To logout from the application I have created a link on te master page.
Now when I click on the LogOut link its redirect to the LogOut action and in the LogOut action its delete all the session, but when I click on the back button of the browser its get back to the previous page and sessions are still alive. Does anyone have the solution of this problem. The pages you visit in your browser are cached depending upon your caching settings in the browser.
You need to prevent caching in ASP. After you do that try clearing your browsers cache and try loading the page again.
Logout and try the back button. You should get a message saying that the page no longer exists or something. There are many ways of preventing your ASP. One such way is to do this before the page is rendered. Hi got the solution. Actually I have used toke to login into my module and the token timeout was 5 second.
And if I click on the back button after the 5 second then session does not create.
To solve this problem I does not allow the user to go to back through the browser. For this I have used the following code. Learn more. Asked 10 years, 3 months ago. Active 7 years, 6 months ago. Viewed 33k times. Clear ; Session. Active Oldest Votes. Clear ; FormsAuthentication. Nicolai Schlenzig 6 6 silver badges 15 15 bronze badges.
SetExpires DateTime. AddMinutes -1 this. SetCacheability HttpCacheability. NoCache this. Hemanshu Bhojak Hemanshu Bhojak Is it really a good idea to do this? Should I be setting these explicitly on each View?
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When I try to log out user I am facing an error coz HttpContext is null. I mean here HttpContext. Authentication is null. For this you need to define a ActionFilter attribute and there you need to redirect the user to the respective controller action.
There you need to check for the session value and if its null then you need to redirect the user. Here is the code below Also you can visit my blog for detail step :. That is totally expected since you cannot simply create new AccountControllercall accountController.
SignOut and expect it to work. This new controller is not wired up into the MVC pipeline - it does not have HttpContext and all its other requirements to be able to work.
You should log users out in response to a request that they have made. Open AccountController and take a look at the LogOff method:. Here AuthenticationManager. Whenever such request arrives the ASP. After that the LogOff method will be called where you can actually execute AuthenticationManager. SignOut. Also in the default ASP. The only problem I have is there's no redirect to Login so I get a view not found error because the view I logged out from is under an [Authorize] attribute.
I thought the automatic redirect was built in when a user is not authorized by this code block Learn more.In the previous article, we set up a project with identity database. In this article, we shall use that project to implement user authentication functionalities using ASP. We already know that the Configure method in the Startup class is used to configure the application's middleware.
Currently, it has the following code which directly writes a " Hello World " response. We shall remove it and add MVC which will process the request. In this, we will create two viewmodel s for using in Registration and Login page. The important point here is the [Authorize] attribute that we are using with the controller. This implies that if the user is not authenticated, he can't access this endpoint.
The Account controller looks like this for brevity, I am only showing the public method signatures :. We can see that all methods related to Registration or Login have [AlllowAnonymous] attribute so that only logged in users can access them. They both are part of ASP.
NET Core Identity and come through dependency injection. The Views are created in the Views folder. I am not explaining much about them as they are pretty standard MVC Views.
In that i am able to redirect to the login page. But the user is not logging off. Just it is redirecting to that page.
But it is not logging out. How can i log out the session in that case.
Any help is appreciated. Use [Authorize] above the actions which you don't want the user to do after logging out. This you can do by adding this attribute above actions individually or marking the entire class with [Authorize] so that all methods can now be only be accessed by authenticated users.
Learn more. Asked 7 years, 3 months ago. Active 2 years, 4 months ago. Viewed 12k times. I have used the below link to end a session. Jonathan Jonathan 1, 7 7 gold badges 30 30 silver badges 51 51 bronze badges.
Active Oldest Votes. Short Answer : Use FormsAuthentication. Hope this helps. Yasser Shaikh Yasser Shaikh In the code before i redirection i am calling a ajax function to one of the controller and in the action i have given the FormsAuthentication. SignOut DefaultAuthenticationTypes. ApplicationCookie ; This should work in newer versions. Nishan Chathuranga Nishan Chathuranga 1, 1 1 gold badge 9 9 silver badges 20 20 bronze badges.
Sign up or log in Sign up using Google.In this article you will learn how to make login, register, and logout screens with real-world functionality using Razor and Entity Framework data models. Entity Framework EF is an object-relational mapper that enables. NET developers to work with relational data using domain-specific objects. It eliminates the need for most of the data-access code that developers usually need to write.
The Model-View-Controller MVC pattern separates the modeling of the domain, the presentation, and the actions based on user input into three separate classes [Burbeck92]. Model The model manages the behavior and data of the application domain, responds to requests for information about its state usually from the viewand responds to instructions to change state usually from the controller. Image 1. Image 2. This is my model class that is generated when we configure the data model, I just made slight changes.
Image 3. Add namespaces in the controller class:. Add the following div:. Now let's add views for presentation. The best way to add a view is to right-click on the controller's method name and then right-click and "Add View" and select the view engine type and select strongly-typed view and use the layout master page and click "Add".
Image 4. Now hit F5 to run the application and click on the "Register" button and don't put anything in the TextBoxes and click the "Register" button. Image 5. As you can see in the model class, all fields are required so these messages are displayed. Image 6. Now if I put a password value less than 6 characters or more than characters then this message will display:. Image 7. Now insert all values properly, then you will see it will register and data should inserted into the database, now you can login.
In this article we have learned the basic concepts of login using Entity Framework with Razor. View All. Raj Kumar Updated date, May 22 View The view manages the display of information. NET Entity data Model. To learn how to configure an ADO. Next Recommended Article. Getting Started With. NET 5. Getting Started with ML. NET Core.In this chapter, we will discuss the login and logout feature.
Logout is rather simple to implement as compared to login. Let us proceed with the Layout view because we want to build a UI that has some links.
This will allow a signed in user to log out and also display the username. There is a User property that is available inside every Razor view and we want to build a UI that will display the logged in user's name. An extension method IsSignedIn is also available here.
We can invoke this method and if it returns true, this is where we can place some markup to display the username, display a logout button. Now if the user is signed in, we can display the user's username using the helper method GetUserName.
We will have to build a logout button inside a form, which will be posted to the web server. We will force this to be a post, and when the user submits this form, all we need to do is hit on the Logout action, which we will implement through the AccountController, and logout the user.
If the user is not signed in and we have an anonymous user, then we need to show a link that will go to the AccountController, specifically to the Login action, and it can display the text Login. Let us now go to the AccountController and implement the logout action first as in the following program. This action responds only to the HttpPost. This is an async action. We will have to call another asynchronous method on the Identity framework. The user context has changed now; we now have an anonymous user.
The view will be redirected to the home page and we will go back to the list of employees. Let us now proceed and build our Login feature. Here, we will need a pair of actions, one that responds to an HttpGet request and displays the form that we can use to log in, and one that responds to an HttpPost request.
To begin with, we will need a new ViewModel to pull the login data because logging in is very different from registering.
How to Make Custom Login, Register, and Logout in MVC 4 Using Razor and EF
So, let us add a new class and call it LoginViewModel. The third piece of information must be login UIs. This is the choice between do we want a session cookie, or do we want a more permanent cookie. To allow this feature we have added a Boolean property RememberMe and we have used a Display annotation. Now when we build a label, the text Remember Me gets displayed with a space. The last information that we actually want as part of this ViewModel is to have a property that will store the ReturnUrl.
Let us now add the Login action that will respond to the Get request as shown in the following program. Let us add the following code in the Login. In this login view, we have set the title of the page to Login and then we have a form that will post to the AccountLogin action.
We need to use a tag helper, asp-route-returnurlto make sure that the ReturnUrl is there in the URL that the form posts back to. We need to send that ReturnUrl back to the server so that if the user does successfully log in, we can send it over to the place they were trying to get to. Anything that you add after asp-route- id or returnurl, whatever you have there, that will go into the request somewhere, either into the URL path or as a query string parameter.
This action that responds to HttpPost. This will be an Async method because we will need to call into the Identity framework and return a task or IActionResult.
We need to to check if the ModelState is valid. The PasswordSignInAsync method will return a result and if the result succeeded, we know the user has logged in successfully. If the user has just logged in and does not have any specific place to go, we will redirect the user to the Index action of the HomeController.
We might be in a situation where the user provides an invalid password or an invalid username. We also need to add a model error that prompts if there is an Invalid login attempt. This helps the user to know if something went wrong.The most important question is how password are protected. If you store the password in ecryption format then its a possibility to revert to the pain-text value using encrypted output.
Here is the best solution for storing the password in database. We Encrypt the password using one-way hashing algorithms. We dont need to know the password we just verify the inputed password. So, When the user attempts to login, we create a one HASH Value of password and one unique field which is entered by user and SALT then it is checked against the hash of their real password which are retrieved from the database.
If the hashes match, the user is granted access. If not, the user is told they entered invalid login credentials. What is SALT key? A salt is random data that is used as an additional input to a one-way function that "hashes" a password. It is uses mathematical formulas to produce sequences of random numbers. What is password hasing? Hashing performs a one-way transformation on a password, turning the password into another String, called the hashed password.
They also have the property that if the input changes by even a tiny bit, the resulting hash is completely different. What is SHA? NET 4. Then Click on the "Add" then click on the "New Item Right click on "controller folder" select "Add" the click on "controller".
AntiForgeryToken: The anti-forgery token can be used to help protect your application against cross-site request forgery.
STEP When login page initialization, at that time we need to check that current session is logout. For this, we create a two methods as "EnsureLoggedOut" and "Logout".
How to clear all session in mvc5
ValidateAntiForgeryToken: The feature doesn't prevent any other type of data forgery or tampering based attacks. To use it, decorate the action method or controller with the ValidateAntiForgeryToken attribute and place a call to Html.Admin Roles - Part 1: How to add jij.disputems6001b.pw MVC Admin Roles
AntiForgeryToken in the forms posting to the method. Finally we move to create a one method for validate username and password. Because it check that user is login or not before any page initialize. Create a class name as "CheckAuthorization.