Question

Well, I´m developing a wpf application and I got a strange error on design time. This is the code of a wpf form:

<Window x:Class="ViewLayer.Frm_EnrollWaitingList"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="Frm_EnrollWaitingList" WindowStartupLocation="CenterScreen" BorderBrush="{x:Null}" mc:Ignorable="d" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" Height="390" Width="410"
        WindowStyle="None"
        AllowsTransparency="True"
        ResizeMode="NoResize">
    <Window.Resources>
        <ResourceDictionary Source="Dictionary/WaitingListDictorionary.xaml"/>
    </Window.Resources>
    <Grid>
        <Rectangle Margin="0,0,0,0" Name="rectangle1" Stroke="{x:Null}" Fill="#FF8C90AD" Opacity="0.95" />
        <Button Style="{DynamicResource CommonButton}" Content="Salir" Height="80" HorizontalAlignment="Left" Margin="166,234,0,0" Name="btn_close" VerticalAlignment="Top" Width="180" />
    </Grid>
</Window>

The problem starts here:

<Window.Resources>
    <ResourceDictionary Source="Dictionary/WaitingListDictorionary.xaml"/>
</Window.Resources>

The ResourceDictionary exits and in execution time it works perfectly. But at design time sometime when a want to modify the form in visual studio designer i get the following error:

FileNotFoundException An error occurred while finding the resource dictionary "Dictionary/WaitingListDictorionary.xaml".


Unable to find the specified file.
   at Microsoft.Windows.Design.Platform.ViewProducerBase.Microsoft.Expression.DesignModel.DocumentModel.IDocumentRootResolver.GetDocumentRoot(String path)
   at Microsoft.Expression.Platform.WPF.InstanceBuilders.ResourceDictionaryInstanceBuilder.ProvideResourceDictionary(IInstanceBuilderContext context, DocumentCompositeNode resourceDictionaryReferenceNode, IDocumentRoot& relatedRoot)

And I can not edit the form with the designer.

Any idea? I repeat on execution time I have no problems.

Answer 1

The Source property is relative, and you window appears to be in the ViewLayer directory, so the Dictionary folder must also be in the ViewLayer directory if you use

Source="Dictionary/WaitingListDictorionary.xaml".  

If the Dicionary folder is at the root level, try

Source="/Dictionary/WaitingListDictorionary.xaml".

You can also use a pack:// URL.