Renaming WPF Windows

So, I wanted to rename a window in a WPF application - a prototype I'm working on.

First, I rename the code in the .cs code-behind file. Then, I change the Class attribute on the root element of the xaml file.

Cool, thinks I. A quick compile, no errors, everything looks good.

But, when the application is run ... I got an error dialog saying “There is no source code available for the current location”:

Eh? I thought the technology was called WPF, not WTF!

The exception dialog that followed wasn’t much help either = “Cannot locate resource window1.xaml”:

But, thought I - I've already changed all the references to window1.xaml ... haven't I?

After some searching with Google and pulling of hair, I found the culprit – in my App.xaml file:

   1: <Application 

   2:     x:Class="PocDemoA.App"

   3:      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

   4:      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

   5:      StartupUri="Window1.xaml">

   6:     <Application.Resources>

   7:  

   8:     </Application.Resources>

   9: </Application>

The StartupUri setting that needed to be updated to the new name of my form.

   1: <Application 

   2:     x:Class="PocDemoA.App"

   3:     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

   4:     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

   5:     StartupUri="Controller.xaml">

   6:     <Application.Resources>

   7:  

   8:     </Application.Resources>

   9: </Application>

One Problem solved, a thousand more to go.