如何提交包含现有选择的多个复选框选择并将新修改的项目保存在ASP.NET MVC中

Question

I have a model called Course and another model called SelectedCourse . These two models represent two different tables and have exclusive properties to their own and hence not the same type.

I would like to display List<Course> on my page in the form of multiple check-boxes. The courses that are available in the List<SelectedCourse> should be marked as checked.

How do I build my ViewModel to achieve this?

For Post, I would like to return the list of my ViewModel back to the controller and the POST action. And then be able to only delete/add the items that were modified (selected/un-selected) to the table representing List<SelectedCourse> .

How do I achieve this?

(Because I don't know how to create my ViewModel, I cannot provide cshtml or controller actions to prove effort)

Answer 1

Your ViewModel could contain a list of eg CourseViewModel objects, which contains the properties of the Course you are using in the view, but also a bool for representing whether the course is selected. See this question for an example.

Your action method (POST) could take the list of CourseViewModels as argument, which allows the form to post that list of ViewModels back to the controller. See this question for an example.