9: Security and Personalization in VS .NET

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9: Security and Personalization
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Personalization allows your users to dictate certain aspects of the site, which persist from one visit to the next. Personalization options can include your site s appearance, personal information, shopping carts, and other choices. A simple way to provide personalization is to define a profile for each user, and store their personalization choices there. To use profiles in your site, modify web.config, create a profile section, and set the enabled property to true. Then create a <properties> section within the profile section, and use the add attribute to add the names of any profile information you want to store. The default storage type for a profile property is string, but you can specify a different type with the Type attribute. The Profile.IsAnonymous property is a Boolean that lets you take action based on whether the user is logged in or not (using an anonymous profile). If you want your user to be able to use your site without logging in, you can enable anonymous personalization. Simply add a line to web.config setting <anonymousIdentification enabled = "true" />. When the user logs in, if you want to copy the user s profile from the anonymous profile to the user s permanent profile, you need to handle the MigrateAnonymous event, which is automatically raised when the user logs in. The code for your event handler should copy the properties from the anonymous profile to the logged-in profile. You can also allow users to customize the visual appearance of your site with themes. A theme is made up of skins, each of which provides the visual appearance of a single control. Themes are stored in a folder within your projects named App_Themes. Each subfolder within App_Themes is the name of a specific theme. Within the named theme folders, you store specific skin files, one for each control you want to modify. A skin file looks like a control declaration, but it has no ID property, just appearance properties. To enable users to set the theme of your site, simply add <add name="Theme" /> to the properties element in the profile section of web.config. To specify a theme on your page, just add a Theme attribute to the Page directive. To set the theme programmatically, you need to add an Overrides Property StyleSheetTheme( ) method to the class for the page, and set the accessors appropriately. To set a customization theme programmatically, you need to add a PreInit event handler, so that the theme is specified before the controls are created. To specify the theme for a specific control, use named skins, by setting a SkinID property in the skin file.
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You ve now tried out just about every section of the ASP.NET toolbox, and you ve seen controls ranging from the simple to the complex. You ve learned how controls work together, and how to create event handlers for them. You know how to create sites that use master pages, allow users to log in, provide navigation tools, access databases, and do it all while using Ajax to enhance the experience. What s left to do It s time to put it all together, of course. In the next chapter, you ll find a project that uses everything you ve learned so far to build a fully functional web site.
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9: Security and Personalization
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1. What are the two methods for creating users for your site 2. What is the difference between forms-based security and Windows authentication 3. Where is the user information stored in your site 4. What control do you need to add to enable users to create their own accounts 5. What tool do you use to add users to roles 6. What property do you use to restrict access to a page based on a role 7. What do you need to do to enable user profiles in your site 8. How do you retain profile information for a user without logging in 9. What s the difference between style sheet themes and customization themes 10. Where do you specify settings for a skin
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