This document explains the use of forms authentication in ASP.NET applications, including web forms and MVC, and its application in Web API. It details how user authentication is managed by the underlying web application, rather than by the Web API itself, and discusses the configuration of SQL Server membership features for ASP.NET. Additionally, it outlines the setup of the authentication section in the application to facilitate login and default URL settings.

1. Forms Authentication in ASP.NET
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2. ASP.NET developers commonly use forms authentication to fix their web
pages. Like ASP.NET web forms and ASP.NET MVC applications, Web
API also can take advantage of forms authentication to execute
authentication and security in asp.net.
In this post, we would explain how forms authentication is used in Web
API being consumed in an MVC application.
The overall process of executing forms authentication remains the same
in case of Web API too. However, there are a few points that you need to
keep in mind.
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3. Web API doesn’t log-in or log-out a user by itself. This matter is taken
care by the underlying web application – whether it is web forms
application or MVC application.
Generally, a user logs into the application using some web form or a
view created to serve the purpose and then proceeds to call a Web API.
The Web API action methods can find the authentication status of a
user, his membership information and also his role information.
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4. Configure SQL Server
Membership features of ASP.NET require certain database tables and
stored procedures. To configure SQL server database for enabling
application services (membership, roles, profiles) you use
aspnet_regsql.exe command line tool. You can also let ASP.NET
configure and create a new LocalDb database for you if you don’t want to
use an existing database.
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5. The <authentication> section sets the mode of authentication and in this
case, it is set to Forms. The <forms> tag configures the loginUrl and
defaultUrl attributes to ~/home/login and ~/home/index respectively. The
loginUrl feature indicates URL of the login page whereas defaultUrl
feature indicates URL of the default page.
If you haven’t configured a database to reserve membership information
and don’t want to use an existing database, select PROJECT > ASP.NET
Configuration to unlock Website Administration Tool.
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6. If you are considering to take ASP.Net training then our CRB Tech
ASP.Net Training center could be very helpful in fulfilling your
aspirations.
Stay connected to our page of CRB Tech reviews for more technical
optimization and other resources.
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7. Thank You.....
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