web.config详解（web.config详解）.docVIP

web.config详解（web.config详解） First, understand the Web.config file Web.config file is an XML text file, its configuration information used to store the ASP.NET Web application (authentication application settings ASP.NET Web as the most common), it can appear in every directory of the application. When you create a Web through the.NET application, by default will automatically create a default Web.config file in the root directory, including the default configuration settings, all subdirectories inherit its configuration settings. If you want to modify the configuration settings of the subdirectory, you can create a new Web.config file in that subdirectory. It can provide configuration information other than the configuration information inherited from the parent directory, or you can override or modify settings defined in the parent directory. (1).Web.Config is stored as standard XML file, and configuration files are divided into the following formats 1. configuration section handler declaration Features: located at the top of the configuration file and included in the configSections flag. 2. application specific configuration Features: located in appSetting. You can define the applications global constant settings and so on 3. configuration section settings Features: located in the system.Web section, control the behavior of the A runtime 4. configure section groups Features: sectionGroup tags can be used to customize groupings, which can be placed inside the configSections or other sectionGroup Tags (two) each section of the configuration section 1.configuration Festival The root element, the other nodes, is in its interior 2.appSetting Festival This section is used to define application settings. For some uncertain settings, but also allows users to set their own according to their actual situation Usage: I. appSettings add key= Conntction value= server=6; userid=sa; password=; database=Info; appSettings A connection string constant is defined, and the connection