If you're writing an app which uses Xna, you may need to load a texture from an embedded resource. Here's how:

First embed the resource in your app. Do so by choosing Embedded Resource as the Build Action in the properties of the resource.

After that you can load the Texture2D using a stream handle to the embedded file.

Stream stream = Assembly.GetCallingAssembly().GetManifestResourceStream("AppNamespace.Folder.font.bmp");
return Texture2D.FromFile(graphicsDevice, stream);

GetCallingAssembly() can be exchanged with GetExecutingAssembly() if needed. The name of the resource must be fully qualified with the app's namespace and folders. I usually keep my resources in a folder Resources so I would have: AppNamespace.Resources.font.bmp.