c# - MenuItemCollection vs. List<MenuItem> -

Recently I wrote a piece of C # code that uses the Lambda expression:

  var dynMenu = new list & lt; MenuItem & gt; (); // DynMenu to add some code to menu items (! DynMenu.Any (x => x.Text == Controller)) {// Something}  

My While going to code, I came to know that each menu item has a property called Child ITEMs, which is the menu item type, it is important, I think I will replace this menu item with my menu list.

To change the first row:

  var dynMenu = new MenuItemCollection ();  

I have noticed that this menu contains any extension methods such as "any ", "all & lt;>", "first" and "etc" in the altemclip type Are not there. strange.

Is there any way to use Lambda expression?

Do I just "list" "?

is a .NET 1.1 class. This does not apply to any common archive interface, especially, IEnumerable & lt; MenuItem & gt; .

Since it is not only IEnumerable and not IEnumerable & lt; MenuItem & gt; , LINQ provides all the extension methods for which this does not work, however, you can get them back by:

  if (dynMenu.Cast & lt; MenuItem & gt; (). Any (x => x.Test == Controller)) {// ...  

In the extension method IEnumerable to IEnumerable & lt; T & gt; , other LINQ extensions change to provide access to the methods.