Error after changing name of mainwindow

Question

I'm using WPF for the first time and I get an error like this:

Cannot locate resource 'mainwindow.xaml'

That is becuase I changed the name. Have I missed to change this is some other code? I'm not so familiar with this type of projekt, compared with Windows Form that I used before. Which file launch the application? I have been looking for one in the solution explorer. I guess it's perhaps there the error is?

Answer 1

Change it in StartupUri attribute of Application tag in App.xaml also.

Answer 2

After renaming a window project item:

• rename startup URI in App.xaml to corresponding WindowName.xaml;
• check x:Class attribute value in window XAML file, it must be match class name in code behind.