisualState x:Name="Idle"> <Storyboard> <ObjectAnimationUsingKeyFrames BeginTime="00:00:00" Duration="00:00:00.001" Storyboard.TargetName="content" Storyboard.TargetProperty="(Control.IsEnabled)"> <DiscreteObjectKeyFrame KeyTime="00:00:00"> <DiscreteObjectKeyFrame.Value> <System:Boolean>True</System:Boolean> </DiscreteObjectKeyFrame.Value> </DiscreteObjectKeyFrame> </ObjectAnimationUsingKeyFrames> </Storyboard> </VisualState> <VisualState x:Name="Busy"> <Storyboard> <ObjectAnimationUsingKeyFrames BeginTime="00:00:00" Duration="00:00:00.001" Storyboard.TargetName="content" Storyboard.TargetProperty="(Control.IsEnabled)"> <DiscreteObjectKeyFrame KeyTime="00:00:00"> <DiscreteObjectKeyFrame.Value> <System:Boolean>False</System:Boolean> </DiscreteObjectKeyFrame.Value> </DiscreteObjectKeyFrame> </ObjectAnimationUsingKeyFrames> </Storyboard> </VisualState> </VisualStateGroup> </VisualStateManager.VisualStateGroups> <ContentControl x:Name="content" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" Content="{TemplateBinding Content}" ContentTemplate="{TemplateBinding ContentTemplate}"/> <Rectangle x:Name="overlay" Style="{TemplateBinding OverlayStyle}"/> <ContentPresenter x:Name="busycontent"> <Grid HorizontalAlignment="Center" VerticalAlignment="Center"> <Ellipse x:Name="ellipse" Margin="-13,-46,-15,-44" StrokeThickness="15" RenderTransformOrigin="0.5,0.5"> <Ellipse.RenderTransform> <TransformGroup> <ScaleTransform/> <SkewTransform/> <RotateTransform/> <TranslateTransform/> </TransformGroup> </Ellipse.RenderTransform> <Ellipse.Stroke> <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"> <GradientStop Color="Black" Offset="0"/> <GradientStop Color="Transparent" Offset="0.94"/> </LinearGradientBrush> </Ellipse.Stroke> </Ellipse> <ContentPresenter Margin="8,8,12,8" Content="{TemplateBinding BusyContent}" ContentTemplate="{TemplateBinding BusyContentTemplate}"/> </Grid> </ContentPresenter> </Grid> </ControlTemplate> </Setter.Value> </Setter> </Style> </UserControl.Resources> <Grid x:Name="LayoutRoot" Background="White"> <toolkit:BusyIndicator Background="Transparent" Style="{StaticResource BusyIndicatorStyle1}" BorderThickness="0" x:Name="WorkingLayout" Height="80" Margin="65,110,123,110"> <!--<toolkit:BusyIndicator.OverlayStyle> <Style TargetType="Rectangle"> <Setter Property="Fill" Value="White"/> <Setter Property="Opacity" Value="0.5"/> </Style> </toolkit:BusyIndicator.OverlayStyle>--> <toolkit:BusyIndicator.BusyContent> <StackPanel> <TextBlock Text="Wait please..." HorizontalAlignment="Center"></TextBlock> <Button x:Name="CancelButton" HorizontalAlignment="Center" Content="Cancel" Width="100" /> </StackPanel> </toolkit:BusyIndicator.BusyContent> <!-- Rest of component code --> </toolkit:BusyIndicator> </Grid>
