The name does not exist in the namespace error in XAML
vb.net, visual-studio-2012, wpf, xaml
Solution
When you are writing your wpf code and VS tell that "The name ABCDE does not exist in the namespace clr-namespace:ABC". But you can totally build your project successfully, there is only a small inconvenience because you can not see the UI designing (or just want to clean the code).
Try to do these:
In VS, right click on your Solution -> Properties -> Configuration Properties
A new dialog is opened, try to change the project configurations from Debug to Release or vice versa.
After that, re-build your solution. It can solve your problem.
Problem
Using VS2012 working on a VB.NET WPF application. I have a simple MusicPlayer tutorial app I am using to learn WPF. I am converting a C# version of the tutorial to VB.NET step by step. It has 2 classes in the app that are both under the same namespace. I am able to reference the namespace in the XAML but when I try to reference the class object in XAML I get an error and I am not able to compile. Strange thing is that the IntelliSense works fine with both referencing the namespace via the xmlns:c= tag and also when typing the class object using `<c:` But the object is underlined and errors are generated trying to build or work in the designer. The .vb class files are in a folder called \Controls. The Main project Root Namespace is intentionaly left blank. The class is coded like this... ``` Namespace MusicPlayer.Controls Public Class UpdatingMediaElement .... code here End Public End Namespace ``` The xaml looks like this (namespace defined in the `<Window >` tag ``` xmlns:c="clr-namespace:MusicPlayer.Controls" ``` (object defined in a `<Grid>` ) ``` <c:UpdatingMediaElement Name="MyMediaElement" /> ``` (error displayed) The name "UpdatingMediaElement" does not exist in the namespace "clr-namespace:MusicPlayer.Controls". Not sure what is wrong or how to fix it?