The web.config file is a text file which contains XML elements that affect the behavior of an application. The following are some of the mportant tags in a web.config file.
In a Web.config file, all the configuration information for an ASP.NET application must reside between the andtags. This is the root node, which contains the declaration of all other sections of the Web.config file. This section of the Web.config file provides a way to define custom application settings for an application. The section can have multiple subelements. This element sets several compilation settings for the application. Some of the settings involve setting a default language and debug option for the application setting. Debug pages are larger and execute more slowly, so you should use them only for testing purposes. This section also provides support for the , , and subelements. This subelement is used to add or remove namespace references for assemblies that must be made available when compiling Web pages. The element sets the authentication policy for the application. Possible modes are "Windows," "Forms," "Passport," and "None." The element allows configuration of page application specific settings. The element provides a means for defining custom error messages for an ASP.NET application. This is generally used to point users to a friendlier message than the default error messages. The element section supports multiple subelements that are used to define custom errors.
ASP.NET Configurations - Related Contents