c# - 对列表进行排序并为每个项目赋予新的排序索引

Question

假设我有 3 个菜单项。每个里面都有(例如)5 个链接。所以我有这样的东西:

//This is just some test-code. normally i''ll get the data from a database
List<NavigationModel> navigation = new List<NavigationModel>();
Random randomInt = new Random();

for (int i = 0; i < 5; i++)
{

    NavigationModel m = new NavigationModel();
    m.MenuName = "Users";
    m.LinkName = "Link (" + i + ")";
    m.ControllerName = "AAA";
    m.ActionName = "Function" + i;
    m.SortingMenu = 5;

    navigation.Add(m);
}

for (int i = 0; i < 5; i++)
{
    NavigationModel m = new NavigationModel();
    m.MenuName = "Help";
    m.LinkName = "Link (" + i + ")";
    m.ControllerName = "BBB";
    m.ActionName = "Function" + i;
    m.SortingMenu = 10;

    navigation.Add(m);
}

for (int i = 0; i < 5; i++)
{
    NavigationModel m = new NavigationModel();
    m.MenuName = "Home";
    m.LinkName = "Link (" + i + ")";
    m.ControllerName = "CCC";
    m.ActionName = "Function" + i;
    m.SortingMenu = 2;

    navigation.Add(m);
}

navigation = navigation.OrderBy(x => x.SortingMenu).ToList();

如您所见，我将获得 3 个正确排序的菜单项，但我需要从 0 开始排序，然后是 1,2 ...

如果没有硬编码或数据库更新命令，我该如何做到这一点？

Answer 1

LukeHennerleys 的回答可能是更高的标准，但我宁愿用一个简单的 for-loop 来改变 SortingMenu 的值。如果您已经对列表进行排序，这应该可以解决问题。

for (int i = 0; i < navigation.Count; i++)
{
    navigation[i].SortingMenu = i;
}