After changing namespace in UserControl files, …g.cs files get errors

Question

I copied three classes in from another WPF project and then changed their namespaces.

Now when I run the project, I get errors in the \".g.cs\"

Answer 1

The .g.cs file is generated from the .xaml file. You need to change the x:class= attribute in your .xaml file to match the new namespace-qualified class name; then the .g.cs will be generated correctly on next compile. (Don't manually change the .g.cs file -- you'll only frustrate yourself.)

For example, if you previously had this in your .cs:

namespace Foo {
    class Bar { ...

and this in your .xaml:

And then you changed your namespace:

namespace Baz {
    class Bar { ...

Then you would need to change your .xaml file to: