Accessing Resources in a C# WPF Application (Same Assembly)

Question

(Before I jump into the nitty-gritty, I want to set the context: I'm trying to load a WPF frame with the contents of an .html file that I'm including in my project as a resource.) I create a new WPF Application; I add a new folder called 'foofiles' to the project, and I add a couple of files (page1.foo and page2.foo) to that folder. For each newly added .foo file, I right-click on it, go to "Properties," and set the Build Action to 'Resource,' and the Copy To Output Directory to "Copy always." I want to be able to access those files both in XAML: ``` <Frame x:Name="bar" Source="/foofiles/page1.foo"/> ``` And in procedural code: ``` private void someFunc() { bar.Source = new Uri("/foofiles/page1.foo"); } ``` But I just can't figure out why this doesn't work -- I get a "Format of the URI could not be determined." In the code-behind, I tried doing this: ``` private void someFunc() { bar.Source = new Uri("pack://application:,,,/foofiles/page1.foo"); } ``` which didn't throw an exception,…

Accepted Answer

Try adding the component-part to your Pack URI like this

```
pack://application:,,,/AssemblyName;component/ResourceName
```

where AssemblyName is the name of your assembly. So for your case, the following statement should work:

```
bar.Source = new Uri("pack://application:,,,/AssemblyName;component/foofiles/page1.foo");
```

More practically, try the relative pack uri notation:

```
bar.Source = new Uri("AssemblyName;component/foofiles/page1.foo", UriKind.Relative)); 
```

For stream reading resources use

```
var streamResourceInfo = Application.GetResourceStream(uri);
using (var stream = streamResourceInfo.Stream)
{
   // do fancy stuff with stream
}
```

Accessing Resources in a C# WPF Application (Same Assembly)

Solution

Problem