Old namespace still in .g.cs file when changing namespace of a referenced class

Question

I have renamed the namespace of a referenced class and WPF compiler doesn't want to take it into account: it keeps prefixing MyOldNameSpace in .g.cs file:

[System.CodeDom.Compiler.GeneratedCodeAttribute
     ("PresentationBuildTasks", "4.0.0.0")]
public partial class MyClass: 
    MyOldNameSpace.MyReferencedClass, 
    System.Windows.Markup.IComponentConnector {

Why ? How to fix this ? What's this obscure .g.cs file ?

Answer 1

Looks like you didn't change your MyClass.xaml file. There should be something like this on top of it

<MyClass x:Class="MyOldNameSpace.MyReferencedClass"

but should be "MyNewNameSpace.MyReferencedClass"

Answer 2

Close the .g.cs file. You can even delete it.

The g stands for generated, VS generates the wireing up between the code and the Xaml in this partial class.

Clean the solution and rebuild. That should fix it.

Answer 3

Don't forget to change your Generic.xaml file too,

<ResourceDictionary 
                   xmlns:local="clr-namespace:MyOldNameSpace">
</ResourceDictionary>