Article ID: 815174 - View products that this article applies to.
This step-by-step article describes how to use ASP.NET to make application-specific and directory-specific configuration settings. The Web.config file resides in the root directory of an ASP.NET application. The Web.config file specifies configuration information that is specific to the application. You can also set configuration settings on a per-directory basis. There are two ways to do so:
To specify settings that apply to a Web application or directory, you can add the <location> element to the <configuration> element of a system Machine.config file. This is useful when you centralize configuration settings in a single file. This is also useful in Web-hosting environments to mandate specific configuration settings on individual Web applications.
The <location> element contains two attributes, path and allowOverride. The path attribute defines the site or virtual directory that the configuration settings cover. To specify that the settings in the <location> element apply to the default Web site, set the path attribute to Default Web Site. To specify that the settings apply to the application that is named MyApp in the default Web site, set the path attribute to "Default Web Site/MyApp".
When the allowOverride attribute is false, the Web.config files in the Web application directories cannot override the settings that you specified in the <location> element. This is a useful setting in environments where you must restrict application developers in how they configure a Web application. The following example shows a part of a Machine.config file that requires authentication to access the MyApp application on the default Web site and that cannot be overridden by settings in a Web.config file:
To specify settings that apply to a specific application or directory, add the <location> element to the <configuration> element of an application Web.config file. The <location> element typically contains a <system.web> element and other configuration elements exactly as you use them in the Web.config file. The path attribute of the <location> element specifies the virtual directory or the file name where the location configuration items apply. The following example shows part of an application Web.config file that specifies custom error messages for the forum virtual directory.
For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
818016For more information, visit the following Microsoft Developer Network Web sites:
(http://support.microsoft.com/kb/818016/ )How To Deploy Applications That Are Built on the .NET Framework
Format of ASP.NET Configuration Files