在 WPF 中模糊背景
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Blur background in WPF
提问by migueladanrm
I am trying to create a blur effect in WPF, but I want to blur the content located behind the control (such as a Grid), I do not intend to blur the contents of the Grid.
我正在尝试在 WPF 中创建模糊效果，但我想模糊控件后面的内容（例如网格），我不打算模糊网格的内容。
I want to do something like this image.
我想做这样的事情。
采纳答案by aloisdg moving to codidact.com
If you are looking for something like this:
如果你正在寻找这样的东西：
The answer is to use a BitmapEffect:
答案是使用一个BitmapEffect：
<Image Source="http://www.pingminghealth.com/wp-content/uploads/2010/12/cherries.jpg" Stretch="UniformToFill">
<Image.BitmapEffect>
<BlurBitmapEffect Radius="20" />
</Image.BitmapEffect>
</Image>
You can find a tutorial about it on msdn: How to Apply a Blur Effect to a Visual.
您可以在 msdn 上找到有关它的教程：How to Apply a Blur Effect to a Visual。
回答by J?rg Flechsig
Just in case, someone is still looking for a solution in 2018, something like this worked for me: BlurryControls.BlurryUserControl.cs
以防万一，有人仍在寻找 2018 年的解决方案，这样的事情对我有用：BlurryControls.BlurryUserControl.cs
回答by Dhru 'soni
<Rectangle>
<Rectangle.Effect>
<BlurEffect Radius="{DynamicResource BlurRadius}"/>
</Rectangle.Effect>
<Rectangle.Fill>
<VisualBrush
ViewboxUnits="Absolute"
Viewbox="{Binding RenderTransform.Children[3],
Converter={StaticResource TranslateTransformToRectViewboxVisualBrushConverter},
RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type Grid}},
UpdateSourceTrigger=PropertyChanged}"
AlignmentX="Left" AlignmentY="Top"
Visual="{Binding ElementName=BackgroundContainer}" Stretch="None">
<VisualBrush.Transform>
<TranslateTransform X="0" />
</VisualBrush.Transform>
</VisualBrush>
</Rectangle.Fill>
</Rectangle>
