When you create an application, it makes more sense to keep your images in your library as resources so that they also get packaged when you decide to go to production with your application. Loading an image resource (image file that was imported from the file system to your project and can be found under the Resources tree item) can be done using Properties.Resources.?
The ? would be the name of the resource image that is part of your resources. Visual Studio’s intellisense can easily show you the list of resources once you type Properties.Resources. .