Amalgamating validation and visuals

Let's now utilize some of the techniques that we discussed in the previous chapter to design a visually appealing user interface that highlights validation errors in a novel way, using our glowing example. We'll first need to add some more resources to use in this example. Let's start by adding two further glow brush resources to the GreenGlow brush resource from the previous chapter:

<RadialGradientBrush x:Key="BlueGlow" Center="0.5,0.848"  
  GradientOrigin="0.5,0.818" RadiusX="-1.424" RadiusY="-0.622"  
  RelativeTransform="{StaticResource GlowTransformGroup}"> 
  <GradientStop Color="#CF01C7FF" Offset="0.168" /> 
  <GradientStop Color="#4B01C7FF" Offset="0.478" /> 
  <GradientStop Color="#1101C7FF" Offset="1" /> 
</RadialGradientBrush> 
<RadialGradientBrush x:Key="RedGlow"...