Asp.net manual login page

All the HashString method does is return the hash of the string passed to it. But still, why are we hashing the password? It is never advisable to store passwords as free text in the database. You should either encrypt them or hash them. The advantage of hashing is that a hash is irreversible. So if a hacker gets his hands on your database, with all the user passwords inside, he cannot do anything with it.

The rest of the code just opens the connection to the database and executes the SQL query. Then according to the result returned we return true or false. There is no code involved to show the name, just place the control on your web form and the user name will automatically appear. We are also using the LoginStatus control which is a hyperlink which either logs a user in or logs him out. The link text displayed depends on whether the user is logged in or not.

It is all automatic, and you do not need to add any code, unless obviously you want to customise some stuff. This page can only be accessed by authenticated users. NET will automatically redirect him to the home page. But, I hear you ask, how does ASP. Good question. For ASP. NET to correctly handle this logic, we must modify both our web. This means that all anonymous users are denied access to any files under the Members folder.

Therefore if you are unauthenticated and try to access files under the Members folder, you will be redirected. Our final task is to let ASP. NET know where to redirect users when they log in and when they are unauthenticated. What we are doing here is switching from Windows authentication to Forms authentication mode, and then we are identifying the url the user is redirected to when he logs in, and also the url the user is redirected to if he is not logged in and tries to access the member only area.

I have shown you the proper way to create a login page and authenticate your users. I hope you enjoyed this article and found it useful. Please feel free to leave your comments below. You can download the source code for this ASP. NET application at the end of the article but remember it requires Microsoft Visual Studio , although you can easily copy the code to an older version of Visual Studio.

Download Login Screen source — Hi Dave, I am glad I founf your article. I am new to progamming and found your article helpful but can you please add more detail on where do I need to add code after creating table.

Great Article! Thank you so much for the above code. However just running into an issue if you could help, part where its pass. HashString password. Trim ; says Hasher does not exist in the current context, can you please point me in the right direction. As stated in the article the Hasher is a custom built class which returns the hash of a string passed to it.

Hi Dave, I created the class as per your link, and compiled to dll. I added that dll as a reference in my project but it still gives the error that Paul has above? Great article and nice to find a tutorial that details the secure way of doing it!

I have a query though and must admit I am dabbling in asp. Any pointers or help would be much appreciated! NET Web Application and by default this comes with what you are after. As soon as you create a new ASP. NET Web Application, Visual Studio will create the framework for a basic website which also includes pages which handle the user maintenance part. It creates a database in the background on SQL Express I believe and allows you to add website users to it through the webpages which have been automatically created for you.

The user name and password in the database must be different from what you are using to log in with. That is the only way cmd. ExecuteScalar will return a zero without giving an exception. I was suggested this web site by my cousin. I am not sure whether this post is written by him as nobody else know such detailed about my trouble.

I was suggested this blog by my cousin. You are amazing! Member My project is called WebSite2 instead of Membership. Do you have any idea why I might be having this error? If I change it to CodeFile it will load, however, then it says Home. Hi, Thanks for the great information. The server side is secured now, but the logging in itself is not secured against sniffers e.

I was looking for possibilities that are safe for password sniffers, i. Since all client side encrypting has to be sent over the unsecured connection too, the hacker can always tap that information JavaScript or alike too. Does anyone knows a solution. Kind regards, Erik Stroeken. How would you re-direct a user who is trying to force the members page in the URL back to the Home page? I was not able to get this working.

I get this error on browser:. Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately.

My next article will discuss how to validate textbox, so stay tuned. View All. Krishna Rajput Singh Updated date Mar 20, Introduction This article demonstrates how to create a login page in an ASP.

Create database abcd --Login is my database name Use abcd --Select database or use database Create table Ulogin --create table Ulogin is my table name UserId varchar 50 primary key not null , --primary key not accept null value Password varchar not null insert into Ulogin values 'Krish' , 'kk ' --insert value in Ulogin table.

Figure 1. Text; con. ExecuteReader ; if sdr. Write ex. Next Recommended Reading. Net Core 6. Create A. Understanding Thread Starvation in. NET Core Applications. Exploring Numeric Streams In Java. ValidateUser "user", "pass" ; and while that does call ValidateUser on my custom MembershipProvider , and it does return true, it doesn't actually log me in. Allen Rice Allen Rice Add a comment. Active Oldest Votes.

ValidateUser Username. Text, Password. SetAuthCookie Username. Text, false ; FormsAuthentication. RedirectFromLoginPage Username. David David 70k 16 16 gold badges silver badges bronze badges. RedirectFromLoginPage is good because it redirects the user to the originally requested page and also logs the user in — Kyle B.

Matti Virkkunen Matti Virkkunen This is really what I needed — Allen Rice. Remember that the built-in forms authentication provider works quite fine with custom membership providers, and unless you need to do something very special, it should "just work".

Awesome, thanks. Though I do appreciate it just working, I like to understand how everything works and fits together so I can be aware of everything that is going on. Plus its easier to explain to management this way — Allen Rice. I can understand that. I find myself looking at the source of. NET using Reflector more and more often nowadays, just because I want to know how they do stuff.