title: The name "XamlDisplay" does not exist in the namespace
body: <p>I am trying to implement Material Design in xaml Toolkit and getting this error </p>
  
  <pre><code>The name "XamlDisplay" does not exist in the namespace "clr-namespace:ShowMeTheXAML;assembly=ShowMeTheXAML"
  </code></pre>
  
  <p>i just copied and pasted this code from official docs
  <a href="https://github.com/ButchersBoy/MaterialDesignInXamlToolkit/blob/master/MainDemo.Wpf/Shadows.xaml" rel="nofollow noreferrer">Xaml code</a><br>
  I have tried solution provided here <a href="https://stackoverflow.com/questions/14665713/the-name-does-not-exist-in-the-namespace-error-in-xaml">Other Question on StackOverflow</a> like changing Debug to Release mode ,cleaning shadowCache and DLL file permissions.<br>
  But these all are just tricks and are not reliable answers and they don't work for me .
  whats wrong happening ?<br>
  <strong>My Xaml code</strong></p>
  
  <pre><code>&lt;Window x:Class="MaterialTestApp.MainWindow"
      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
      xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
      xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
      xmlns:local="clr-namespace:MaterialTestApp"
      mc:Ignorable="d"
      xmlns:smtx="clr-namespace:ShowMeTheXAML;assembly=ShowMeTheXAML"
      xmlns:materialDesign="http://materialdesigninxaml.net/winfx/xaml/themes"
      TextElement.Foreground="{DynamicResource MaterialDesignBody}"
      TextElement.FontWeight="Regular"
      TextElement.FontSize="13"
      TextOptions.TextFormattingMode="Ideal" 
      TextOptions.TextRenderingMode="Auto"        
      Background="{DynamicResource MaterialDesignPaper}"
      FontFamily="{DynamicResource MaterialDesignFont}"&gt;
  &lt;Grid&gt;
      &lt;StackPanel Margin="8 8 0 0"&gt;
          &lt;TextBlock&gt;Raised controls have default shadows set, but the shadows can be overriden.&lt;/TextBlock&gt;
          &lt;StackPanel Orientation="Horizontal" Margin="0 32 0 0"&gt;
              &lt;smtx:XamlDisplay Key="shadow_1"&gt;
                  &lt;Button Style="{DynamicResource MaterialDesignRaisedButton}"
                      &gt;DEPTH 1&lt;/Button&gt;
              &lt;/smtx:XamlDisplay&gt;
              &lt;smtx:XamlDisplay Key="shadow_2" Margin="16 0 0 0"&gt;
                  &lt;Button Style="{DynamicResource MaterialDesignRaisedButton}"
                      materialDesign:ShadowAssist.ShadowDepth="Depth2"
                      &gt;DEPTH 2&lt;/Button&gt;
              &lt;/smtx:XamlDisplay&gt;
              &lt;smtx:XamlDisplay Key="shadow_3" Margin="16 0 0 0"&gt;
                  &lt;Button Style="{DynamicResource MaterialDesignRaisedButton}"
                      materialDesign:ShadowAssist.ShadowDepth="Depth3"
                      &gt;DEPTH 3&lt;/Button&gt;
              &lt;/smtx:XamlDisplay&gt;
              &lt;smtx:XamlDisplay Key="shadow_4" Margin="16 0 0 0"&gt;
                  &lt;Button Style="{DynamicResource MaterialDesignRaisedButton}"
                      materialDesign:ShadowAssist.ShadowDepth="Depth4"
                      &gt;DEPTH 4&lt;/Button&gt;
              &lt;/smtx:XamlDisplay&gt;
              &lt;smtx:XamlDisplay Key="shadow_5" Margin="16 0 0 0"&gt;
                  &lt;Button Style="{DynamicResource MaterialDesignRaisedButton}"
                      materialDesign:ShadowAssist.ShadowDepth="Depth5"
                      &gt;DEPTH 5&lt;/Button&gt;
              &lt;/smtx:XamlDisplay&gt;
          &lt;/StackPanel&gt;
          &lt;StackPanel Orientation="Horizontal" Margin="0 32 0 0"&gt;
              &lt;smtx:XamlDisplay Key="shadow_6"&gt;
                  &lt;Button Style="{DynamicResource MaterialDesignFloatingActionMiniButton}"
                      materialDesign:ShadowAssist.ShadowDepth="Depth1"
                      &gt;1&lt;/Button&gt;
              &lt;/smtx:XamlDisplay&gt;
              &lt;smtx:XamlDisplay Key="shadow_7" Margin="16 0 0 0"&gt;
                  &lt;Button Style="{DynamicResource MaterialDesignFloatingActionMiniButton}"
                      materialDesign:ShadowAssist.ShadowDepth="Depth2"
                      &gt;2&lt;/Button&gt;
              &lt;/smtx:XamlDisplay&gt;
              &lt;smtx:XamlDisplay Key="shadow_8" Margin="16 0 0 0"&gt;
                  &lt;Button Style="{DynamicResource MaterialDesignFloatingActionMiniButton}"
                      materialDesign:ShadowAssist.ShadowDepth="Depth3"
                      &gt;3&lt;/Button&gt;
              &lt;/smtx:XamlDisplay&gt;
              &lt;smtx:XamlDisplay Key="shadow_9" Margin="16 0 0 0"&gt;
                  &lt;Button Style="{DynamicResource MaterialDesignFloatingActionMiniButton}"
                      materialDesign:ShadowAssist.ShadowDepth="Depth4"
                      &gt;4&lt;/Button&gt;
              &lt;/smtx:XamlDisplay&gt;
              &lt;smtx:XamlDisplay Key="shadow_10" Margin="16 0 0 0"&gt;
                  &lt;Button Style="{DynamicResource MaterialDesignFloatingActionMiniButton}"
                      materialDesign:ShadowAssist.ShadowDepth="Depth5"
                      &gt;5&lt;/Button&gt;
              &lt;/smtx:XamlDisplay&gt;
          &lt;/StackPanel&gt;
          &lt;StackPanel Orientation="Horizontal" Margin="0 32 0 0"&gt;
              &lt;smtx:XamlDisplay Key="shadow_11"&gt;
                  &lt;materialDesign:Card materialDesign:ShadowAssist.ShadowDepth="Depth1" Padding="32"&gt;DEPTH 1&lt;/materialDesign:Card&gt;
              &lt;/smtx:XamlDisplay&gt;
              &lt;smtx:XamlDisplay Key="shadow_12" Margin="16 0 0 0"&gt;
                  &lt;materialDesign:Card materialDesign:ShadowAssist.ShadowDepth="Depth2" Padding="32"&gt;DEPTH 2&lt;/materialDesign:Card&gt;
              &lt;/smtx:XamlDisplay&gt;
              &lt;smtx:XamlDisplay Key="shadow_13" Margin="16 0 0 0"&gt;
                  &lt;materialDesign:Card materialDesign:ShadowAssist.ShadowDepth="Depth3" Padding="32"&gt;DEPTH 3&lt;/materialDesign:Card&gt;
              &lt;/smtx:XamlDisplay&gt;
              &lt;smtx:XamlDisplay Key="shadow_14" Margin="16 0 0 0"&gt;
                  &lt;materialDesign:Card materialDesign:ShadowAssist.ShadowDepth="Depth4" Padding="32"&gt;DEPTH 4&lt;/materialDesign:Card&gt;
              &lt;/smtx:XamlDisplay&gt;
              &lt;smtx:XamlDisplay Key="shadow_15" Margin="16 0 0 0"&gt;
                  &lt;materialDesign:Card materialDesign:ShadowAssist.ShadowDepth="Depth5" Padding="32"&gt;DEPTH 5&lt;/materialDesign:Card&gt;
              &lt;/smtx:XamlDisplay&gt;
          &lt;/StackPanel&gt;
          &lt;StackPanel Orientation="Horizontal" Margin="0 32 0 0"&gt;
              &lt;smtx:XamlDisplay Key="shadow_16"&gt;
                  &lt;materialDesign:Card materialDesign:ShadowAssist.ShadowDepth="Depth3" materialDesign:ShadowAssist.ShadowEdges="Bottom,Right" Padding="32"&gt;CUSTOM CLIP&lt;/materialDesign:Card&gt;
              &lt;/smtx:XamlDisplay&gt;
              &lt;smtx:XamlDisplay Key="shadow_17" Margin="16 0 0 0"&gt;
                  &lt;materialDesign:Card materialDesign:ShadowAssist.ShadowDepth="Depth3" materialDesign:ShadowAssist.ShadowEdges="Top" Padding="32"&gt;CUSTOM CLIP&lt;/materialDesign:Card&gt;
              &lt;/smtx:XamlDisplay&gt;
              &lt;smtx:XamlDisplay Key="shadow_18" Margin="16 0 0 0"&gt;
                  &lt;materialDesign:Card materialDesign:ShadowAssist.ShadowDepth="Depth3" materialDesign:ShadowAssist.ShadowEdges="Bottom,Left" Padding="32"&gt;CUSTOM CLIP&lt;/materialDesign:Card&gt;
              &lt;/smtx:XamlDisplay&gt;
          &lt;/StackPanel&gt;
      &lt;/StackPanel&gt;
  &lt;/Grid&gt;
  </code></pre>
  
  <p></p>
  
  <p><strong>App.Xaml</strong>  </p>
  
  <pre><code>&lt;Application x:Class="Test_App.App"
           xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
           xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
           xmlns:local="clr-namespace:Test_App"
           StartupUri="MainWindow.xaml"&gt;
  &lt;Application.Resources&gt;
      &lt;ResourceDictionary&gt;
          &lt;ResourceDictionary.MergedDictionaries&gt;
  
              &lt;ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.Light.xaml" /&gt;
              &lt;ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.Defaults.xaml" /&gt;
              &lt;ResourceDictionary Source="pack://application:,,,/MaterialDesignColors;component/Themes/Recommended/Primary/MaterialDesignColor.DeepPurple.xaml" /&gt;
              &lt;ResourceDictionary Source="pack://application:,,,/MaterialDesignColors;component/Themes/Recommended/Accent/MaterialDesignColor.Lime.xaml" /&gt;
  
          &lt;/ResourceDictionary.MergedDictionaries&gt;
      &lt;/ResourceDictionary&gt;
  &lt;/Application.Resources&gt;
  </code></pre>
  
  <p></p>