如何在C＃中对不同类型的属性进行分组？

Question

In class DiamondListingPage : PageBase I try to create one grouped enumerated property, which contains other objects with different types derived also from PageBase.

Now I have singles properties, and I can't use foreach with it.

public class DiamondListingPage : PageBase
{
      public View3x3Tile View3x3Tile { get; set; } = MyPages.View3x3Tile;
      public CombTableView CombTableView { get; set; } = MyPages.CombTableView;
      public TableView TableView { get; set; } = MyPages.TableView;
}

Instead this three properties I want to use collection of them from other classes, like DiamondListingPage.SubpagesList.TableView instead the current DiamondListingPage.TableView. And I also want to use foreach for this new collection DiamondListingPage.SubpagesList.

View3x3Tile, CombTableView, TableView it are different classes derived from PageBase.

Answer 1

If I understand correctly, you want to have class with properties that you can access idividually, but also you want to access some of them grouped in form of a collection so you can use foreach on them.

You can use the C# iterator method to achieve that. Theese methods use yield return to return elements of the IEnumerable . So the code would look like this:

 public class DiamondListingPage : PageBase
 {
      public View3x3Tile View3x3Tile { get; set; } = MyPages.View3x3Tile;
      public CombTableView CombTableView { get; set; } = MyPages.CombTableView;
      public TableView TableView { get; set; } = MyPages.TableView;

      public IEnumerable<PageBase> SubPagesList() {
          yield return View3xTitle;
          yield return CombTableView;
          yield return TableView;
      }
 }

You can then access specific properties and iterate over them like this:

DiamondListingPage x = new DiamondListingPage();
x.View3xTitle = null // accessing individual property

foreach (PageBase p in x.SubPagesList()) {
    // do something with p
} 

Also in SubPagesList method you can control which properties will be iterated over.