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Figure 17-1. The Visual Studio 2005 resource editor Through Add Resource Add Existing File, you can add any external file stored in any format on the hard disk to the project. These files are automatically added to one of the resource directories of the ASP.NET website and compiled as embedded resources into the resulting binaries. Visual Studio and ASP.NET distinguish between global resources and local resources. Global resources are accessible from within any page of the application, and local resources exist on a per-page basis and are accessible from within their page only. Further, .resx files added to the App_GlobalResources folder are accessible from within all pages of the application. Figure 17-2 shows the current layout of the application running without using these embedded resources.

Figure 17-2. The sample application running without using the ResourceManager class As you can see in Figure 17-2, the captions for the Label controls are not initialized. You will now add the code necessary for initializing the text properties as well as generating the simple document. While going through this example, you will learn the different ways for accessing embedded resources. Furthermore, you will see that resources can be used for many different purposes, although localization is definitely the most common use. Basically, you can access embedded resources through a class generated by Visual Studio. This class is generated based on the information stored in the .resx file. That means when you create or modify resources with the resource editor (shown in Figure 17-1), Visual Studio embeds the resources in the application and automatically creates a strongly typed class behind the scenes for accessing these resources through properties (whereas the names of the properties are derived from the resource names you select in the resource editor). Therefore, every entry in the resource file results in a property of this generated class, whereas the class name is derived from the name of the resource file you have created. The following code snippet demonstrates how you can access resources from the previously added MyResourceStrings.resx file. The class name for the strongly typed resource class therefore is MyResourceStrings, and the class contains three properties for the resources specified earlier. protected void Page_Load(object sender, EventArgs e) { // These are simple string resources LegendFirstname.Text = Resources.MyResourceStrings.LegendFirstname; LegendLastname.Text = Resources.MyResourceStrings.LegendLastname; LegendAge.Text = Resources.MyResourceStrings.LegendAge; // This is the XML document added to the resources as file DocumentXml.DocumentContent = Resources.MyResourceStrings.MyDocument; }

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Note In general, we do not recommend that you directly access the Request or Response object provided by

</authentication> </system.web> </configuration> You can store a user s password in clear text format or as an MD5 or SHA1 hash. You can specify the password format in the passwordFormat attribute of the <credentials> section (Clear, MD5, or SHA1).

Later, in the Localization of Web Applications section, you will see how Visual Studio 2005 and ASP.NET 2.0 provide much better support for localizing captions and other properties of controls. In this part of the chapter, we just want to show you the low-level API for managing any type of resources, not just localization resources.

Internally, the generated class uses an instance of the ResourceManager class, which is defined in the System.Resources namespace. The instance of this class is accessible through the generated class s ResourceManager property. Internally, the property procedures for accessing the embedded

Authorization in ASPNET applications relies on the User property of the HttpContext associated with the request You ll remember from earlier in the chapter that each authentication module in ASPNET is responsible for populating the User property with an appropriate IPrincipal object containing the identity and role information for the user This allows ASPNET to run authorization-based account and group information from any location You define authorization settings in the <authorization> section of Webconfig by creating allow and deny entries for specific users, roles, or wildcards Listing 12-5 is an example <authorization> section showing you a number of different entries Listing 12-5 <authorization> Section Example <configuration> <systemweb> <authorization> <deny users=" "/> <deny users="Rob, Matt"/> <allow users="Kirk"/> <deny roles="NoReports"/> <allow roles="Manager, ReportViewer"/> <deny users="*"/> </authorization> </systemweb> </configuration> ASP.

the Page class (HttpContext), as this would interfere with normal page processing. If you need to write to the output stream, use the HtmlTextWriter class for this purpose.

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