Why are the links not working on the homepage?

Question

ASP.NET

Hello, I am making a website for crowdfunding companies. On the main page, I display: the latest updated companies, the companies with the highest rating, tag cloud, news. I want that when I click on the links, sorting occurs, and when I click on the link button, I go to the page for creating a company.


Here is the main page code:

@page "{id:int?}"
@model IndexModel
@{
    ViewData["Title"] = "Company";
}
<h1>Сайт для ваших краундфандинговых компаний</h1>
<br />
<form asp-page="./Index" method="get">
    <div class="form-actions no-color">
         <p>
            Поиск:
            <input type="text" name="SearchString" value="@Model.CurrentFilter" />
            <input type="submit" value="Search" class="btn btn-primary" />
        </p>
    </div>
</form>
<br />
<a href="/Company/Create.cshtml" type="button" class="btn btn-danger">@Localizer["Создать"]</a>
<br />
<h3>Компании с самым большим рейтингом</h3>
<br />
<div class="table-responsive">
    <table class="table table-hover">
        <thead>
            <tr>
                <th>@Localizer["Название"]</th>
                <th>
                    <a asp-page="./Index" asp-route-sortOrder="@Model.NameSort">
                        @Html.DisplayNameFor(model => model.Company[0].Rating)
                    </a>
                </th>
                <th></th>
            </tr>
        </thead>
        <tbody>
            @foreach (var item in Model.Company)
            {
                string selectedRow = "";
                if (item.ID == Model.CompanyID)
                {
                    selectedRow = "table-success";
                }
                <tr class="@selectedRow">
                    <td>
                        @Html.DisplayFor(modelItem => item.Title)
                    </td>
                    <td>
                        @Html.DisplayFor(modelItem => item.Rating)
                    </td>
                </tr>
            }
        </tbody>
    </table>
</div>
<h3>Обновленные компании</h3>
<br />
<div class="table-responsive">
    <table class="table table-hover">
        <thead>
            <tr>
                <th>Название</th>
                <th>
                    <a asp-page="./Index" asp-route-sortOrder="@Model.DateSort">
                        @Html.DisplayNameFor(model => model.Company[0].EnrollmentDate)
                    </a>
                </th>
                <th></th>
            </tr>
        </thead>
        <tbody>
            @foreach (var item in Model.Company)
            {
                string selectedRow = "";
                if (item.ID == Model.CompanyID)
                {
                    selectedRow = "table-success";
                }
                <tr class="@selectedRow">
                    <td>
                        @Html.DisplayFor(modelItem => item.Title)
                    </td>
                    <td>
                        @Html.DisplayFor(modelItem => item.EnrollmentDate)
                    </td>
                </tr>
            }
        </tbody>
    </table>
</div>
<h3>Облако тэгов</h3>
<br />
<div class="table-responsive">
    <table class="table table-hover">
        <thead>
            <tr>
                <th>@Localizer["Тэги"]</th>
                <th></th>
            </tr>
        </thead>
        <tbody>
            @foreach (var item in Model.Company)
            {
                string selectedRow = "";
                if (item.ID == Model.CompanyID)
                {
                    selectedRow = "table-success";
                }
                <tr class="@selectedRow">
                    <td>
                        @Html.DisplayFor(modelItem => item.Tags)
                    </td>
                </tr>
            }
        </tbody>
    </table>
</div>
<h3>Новости</h3>
<br />
<div class="table-responsive">
    <table class="table table-hover">
        <thead>
            <tr>
                <th>Тема</th>
                <th>Новость</th>
                <th></th>
            </tr>
        </thead>
        <tbody>
            @foreach (var item in Model.Company)
            {
                string selectedRow = "";
                if (item.ID == Model.CompanyID)
                {
                    selectedRow = "table-success";
                }
                <tr class="@selectedRow">
                    <td>
                        @Html.DisplayFor(modelItem => item.Topic)
                    </td>
                    <td>
                        @Html.DisplayFor(modelItem => item.News)
                    </td>
                </tr>
            }
        </tbody>
    </table>
</div>

using Microsoft.AspNetCore.Mvc.RazorPages;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.EntityFrameworkCore;
namespace MyWebSite.Pages
{
    public class IndexModel : PageModel
    {
        private readonly MyWebSite.Data.ApplicationDbContext _context;
        public IndexModel(MyWebSite.Data.ApplicationDbContext context)
        {
            _context = context;
        }
        public string NameSort { get; set; }
        public string DateSort { get; set; }
        public string CurrentFilter { get; set; }
        public string CurrentSort { get; set; }
        public int CompanyID { get; set; }
        public IList<MyWebSite.Models.Company> Company { get; set; }
        public async Task OnGetAsync(string sortOrder, string searchString)
        {
            CurrentFilter = searchString;
            IQueryable<MyWebSite.Models.Company> companyIQ = from s in _context.Company
                                                             select s;
            if (!String.IsNullOrEmpty(searchString))
            {
                companyIQ = companyIQ.Where(s => s.Title.Contains(searchString)
                                       || s.Tags.Contains(searchString));
            }
            //Company = new MyWebSite.Models.Company();
            Company = await _context.Company
                .Include(i => i.UserAssignments)
                .Include(i => i.UserAssignments)
                .Include(i => i.UserAssignments)
                .Include(i => i.UserAssignments)
                .Include(i => i.UserAssignments)
                .Include(i => i.UserAssignments)
                .AsNoTracking()
                .OrderBy(i => i.Title)
                .OrderBy(i => i.Rating)
                .OrderBy(i => i.EnrollmentDate)
                .OrderBy(i => i.Tags)
                .OrderBy(i => i.Topic)
                .OrderBy(i => i.News)
                .ToListAsync();
            switch (sortOrder)
            {case "name_desc": 
                    companyIQ = companyIQ.OrderByDescending(s => s.Rating);
                    break;
                case "Date":
                    companyIQ = companyIQ.OrderBy(s => s.EnrollmentDate);
                    break;
                case "date_desc":
                    companyIQ = companyIQ.OrderByDescending(s => s.EnrollmentDate);
                    break;}
            Company = await companyIQ.AsNoTracking().ToListAsync();
}
}
}

When writing this code, I relied on these tutorials - https://docs.microsoft.com/en-us/aspnet/core/data/... and https://docs.microsoft.com/en-us/aspnet/core /data/... .
If I forgot to indicate something, here is a link to my project - https://github.com/Parsifal31017/MyWebSite.git . Thanks in advance.