An ASP.NET MVC Sample that stores a user email and password to a repo without using an ORM, instead demonstrating standard ADO.NET.

Create a blank SQL Server database and run the following script against it:

SQLServer-Setup.sql

Configure your SQL Server database connection string in web.config:

<connectionStrings>
    <add name="DB"
         providerName="System.Data.SqlClient"
         connectionString="Data Source=.\SQLEXPRESS;Initial Catalog=YOURDATABASENAME;Integrated Security=True"/>
  </connectionStrings>

• An Email confirmation step could be added before storing an unconfirmed user - SendGrid or similar could be used to do this.
• Registration page could be throttled to avoid spamming.
• AJAX could be used to check if the email address already exists in the repository before submitting the form but I have purposely avoided any hand-crafted JavaScript in this example.
• Strings used in the UI should probably live in a resource to allow for easier internationalisation in the future.
• Analytics could be used to capture number of new registrations, failures, etc.
• The PBKDF2 PasswordHasher could be swapped for a non-copyrighted alternative - it was used in the interests of time constraints and not having to re-invent the wheel.
• Exception handling - custom error handling for a better UX.
• The SQL database table may benefit from an index that includes the Email column when the data grows to a substantial size.