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Creating a page to log in users

From: ASP.NET Essential Training

Video: Creating a page to log in users

ASP.NET 3.5 includes a set of components known as the authentication or security components. These components can be dropped into ASP.NET pages to configure a website that you want to be authenticated. That is, that you want a user to have to login to, to have access to either the entire website or to various components of the website. For the demonstrations in this chapter, I'll use the security website. I'll build the login form using an existing file called Login.aspx. After I open the file, I'll then click the Design button to look at the page in Design mode.

Creating a page to log in users

ASP.NET 3.5 includes a set of components known as the authentication or security components. These components can be dropped into ASP.NET pages to configure a website that you want to be authenticated. That is, that you want a user to have to login to, to have access to either the entire website or to various components of the website. For the demonstrations in this chapter, I'll use the security website. I'll build the login form using an existing file called Login.aspx. After I open the file, I'll then click the Design button to look at the page in Design mode.

You will see that this is a very simple ASP.NET page. It does not include the standard header control that I have used in other parts of the website. When the login form is presented, you typically don't want to present the Application menu, for example. So here, I'm only presenting the actual banner graphic at the top of the page. And otherwise, this is a completely blank page. The first step to implementing a security system is to create a login form. That's what I'll do with this page. With the file open, go to the Toolbox panel and pin it into place if it's not already setup that way. Then open the Toolbox panel's Login category. You will see a number of components listed there including the Login, the LoginView, the CreateUserWizard and others.

The first step is to create an object called Login Status. The Login Status object detects whether a user is currently logged in. Drag the Login Status object and place it inside the empty paragraph. You will see that the Login Status object has two views, the Logged Out view which is displayed when the user is logged out and the Logged In view that's displayed when the user is logged in. For the Login page, we are primarily concerned with the Logged Out view, what the user sees when they are logged out.

Set the Views option to Logged Out, the original setting. Then go back to the Login category and locate the Login component and drag and drop that and place it directly on top of the Login Status object. You will see that it drops in above the Login Status. And it creates a data entry form that asks the users for their username and their password. You can select the Auto Format option and choose one of the standard looking fields. I'll choose the Simple look which matches the formatting that I have applied to other components in the website, and I'll click OK. Now press Ctrl+S to save and then run the page selecting Debug > Start Without Debugging. The login form asks for the username and password. I haven't actually created user names and passwords yet, but I can go ahead and type in values. I'll type in my name, David and then a password and click Log In. There's a good bit of activity going on the first time I use the page. I'll explain what's going on in a moment.

But when the Login page is finished processing, I see the message 'Your login attempt was not successful.' Please try again. So that's the beginning of creating the login architecture. Now here's what was going on in the background. The first time you run the Login page, the .NET Framework automatically creates a database. I'll go to the App_Data folder, which is automatically created in all ASP.NET websites that are created in Visual Web Developer. And I'll click the Refresh button at the top of the Solution Explorer panel, and you will see a new file has been created called ASPNETDB.MDF. That's an SQL Server database, which is actually being stored locally with the website. Then I'll go to the Database Explorer panel and show that a data connection has been created that connects to that database.

I will open the database file and open it's tables list and you will see that the database structure has been populated automatically with the number of tables. They are all prefixed with aspnet and then there's an underscore character and then there's the name of the table. I will describe the purpose of many of these tables in a later video. But you've successfully created your login page and you've also successfully created a database to store user names, passwords and other aspects of the authentication system.

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This video is part of

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ASP.NET Essential Training

79 video lessons · 49260 viewers

David Gassner
Author

 
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  1. 18m 44s
    1. Welcome
      1m 42s
    2. Prerequisites
      2m 21s
    3. Using the exercise files
      1m 32s
    4. Upgrading exercise file websites for ASP.NET 4.5 (NEW)
      2m 40s
    5. What's new in ASP.NET 4 (NEW)
      3m 48s
    6. What's new in ASP.NET 4.5 (NEW)
      3m 23s
    7. What's new in this course update (NEW)
      3m 18s
  2. 33m 34s
    1. Understanding how ASP.NET works
      5m 52s
    2. Installing Microsoft Visual Web Developer 2008
      3m 43s
    3. Installing Visual Studio Express 2012 for web (NEW)
      2m 12s
    4. Hello World: Creating your first ASP.NET web site
      4m 28s
    5. Creating pages with dynamic output
      7m 39s
    6. Understanding the development web server
      4m 49s
    7. Exploring the development environment
      4m 51s
  3. 40m 2s
    1. Understanding Microsoft SQL Server
      5m 47s
    2. Installing SQL Server Express
      6m 51s
    3. Exploring SQL Server Management Studio Basic
      4m 23s
    4. Creating a new database
      8m 51s
    5. Connecting to the database in ASP.NET
      5m 35s
    6. Testing SQL queries
      3m 53s
    7. Presenting a dataset in an ASP.NET page
      4m 42s
  4. 25m 31s
    1. Understanding ASP.NET web form pages
      5m 51s
    2. Separating presentation and logic with code files
      4m 17s
    3. Adding web form controls to a page
      5m 25s
    4. Handling postback data in a web form page
      5m 50s
    5. Using data binding expressions
      4m 8s
  5. 48m 37s
    1. Creating a testing environment
      4m 40s
    2. Declaring and using a simple variable
      6m 14s
    3. Declaring and using a complex object
      6m 16s
    4. Using loops
      6m 52s
    5. Using functions
      9m 25s
    6. Using trace statements
      4m 47s
    7. Debugging with breakpoints
      5m 45s
    8. Commenting code
      4m 38s
  6. 17m 43s
    1. Creating web controls
      5m 53s
    2. Registering a user control on a web form page
      3m 25s
    3. Registering controls globally in the web.config file
      3m 53s
    4. Adding public properties to a web control
      4m 32s
  7. 19m 7s
    1. Understanding Cascading Style Sheets (CSS)
      5m 36s
    2. Attaching external CSS files
      3m 12s
    3. Defining a CSS selector
      6m 10s
    4. Using CSS class selectors in server controls
      4m 9s
  8. 30m 34s
    1. Presenting data with the GridView control
      5m 49s
    2. Controlling GridView paging and appearance
      5m 46s
    3. Editing data with the GridView control
      6m 57s
    4. Presenting data with the DataList control
      5m 42s
    5. Formatting data with binding expressions
      6m 20s
  9. 36m 46s
    1. Using the DetailsView control
      7m 33s
    2. Inserting data with the DetailsView control
      6m 36s
    3. Redirecting page requests
      9m 39s
    4. Creating an update page
      6m 20s
    5. Linking to update pages from the list page
      4m 3s
    6. Deleting database records
      2m 35s
  10. 22m 15s
    1. Customizing forms with item editing templates
      6m 7s
    2. Adding validator controls to a form
      6m 40s
    3. Controlling the validation error message display
      6m 24s
    4. Using the ValidationSummary control
      3m 4s
  11. 29m 49s
    1. Creating a query with joined tables
      8m 6s
    2. Replacing control style properties with CSS
      5m 50s
    3. Creating a CSS file for printing
      3m 14s
    4. Suppressing elements in printed web pages
      5m 47s
    5. Selecting data for a report
      6m 52s
  12. 11m 14s
    1. Understanding ViewState and managing postbacks
      4m 36s
    2. Using session variables
      6m 38s
  13. 20m 57s
    1. Turning on forms authentication
      1m 51s
    2. Creating a page to log in users
      4m 18s
    3. Creating a page to set up new users
      4m 6s
    4. Understanding the security database
      3m 27s
    5. Configuring security in the web.config file
      2m 59s
    6. Creating a page to log out users
      4m 16s
  14. 27m 56s
    1. Installing IIS on Windows XP
      6m 32s
    2. Installing ASP.NET 3.5 on Windows XP
      1m 39s
    3. Deploying a site on Windows XP
      5m 9s
    4. Installing Information Internet Services (IIS) on Windows Vista, Windows 7, and Windows 8
      1m 56s
    5. Configuring ASP.NET 3.5 on Windows Vista
      2m 15s
    6. Deploying an application on Windows Vista
      3m 29s
    7. Scripting a database for deployment
      3m 36s
    8. Exporting database scripts in SQL Server Management Studio 2012 (NEW)
      3m 20s
  15. 2m 0s
    1. Where to go from here
      2m 0s

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