Silverlight 4 Out of Browser: "Unable to determine the URL to the Xap file from web"

Question

For some reason, whenever I now try and run my SL4 application out-of-browser, when I run it I get the following message:

"Unable to determine the URL to the Xap file from web "

refers to an old name of my web project, and it has now been renamed. I've gone through all references of said project name and can't find any more; clearly it's getting it from somewhere though!

Googled but found nothing (aside from a link to an SO question which is now removed!).

Any help gratefully received...

Tepic

Answer 1

The issue comes from a misconfiguration of the project's user file. VS can't find which XAP file it should use during the debugging experience.

In the myproject.csproj.user file, change

<OutOfBrowserProjectToDebug>OldName</OutOfBrowserProjectToDebug>

to

<OutOfBrowserProjectToDebug>NewName</OutOfBrowserProjectToDebug>

Verbenaceous

excellent - thank you :-) that explains why find-in-files didn't work to find that reference to the old project name - the .user file isn't a part of the visual studio solution. – Tepic

Note: You'll have to reload your VS Solution/Project to pick up the change if you modify the user file manually (via notepad, for example) – Glassworker

Answer 2

In Silverlight 5 and Visual Studio 2012:

• go to silverlight project settings, open Debug tab and click on combobox, then select existing value. Usually there will be only one item (already selected), but it's important to click on it.

Trafalgar