将自定义视图绑定到xamarin表单中的页面模型

I am trying to create a custom view that will be used as a header in some of the pages in the application. A custom view has a button to save info, and an image to show if the info was saved, but I can also receive info from the API if the info was saved. (this is a simplified version of the scenario)I am trying to create a custom view that will b