如何从数据库中获取用户数并在.NETCore中的按钮上显示

对于用户数,您可以尝试

public class HomeController : Controller
{
    private ApplicationDbContext _context;
    public HomeController(ApplicationDbContext context)
    {
        _context = context;
    }
    public IActionResult Index()
    {
        return View();
    }        

    public IActionResult About()
    {
        ViewData["UserCount"] = _context.Users.Count();
        ViewData["Message"] = "Hello Word";

        return View();
    }      
}

对于显示count on按钮,您可以尝试

@{
    ViewData["Title"] = "About";

}
<h2>@ViewData["Title"].</h2>
<h3>@ViewData["Message"]</h3>

<p>Use this area to provide additional information.</p>
<button>@ViewData["UserCount"]</button>