Asp Core,如何创建Paging?

Asp Core, How to create Paging?

我想使用 PagingList<T>.CreateAsync() 在索引视图中创建 PagedList 但在行 var modelPaging = await PagingList<UserListViewModel>.CreateAsync(model, 10, page);:

中出现以下错误

can not convert from system.collection.Generic.List<> to system.linq.IorderedQueryable<>

我的操作代码:

    [HttpGet]
    public async Task<IActionResult> Index(int page = 1)
    {

        List<UserListViewModel> model = new List<UserListViewModel>();
        model = _userManager.Users.AsNoTracking().Select(u => new UserListViewModel
        {
            Id = u.Id,
            FullName = u.FirstName + " " + u.LastName,
            Email = u.Email
        }).OrderBy(u => u.Id).ToList();
        var modelPaging = await PagingList<UserListViewModel>.CreateAsync(model, 10, page);

        return View(modelPaging);
    }

和 UserListViewModel 视图模型:

public class UserListViewModel
{

    public string Id { get; set; }

    public string FullName { get; set; }

    public string Email { get; set; }

    public string RoleName { get; set; }

}

我应该对我的代码进行哪些更改?

我在这里问了另一个关于这个问题的问题

错误很明显,告诉您 CreateAsync 需要 IOrderedQueryable 但您提供的数据已经从数据库中检索。您应该传递查询本身。删除 ToList;

var query = _userManager.Users.AsNoTracking().Select(u => new UserListViewModel
{
    Id = u.Id,
    FullName = u.FirstName + " " + u.LastName,
    Email = u.Email
}).OrderBy(u => u.Id);
var modelPaging = await PagingList<UserListViewModel>.CreateAsync(query, 10, page);

PagingList 的主要目的是直接从数据库而不是内存中应用分页。