How do I load an icon using GetResourceStream in WPF? - wpf

Question

I've added an icon to my WPF project (BuildAction set to Resource) and I'm now trying to load that icon into a stream:
using(Stream iconStream = Application.GetResourceStream(new Uri("red.ico")).Stream)
{
// use the stream
}
This gives me the following error:
Invalid URI: The format of the URI could not be determined.
I've tried altering the Uri construction to include UriKind.Relative. This gives:
Cannot locate resource 'red.ico'.
I've looked at various articles on this For Example (from SO) and I can't see what I'm doing wrong.
Any help greatly appreciated.

Answer 1

Try something like new Uri("pack://application:,,,/red.ico"), see this page for more info on URIs in WPF.

Answer 2

Ultimately my issue boiled down to the fact that I had created a custom entry point for my WPF application and I was attempting to create a URI before the Application's static constructions had been called.
The code changed from something like this:
public static void Main()
{
var myUri = new Uri("/red.ico", UriKind.Relative);
var app = new AppMain();
app.Run();
}
to something like this:
public static void Main()
{
var app = new AppMain();
var myUri = new Uri("/red.ico", UriKind.Relative);
app.Run();
}