asp.net core page not found - asp.net-mvc

Question

I have error "Page not found" on my website.
This is what i have came up with.
Error occurred to clients few times without me knowing exact moment
When i tested it it ALWAYS happens when i restart my website asp.net server but under some circumstances which i will describe later
It happens in some controllers but in some not
It happens only until i open some controller that will load website, then all other works too.
It happens only on published website and not in my local environment.
So first line is clear and doesn't need explanation.
Second line:
What i have tested to get this error is i shut down my server and then start it again. After it i try going to mywebsite.com/User and error comes.
Third line:
It only happens in controllers /User and /Kalkulator but not in / or /Proizvodi
Forth line:
When i open controller /User and refresh it multiple times it doesn't load but when i go to / and then to /User it loads.
Here are my controllers with their views. I will only provide /User and /Kalkulator since there is easiest to see what happens.
public class UserController : Controller
{
public IActionResult Index()
{
//Debug log are control lines that write to my txt file but they are never reached on first time going to this controller, but when i do fourth step they do reach.
Debug.Log(null, "User/Index pocetak", Debug.Type.CasualChange, Request);
try
{
Debug.Log(null, "User/Index Checking isLogged", Debug.Type.CasualChange, Request);
if (Networking.IsLogged(Request))
{
Debug.Log(null, "User/Index Checking isAdmin", Debug.Type.CasualChange, Request);
if (Networking.IsAdmin(Request))
{
Debug.Log(null, "User/Index Return redirect admin", Debug.Type.CasualChange, Request);
return Redirect("/Admin?select=POR");
}
else
{
Debug.Log(null, "User/Index Return redirect /Proizvodi", Debug.Type.CasualChange, Request);
return Redirect("/Proizvodi");
}
}
Debug.Log(null, "User/Index Creting new user class", Debug.Type.CasualChange, Request);
AR.TDShop.User u = new AR.TDShop.User();
Debug.Log(null, "User/Index Return view with user class", Debug.Type.CasualChange, Request);
return View(u);
}
catch (Exception ex)
{
Debug.Log(null, "User/Index catch error", Debug.Type.CasualChange, Request);
return View("Error", ex.ToString());
}
}
User View
#model AR.TDShop.User
#{
ViewData["Title"] = "Profi kutak";
}
<style>
#Login {
margin: auto;
position: relative;
width: 400px;
text-align: center;
margin-top: 100px;
border-radius: 10px;
border: 1px solid red;
}
#Login input {
margin-top: 10px;
text-align: center;
height: 40px;
font-size: 30px;
width: 60%;
}
#Login button {
margin-top: 20px;
margin-bottom: 20px;
width: 200px;
height: 40px;
font-size: 18px;
border: none;
background-color: #ff0000;
border-radius: 0px 0px 20px 20px;
color: white;
font-weight: bolder;
}
#Login button:hover {
background-color: #ff4d4d;
}
#PostaniClan button:hover {
background-color: lawngreen !important;
color: black !important;
}
</style>
#using (Html.BeginForm("Login", "User", FormMethod.Post, new { enctype = "multipart/form-data" }))
{
<div id="Login">
<p style="padding-top: 10px; padding-bottom: 10px; border-radius: 10px 10px 0 0; color: white; background-color: red; font-weight: bolder; font-size: x-large">Logovanje</p>
#Html.TextBoxFor(x => x.Name, new { #placeholder = "username" })
<br />
#Html.TextBoxFor(x => x.PW, new { #placeholder = "password", #type = "password" })
<br />
<button type="submit">Potvrdi</button>
</div>
}
<div style="text-align: center; margin-top: 30px; margin-bottom: 30px" id="PostaniClan">
<button onclick="window.location.href='/Majstori/Registracija'" style="background-color: green; color: white; border-radius: 20px; padding: 10px 20px 10px 20px;">Postani član!</button>
</div>
}
As you can see in user controller/view there are few other commands that are not shown here but i think you do not need them and you will get it when you take a look at /Kalkulator controller which also doesn't works and here it is:
public class KalkulatorController : Controller
{
public IActionResult Index()
{
return View();
}
}
and here is the view:
#{
ViewData["Title"] = "Kalkulator";
}
<div class="main-wrapper">
<div class="card bg-info text-center" style="width: 18rem;">
<div class="card-body">
<h5 class="card-title">GKP - Plafon</h5>
<p class="card-text">Izracunajte utrosak materijala koji Vam je potreban za izradu spustenog plafona u gips karton sistemu.</p>
Izracunaj!
</div>
</div>
<div class="card bg-info text-center" style="width: 18rem;">
<div class="card-body">
<h5 class="card-title">GKP - Zid (oblaganje)</h5>
<p class="card-text">Izracunajte utrosak materijala koji Vam je potreban za oblaganje postojeceg zida.</p>
Izracunaj!
</div>
</div>
<div class="card bg-info text-center" style="width: 18rem;">
<div class="card-body">
<h5 class="card-title">GKP - Zid (pregradjivanje)</h5>
<p class="card-text">Izracunajte utrosak materijala koji Vam je potreban za izradu novog pregradnog zida.</p>
Izracunaj!
</div>
</div>
</div>
As you can see it is pure HTML and it doesn't work....
Here is my /Proizvodi controller which works (it has a lot of commands so i will display only index and view)
public IActionResult Index(int? GrupaID, int? PodgrupaID, int? V, string Pretraga)
{
ProizvodiModel pm = new ProizvodiModel(GrupaID, PodgrupaID, V, Request);
pm.Tag = Pretraga;
return View(pm);
}
VIEW:
#model ProizvodiModel
#{
ViewData["Title"] = "Proizvodi";
List<Tuple<int, double>> CeneZaKorisnika = new List<Tuple<int, double>>();
if (Networking.IsLogged(Context.Request))
{
CeneZaKorisnika = AR.TDShop.User.GetVPCene(Model.User.UserID);
CeneZaKorisnika.Sort((x, y) => x.Item1.CompareTo(y.Item1));
}
if (!Model.Majstor)
{
<style>
.proizvod {
margin-bottom: 5px !important;
}
</style>
}
else
{
<style>
.proizvod {
margin-bottom: 103px !important;
}
</style>
}
}
<link rel="stylesheet" type="text/css" href="~/css/ProizvodiIndex.css" />
<div class="main-wrapper">
<div id="left" class="col-sm-3" style=" color: white">
<div style="width: 100%; margin-top: 40px; margin-bottom: 40px; text-align: center">
<img src="~/images/Logo_Long.png" style="width: 90%;" />
</div>
#if (Model.Majstor)
{
Model.User.UcitajPorudzbine(Context.Request);
if (Model.User.Porudzbine.Count > 0)
{
<div style="background-color: red; margin-top: 10px; padding-top: 10px; padding-bottom: 10px">
<h3 style="text-align: center; margin: 0;">Skorašnje porudžbine</h3>
#{
int n = 5;
<table id="PorudzbineTable" style="width: 100%;margin-top: 10px; background-color: #ffbbbb; color: black">
#foreach (AR.TDShop.Porudzbina p in Model.User.Porudzbine)
{
<tr onclick="window.location.href='/Porudzbina?ID=' + #p.PorudzbinaID">
<td style="padding-left: 10px">#p.BrDokKom</td>
#switch (p.Status)
{
case AR.TDShop.Porudzbina.PorudzbinaStatus.NaObradi:
<td>Na obradi!</td>
break;
case AR.TDShop.Porudzbina.PorudzbinaStatus.CekaUplatu:
<td>Čeka uplatu!</td>
break;
case AR.TDShop.Porudzbina.PorudzbinaStatus.ZaPreuzimanje:
<td>Za preuzimanje!</td>
break;
case AR.TDShop.Porudzbina.PorudzbinaStatus.Preuzeto:
<td>Realizovano!</td>
break;
case AR.TDShop.Porudzbina.PorudzbinaStatus.Stornirana:
<td>Stornirano!</td>
break;
}
</tr>
n--;
if (n <= 0)
{
break;
}
}
</table>
<button id="SvePorudzbine" onclick="window.location.href='/User/Porudzbine'" style="text-align: center; margin-top: 10px; background-color: white; color: black">Sve porudzbine</button>
}
</div>
}
<div id="ObjasnjenjeCene">
<p>Cena bez PDV-a je iskazana crvenom bojom!</p>
</div>
}
<div style="padding: 15px; background-color: #5a5cd4; margin-bottom: 40px">
<button class="#if (#Model.ActivateGrupa == null && Model.ActivatePodgrupa == null) { #Html.Raw("activate") }" onclick="GoTo('/Proizvodi')">Svi proizvodi</button>
#foreach (GrupaModel g in Model.Grupe)
{
<button class="#if (Model.ActivateGrupa != null && Model.ActivateGrupa == g.GrupaID)
{
#Html.Raw("activate")
} else if (#Model.ActivatePodgrupa != null)
{
if(PodgrupaModel.GetParent((int)Model.ActivatePodgrupa) == g.GrupaID) { #Html.Raw("activate") }
}"
onclick="GoTo('/Proizvodi?GrupaID=#g.GrupaID')">
#g.Naziv
</button>
}
</div>
<div id="PredloziProizvod" style="border-top: black 2px; color: black;">
<button id="predloziButton" style="width: 100%; text-align: center">Predloži proizvod</button>
<input hidden type="text" placeholder="Naziv proizvoda" />
<input hidden type="text" placeholder="Kataloski broj" />
<input hidden type="text" placeholder="Opis primene" />
<button hidden id="PosaljiPredlogProizvoda">Posalji</button>
</div>
</div>
<div id="right" class="col-sm-9">
<div id="PretragaProizvoda">
<input type="text" placeholder="Pretraga..." value="#Model.Tag" />
<button id="tw" style="float: right" onclick="ToggleView(this)" value="0"><img src="~/images/View2.png" style="width: 25px" /></button>
</div>
<br />
#if (Model.PodGrupe.Count > 0)
{
string cls = "";
if (Model.ActivatePodgrupa == null)
{
cls = "aktivnaPodgrupa";
}
<div id="PodGrupe">
<button class="PodGrupa #cls" onclick="GoTo('/Proizvodi?GrupaID=#PodgrupaModel.GetParent((int)Model.PodGrupe[0].PodgrupaID))'">
<p>Svi proizvodi grupe</p>
</button>
#foreach (PodgrupaModel pgm in Model.PodGrupe)
{
cls = "";
if (pgm.PodgrupaID == Model.ActivatePodgrupa)
{
cls = "aktivnaPodgrupa";
}
<button class="PodGrupa #cls" onclick="GoTo('/Proizvodi?PodgrupaID=#pgm.PodgrupaID')">
<p>#pgm.Naziv</p>
</button>
}
</div>
<hr style="border-bottom: 2px solid black" />
}
#foreach (ProizvodModel p in Model.Proizvodi)
{
if (p.Aktivan)
{
string proizvodStil;
string buttonStil;
if (p.Klasifikacija == 0)
{
proizvodStil = "color: dimgray;";
buttonStil = "background: linear-gradient(to bottom, white, dimgray 20%, dimgray 80%, white 100%);";
}
else if (p.Klasifikacija == 2)
{
proizvodStil = "color: darkorange;";
buttonStil = "background: linear-gradient(to bottom, white, darkorange 20%, darkorange 80%, white 100%);";
}
else
{
proizvodStil = "color: darkgreen;";
buttonStil = "background: linear-gradient(to bottom, white, darkgreen 20%, darkgreen 80%, white 100%);";
}
<div class="proizvod ppppp #if (Model.Majstor) { #Html.Raw("korpa"); } normal"
#Html.Raw("onclick = \"GoToP('" + #p.ROBAID + "')\"") ;
style="#proizvodStil">
<p class="katBr">#p.KatBr</p>
<img src="#p.Slika" />
<p class="nazivProizvoda">#p.Naziv</p>
#if (Model.Majstor)
{
try
{
int NivoZaKorisnika = Model.User.Cenovnik_grupa.Where(x => x.Item1 == p.Cenovnik_GrupaID).Select(t => t.Item2).FirstOrDefault();
double VPCena = CeneZaKorisnika.Where(x => x.Item1 == p.ROBAID).FirstOrDefault().Item2;
double MPCena = VPCena + (VPCena * p.PDV / 100);
if (MPCena > 0)
{
<p class="vpcena">#VPCena.ToString("#,###.00") / #p.JM</p>
<p class="mpcena">#MPCena.ToString("#,###.00") / #p.JM</p>
if (Model.User.Vrsta == UserModel.Tip.Majstor)
{
<button style="#buttonStil" onclick="GoToP(#p.ROBAID); event.stopPropagation();"> KUPI!</button>
}
}
if (Model.User.Vrsta == UserModel.Tip.Administrator)
{
<button style="#buttonStil" onclick="Edit(#p.ROBAID); event.stopPropagation();">Detalji!</button>
}
}
catch (Exception ex)
{
#:alert("#ex.ToString()");
}
}
</div>
}
}
</div>
</div>
<div id="AlertPopUp">
</div>
<script src="~/js/AlertBox.js"></script>
<script>
var alb = new AlertBox($("#AlertPopUp"));
var currRID = -1;
var overwrite = false;
function GoTo(link) {
if ($("#tw").val() == 1) {
if (link.indexOf('?') > -1) {
window.location.href = link + "&V=1";
}
else {
window.location.href = link + "?V=1";
}
}
else {
window.location.href = link;
}
}
function GoToP(link) {
if ($("#tw").val() == 1) {
if (link.indexOf('?') > -1) {
window.location.href = link + "&V=1";
}
else {
window.location.href = link + "?V=1";
}
}
else {
window.location.href = "/Proizvod?ID=" + link;
}
}
function Edit(id) {
GoTo("/Proizvodi/Edit?ID=" + id);
}
function ToggleView(element) {
var curr = $(element).val();
if (curr == 1) {
$(element).val(0);
$(element).children("img").attr("src", "/images/View2.png");
$(".ppppp").removeClass("proizvod1");
$(".ppppp").addClass("block");
$(".ppppp").addClass("proizvod");
$(".korpa button").html("Dodaj u korpu!");
}
else {
$(element).val(1);
$(element).children("img").attr("src", "/images/View1.png");
$(".ppppp").removeClass("proizvod");
$(".ppppp").removeClass("block");
$(".ppppp").addClass("proizvod1");
$(".korpa button").html("<img src='/Images/cart.png' style='height: 50px;width: 50px;border-radius: 10px;padding: 5px;padding-right: 8px;background-color: #2196F3;' />");
}
}
#{
if(Model.View == 1)
{
#:StartOtherView();
}
}
function StartOtherView() {
$("#tw").val(1);
$("#tw").children("img").attr("src", "/images/View1.png");
$(".ppppp").removeClass("proizvod");
$(".ppppp").removeClass("block");
$(".ppppp").addClass("proizvod1");
$(".korpa button").html("<img src='/Images/cart.png' style='height: 50px;width: 50px;border-radius: 10px;padding: 5px;padding-right: 8px;background-color: #2196F3;' />");
}
$(function () {
var PredloziProizvodBlock = false;
$("#predloziButton").click(function () {
$(this).parent().children("input").each(function () {
if (PredloziProizvodBlock == true) {
$(this).hide();
}
else {
$(this).show();
}
});
if (PredloziProizvodBlock == true) {
$("#PosaljiPredlogProizvoda").hide();
}
else {
$("#PosaljiPredlogProizvoda").show();
}
PredloziProizvodBlock = !PredloziProizvodBlock;
})
$("#PosaljiPredlogProizvoda").click(function () {
$.ajax({
type: "GET",
url: "/Proizvodi/PosaljiPredlogProizvoda",
contentType: "application.json; charset-utf-8",
dataType: "json",
async: false,
success: function (data) {
alert(data);
},
error: function (data) {
alert(data);
}
});
})
$("#PretragaProizvoda input").keyup(function () {
var input = $(this).val().toUpperCase();
$(".proizvod").each(function () {
if ($(this).html().toUpperCase().indexOf(input) >= 0 || input.length == 0) {
$(this).show();
}
else {
$(this).hide();
}
});
});
});
</script>
All views use same layout.
Routing option:
app.UseMvc(routes =>
{
routes.MapRoute(
name: "default",
template: "{controller=Home}/{action=Index}/{id?}");
});

Answer 1

I think your problem with Redirect in you UserController, could your try replace it on RedirectToAction(); It's must be help you.

Answer 2

I found out mistake and it was so easy.
I thought i was checking all my code which is ran when entering some page but i forgot one big part and it is constructor:
private readonly IHostingEnvironment hostingEnvironment;
public ProizvodiController(IHostingEnvironment he)
{
hostingEnvironment = he;
Program.AbsolutePath = hostingEnvironment.WebRootPath;
Debug.FilePath = Path.Combine(Program.AbsolutePath, "Log");
}
public IActionResult Index(int? GrupaID, int? PodgrupaID, int? V, string Pretraga)
{
ProizvodiModel pm = new ProizvodiModel(GrupaID, PodgrupaID, V, Request);
pm.Tag = Pretraga;
return View(pm);
}
I forgot that constructor is accessed each time when you access any page from controller and it sets my AbsolutePath variable which i use later.
When i restart my server he lose all in memory data (which is static variable AbsolutePath) and it is only set when ANY user enter website but since i call it only in 2 controllers, other controllers were not working.
Solution was to add same code to all controllers constructors.