I spent half a morning debugging this. Figured out after 3 hours that another developer had set Project Target Framework to .Net Framework 4 Client Profile, instead of .Net Framework 4, then checked it back into SVN that way.

This of course resulted in many of my references not working.

Go figure.


>I have a WPF app that references another project (C# DLL). The WPF project won't compile. Getting:
>
>

>The type reference cannot find a public type named 'RuleGroup'. Line 12 Position 70.	
>

>
>Here's the XAML:
>
>

><UserControl x:Class="RulesEngineUI.crlRuleTree"
>             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
>             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
>             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
>             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
>             xmlns:local="clr-namespace:RulesEngine;assembly=RulesEngine"
>             mc:Ignorable="d" d:DesignHeight="217" d:DesignWidth="232">
>
>    <UserControl.Resources>
>
>        <HierarchicalDataTemplate DataType="{x:Type local:RuleGroup}"  
>                                  ItemsSource="{Binding Path=Rules}">
>            
>            <StackPanel Orientation="Horizontal">
>                <TextBlock Margin="0,0,5,0" FontWeight="Bold">Group:</TextBlock>
>                <TextBlock Text="{Binding Path=GroupName}"/>
>            </StackPanel>              
>
>        </HierarchicalDataTemplate>
>.
>.
>.
>

>
>You can see that 'local' is a reference to the other project. The error is on "HierarchicalDataTemplate DataType="{x:Type local:RuleGroup}"
>
>When I hit "local:", intellisense shows me tje classes in the referenced project, so I know the ref works. Anyone see what I'm doing wrong?