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Now that you know about the <appSettings> and <connectionStrings> sections, it is time to discuss some guidelines for determining whether or not a setting should be stored in one of these locations. The guidelines for connection strings are relatively concrete. Do not hard-code any connection strings in your application. There is no compelling reason to do so, especially considering the tools available to help you avoid it. All connection strings should be placed in the <connectionStrings> section of the Web.config file. Do not place any part of your connection string in the <appSettings> section. Use meaningful, friendly names for your connection strings. The Visual Studio 2005 IDE actually uses these names to help you select connection strings from a drop-down list in some tools, so using meaningful names can only help you out. Application settings can encompass just about anything in your web application that you may need to change. Here are some general guidelines for locating them in your application: If it can change, then it s a candidate for being an application setting. It s a painful experience to recompile your application just to change a mundane setting. If it can change, but you are 100% sure that it won t change, then it s still a candidate for becoming an application setting. You may think that your database server is never going to move or that the R: drive you mapped will always be around, but time has the power to change such absolutes.

Listing 5-7. CustomerOrder.java package com.apress.business; public class CustomerOrder { /** Holds value of property productName. */ private String productName; /** Holds value of property productCode. */ private int productCode; /** Holds value of property productPrice. */ private int productPrice; /** Creates a new instance of CustomerOrder */ public CustomerOrder() { } public CustomerOrder(String name, int code, int price) { this.productCode = code; this.productPrice = price; this.productName = name; }

You can configure a role provider for your application in the <providers> element of the <roleManager> section in Web.config. You can also configure role providers in Machine.config if you want to centralize configuration for multiple applications. Listing 5-12 is a sample role provider configuration. Listing 5-12. Role Provider Configuration <configuration> ... <system.web> ... <roleManager enabled="true" defaultProvider="MySqlRoleProvider"> <providers> <add name="MySqlRoleProvider" connectionStringName="LocalSqlServer" applicationName="/" type="System.Web.Security.SqlRoleProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" /> </providers> </roleManager> </system.web> </configuration> The most important thing to know about the role provider for your application is that you must explicitly enable it by setting the enabled attribute of the <roleManager> element to True. Otherwise your application won t have access to any role-management functionality. You also need to specify the default provider via the defaultProvider attribute in the <roleManager> element. Unlike membership providers, role providers do not expose nearly as many configurable options, so you will probably not find yourself creating role providers nearly as often.

Figure 1-2. Sourcery G++ Lite installer Now you should have the toolchain ready for use. Perform a quick test by typing the following: user@ubuntu:~$ arm-none-linux-gnueabi-gcc --version arm-none-linux-gnueabi-gcc (Sourcery G++ Lite 2008q3-72) 4.3.2 Copyright (C) 2008 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

ASP.NET 2.0 comes with two preconfigured role providers defined in Machine.config. The first is the AspNetSqlRoleProvider, which provides the role object the capability to store role information in a SQL Server database. The second is the AspNetWindowsTokenRoleProvider, which is used for applications running Windows Authentication. The AspNetSqlRoleProvider uses the LocalSqlServer connection string so it uses the ASPNETDB.mdf database in App_Data folder of the current application as its data source. If you don t specify a default role provider, then your application will default to the AspNetSqlRoleProvider. Your website needs to have a properly configured membership provider if you plan to administer users and roles via the Web Site Administration Tool and the Membership or Roles objects, or use many of the advanced features on the new ASP.NET 2.0 login controls. The sample code for this chapter (in the Source Code area of the Apress website) uses the SQL Server membership provider to store all the user and role information, so you can learn all about membership provider configuration by setting it up. Create a new website (or open the 5 sample website) and click on Website ASP.NET Configuration to launch the Web Site Administration Tool.