Question 86526 in ASP.NET Question posted in
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how to link HTML with C# – Asp.net

I’ve tried to do something from another post, didn’t work.
How do I combine those two codes?
HTML CODE:

@using Microsoft.AspNetCore.Identity
@using SvivaTeamVersion3.Areas.Identity.Data

@inject SignInManager<ApplicationUser> SignInManager
@inject UserManager<ApplicationUser> UserManager

<p><button onclick="" class="w3-button w3-padding-large w3-white w3-border"><b>ADD NEW REPORT »</b></button></p>

Code that I want to add to the onclick event:

if (SignInManager.IsSignedIn(User))
    {
        <script>
            window.location.href = "http://stackoverflow.com";
        </script>
    } else {
        <script>
            window.location.href = "http://stackoverflow.com";
        </script>
    }

Controller (Home Controller) – I added here the checkLoginStatus function to handle the problem right now :

using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Logging;
using SvivaTeamVersion3.Models;
using System.Diagnostics;

namespace SvivaTeamVersion3.Controllers
{
    //[Authorize]
    public class HomeController : Controller
    {
        private readonly ILogger<HomeController> _logger;

        public HomeController(ILogger<HomeController> logger)
        {
            _logger = logger;
        }

    public IActionResult Index()
            {
            return View();
        }

        public IActionResult Privacy()
        {
            return View();
        }

        [ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)]
        public IActionResult Error()
        {
            return View(new ErrorViewModel { RequestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier });
        }

        public ActionResult CheckLoginStatus()
        {
            if (!User.Identity.IsAuthenticated)
                return Redirect("/Identity/Account/Login");
            return View("~/Views/Report/Create.cshtml");
        }
    }
}
Tags:

2

Answers


  1. 0

    As I understood that you need a conditional access to your page based on User authentication state, so this should work:

    @using Microsoft.AspNetCore.Identity
@using SvivaTeamVersion3.Areas.Identity.Data

@inject SignInManager<ApplicationUser> SignInManager
@inject UserManager<ApplicationUser> UserManager

<p><button onclick="" class="w3-button w3-padding-large w3-white w3-border"><b>ADD NEW REPORT »</b></button></p>

@if (SignInManager.IsSignedIn(User))
{
    <script>
        window.location.href = "http://stackoverflow.com";
    </script>
} else {
    <script>
        window.location.href = "http://stackoverflow.com";
    </script>
}

    A better approach would be to use OnGet() method in your razor page model:

    public IActionResult OnGet()
{
    if(SignInManager.IsSignedIn(User))
        Redirect("http://stackoverflow.com");
    else
        Redirect("http://stackoverflow.com");
}

    Update: based on the update to question your application is using MVC. So, for authentication it’s would be easier to use the [Authorize] attribute. I’ll assume that your Create page
    exists in ReportController according to view path provided in your question:

    @* Add a link to your page *@
<a asp-action="Create" asp-controller="Report">Privacy</a>

public class ReportController : Controller
{
    [Authorize]
    public IActionResult Create()
    {
        return View();
    }
}

    This will prevent anonymous users from accessing that page without authentication, or you can do any other logic required before returning the view and based on that redirect to another page.

    Otherwise, you can use a form and submit to specific action in your controller then execute whatever logic you need:

    <form asp-action="CheckLoginStatus" asp-controller="Home">
    <button type="submit">Add Report</button>
</form>

    It’s easier to use RedirectToAction("Create", "Report") when redirecting internally between controllers/actions and use Redirect() for external links.

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  2. 0

    If you want to use c#code in js,you can try to use:

    <script>
var url;
$(function(){
    [email protected](User)?"url1":"url2";
    window.location.href =url;
})
</script>
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