How To Prevent the Same User ID from Logging in From Multiple Devices Using ASP.NET MVC4
Maintain a flag in database; upon every login/out update the flag. For instance, upon every authentication request you can reject the login request if the flag is already true. Alternatively, you can maintain a list of users in the Application object and nicedatingusa.comns to see if it already exists. Feb 01, · There are ways by which you can do. Keep a flag in database, where you will update the value once user logs in, then when user logs out then make it false again. So when user logs again, then if flag comes to be true, then show error message that "Multiple login is not allowed".
Home Categories. Restrict Prevent user to login multiple times using same credentials in ASP. Need Help? Our Support Team is here to help. Ask Question. Here Mudassar Ahmed Khan has explained with an example, a simple login form using Forms Authentication which validates user login from database and restricts prevents user to login multiple times using same credentials in ASP.
Net using C and VB. If the user is already logged in and he tries to access prevetn Login page then he is redirected use to the Home page i. In this article I will explain with an example, a simple login form using Forms Authentication which validates user login from database and restricts prevents ;revent to login multiple times using same credentials in ASP.
Note : The SQL for creating the database how to authorise a new computer on itunes provided in the attached sample code. This example consists of two pages Login page Login. This is the login form which will do the following Authenticate user by verifying Username and Password.
Make sure user has activated his account. If user is already logged in, he will be directly send to the Home page which is set as DefaultUrl in the FormsAuthentication setting of the Web. Config file. HTML Markup. Net Login control for which the OnAuthenticate event handler has been specified.
You will need to import the following namespaces. Imports System. Stored Procedure to Validate the User Credentials. The following stored procedure is used to validate the user credentials, this stored procedure first checks whether the username and password are correct else returns If the username and password are correct but the user has not been activated then the code returned is If the username and ;revent are correct and the user account has been activated then UserId of the user is returned by the stored procedure.
Validating the User Credentials. The below event handler gets called when the Log In button is clicked. Here the Username and Password entered by the user is passed to the stored procedure and its status is captured and if the value is not -1 Username or password incorrect or -2 Account not activated then the user is redirected to the Home page using FormsAuthentication RedirectFromLoginPage method. ConnectionStrings[ "constr" ]. AddWithValue " Username"Login1.
UserName. AddWithValue " Password"Login1. Password. Open. ToInt32 cmd. ExecuteScalar. Close. RedirectFromLoginPage Login1. UserName, Login1. RememberMeSet. ConnectionStrings "constr". Using con As New SqlConnection constr. End Using. Select Case aap.net. Case Exit Select. Case Else. End Select. End Sub. Home Page. After successful login user will be redirected to how to convert a cad file to pdf page.
In this page I have made use of ASP. Redirect User to Login page if not logged in. Inside the Page Usdr event of the Home page, first we verify whether the User is authenticated using the IsAuthenticated property.
RedirectToLoginPage. EventArgs Handles Me. If Not Me. IsAuthenticated Then. End If. Restrict Prevent user to login multiple times using same credentials. Inside the Ssme Load event of the Login page, first we verify whether the User is authenticated using how to use a camp percolator IsAuthenticated property. If the user is authenticated then he is redirected directly to the Home page which is set as DefaultUrl in the FormsAuthentication setting of the Web.
Redirect FormsAuthentication. DefaultUrl. If Me. Config Configuration. You will need to add the following configuration in the Web. Related Articles. Add Comments. Thank you for the feedback. The comment is now awaiting moderation. You will be mltiple via email when the author replies to your comment. You can add your comment about this article using the form below. Make sure you provide a valid email uesr else you won't be notified when the author replies to your comment Please uow that all comments are moderated and will be deleted if they are Not relavant mu,tiple the article Spam Advertising campaigns or links to other sites Abusive content.
Nov 22, · nicedatingusa.com Here Mudassar Ahmed Khan has explained with an example, a simple login form using Forms Authentication which validates user login from database and restricts (prevents) user to login multiple times using same credentials in nicedatingusa.com using C# and nicedatingusa.com Luckily now nicedatingusa.com Identity framework provides a simple and clean way of preventing users sharing their details or logging-in twice from different computers. 2-Factor Authentication One of the most simple ways to prevent password-sharing is make 2-factor authentication mandatory. Jun 08, · home > topics > nicedatingusa.com > questions > how to prevent multiple login for same user in nicedatingusa.com Post your question to a community of , developers. It's quick & easy.
Post your question to a community of , developers. Sign in to post your reply or Sign up for a free account. Sign in Join Now. New Post. Hi, I want to prevent multiple user login for same user in asp. How can I achieve. Note: I want to control without database concepts. Follow Post Reply. If you want to prevent same login from multiple places..
Frinavale 9, Expert Mod 8TB. This answer will depend on how you implement the login component of your application. Most of the time the login is associated with the browser that the user is working with. This means that a user can login using one browser and a cookie is set whether it be a Session Identifier cookie, or a cookie that contains authentication ticket. Cookies set for one web browser say Internet Explorer are not available in another web browser say FireFox.
So, in your server side code it's not enough to simply check the user's Session, or the authentication cookie You're going to have to store something server side that checks if the userID is "logged in". You could consider using Cache to store the user's ID when the log in You can set Cache entries to time out after a while too You could also set a application variable There are a lot of ways to implement such a solution. Kiti 1. Hi Frinny, I liked your post. I am beginner in. Can you please send me a sample code for what you mentioned above?
Thanks a lot in advance. I don't really have any sample code. If you do not have a database for your users then you can use the web config. Post Reply. Similar topics. NET Framework. Prevent multiple instances of MdiChild form? Preventing same user from logging twice. How to reject the same user to login twice by using Session? How to implement multiple login forms? Li last post: by.
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