title: Silverlight: The resource {0} could not be resolved (in design time only)
body: <p>I've created a new silverlight 4 project in VS2010.</p>
  
  <p>My App.xaml file is as follows:</p>
  
  <pre><code>&lt;Application 
              xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
              x:Class="ZCall.App"&gt;
      &lt;Application.Resources&gt;
          &lt;ResourceDictionary&gt;
              &lt;ResourceDictionary.MergedDictionaries&gt;
                  &lt;ResourceDictionary Source="Resources/Styles.xaml"/&gt;
                  &lt;ResourceDictionary Source="Resources/ObjectResourceDictionary.xaml"/&gt;
              &lt;/ResourceDictionary.MergedDictionaries&gt;                        
          &lt;/ResourceDictionary&gt;
      &lt;/Application.Resources&gt;
  &lt;/Application&gt;
  </code></pre>
  
  <p>a sample xaml view that generates the error is:</p>
  
  <pre><code>&lt;UserControl x:Class="ZCall.View.Control.CDetailsControl"
      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:toolkit="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Toolkit"  
      mc:Ignorable="d"&gt;
  
      &lt;Grid x:Name="LayoutRoot" Background="White"&gt;
          &lt;toolkit:BusyIndicator x:Name="biCDetails" BusyContent="Busy..."&gt;
              &lt;Grid&gt;
                  &lt;Grid.RowDefinitions&gt;
                      &lt;RowDefinition/&gt;
                      &lt;RowDefinition Height="10"/&gt;
                      &lt;RowDefinition/&gt;
                      &lt;RowDefinition Height="10"/&gt;
                      &lt;RowDefinition/&gt;
                      &lt;RowDefinition Height="10"/&gt;
                      &lt;RowDefinition/&gt;
                  &lt;/Grid.RowDefinitions&gt;
  
                  &lt;Grid.ColumnDefinitions&gt;
                      &lt;ColumnDefinition Width="150"/&gt;
                      &lt;ColumnDefinition Width="10"/&gt;
                      &lt;ColumnDefinition Width="150"/&gt;
                      &lt;ColumnDefinition Width="10"/&gt;
                      &lt;ColumnDefinition Width="170"/&gt;
                  &lt;/Grid.ColumnDefinitions&gt;
  
                  &lt;StackPanel Grid.Row="0" Grid.Column="0" Grid.ColumnSpan="5" Orientation="Horizontal"&gt;
                      &lt;TextBlock Text="Name:" Style="{StaticResource PatientLabel}"/&gt;
                      &lt;TextBlock x:Name="txtName" Style="{StaticResource PatientData}"/&gt;
                  &lt;/StackPanel&gt;
  
  
              &lt;/Grid&gt;
          &lt;/toolkit:BusyIndicator&gt;
  
      &lt;/Grid&gt;
  &lt;/UserControl&gt;
  </code></pre>
  
  <p>I get the errors on both PatientLabel and PatientData resources.</p>
  
  <p>My style.xaml file is located in Resources folder in the root of the project.</p>
  
  <p>My problem is that in design time, none of my styles defined in styles.xaml are recognized, and i get the error "The resource could not be resolved" for every style used, while in run time all the styles are resolved and displayed as it should be.</p>
  
  <p>Any suggestions?</p>
  
  <p>Thanks in advance,
  kruvi</p>