WPF images cannot be displayed (WPF background images cannot be displayed)

I am currently working on WPF development and have encountered image display problems. Now I will explain the solution.

1. Double-click the resources. resx file of the project, and click Add resource on the left-side interface to add images, as shown in.

2. After the image is successfully added, the resources folder is automatically generated, and the added resource files are listed in the folder. If not, you can compile the project, as shown in.

3. Select the resources folder image, right click, and select properties. In the Properties window below, set build action to resource and clear the project and re-compile it.

4. The page code is as follows. lyncsmsapp is the project name, and "component/resource file name/image name" is used as the template for modification.

5. Final Results