. Net2.0 use ConfigurationManager to read and write configuration files

. net1.1 a profile management class is typically encapsulated in a project to read and write if it is not convenient to have flexible operations and read and write configuration files. Using ConfigurationManager and WebConfigurationManager classes in. net2.0 can be a good management configuration file, The ConfigurationManager class is in System.Configuration, WebConfigurationManager in System.Web.Configuration. As explained by MSDN, for WEB application configuration, it is recommended that you use the System.Web.Configuration.WebConfigurationManager class instead of using the System.Configuration.ConfigurationManager class.

Let me give you a simple example of how to use the WebConfigurationManager operation configuration file:

Open configuration file
Configuration config = webconfigurationmanager.openwebconfiguration ("~");
Get appsettings node
Appsettingssection appsection = (appsettingssection) config. GetSection ("appSettings");
Adding elements to the appsettings node
APPSECTION.SETTINGS.ADD ("Addkey1", "Key1 ' s Value");
APPSECTION.SETTINGS.ADD ("Addkey2", "Key2 ' s Value");
Config. Save ();

You can see changes in the configuration file after you run the code:

<appSettings>
<add key= "Addkey1" value= "Key1 ' s value"/>
<add key= "Addkey2" value= "Key2 ' s value"/>
</appSettings>

It is also convenient to modify and delete nodes or properties:

Open configuration file
Configuration config = webconfigurationmanager.openwebconfiguration ("~");
Get appsettings node
Appsettingssection appsection = (appsettingssection) config. GetSection ("appSettings");
Delete elements from the appsettings node
AppSection.Settings.Remove ("Addkey1");
Modifying elements in the appsettings node
appsection.settings["Addkey2"]. Value = "Modify key2 ' s value";
Config. Save ();

Configuration file:

<appSettings>
<add key= "Addkey2" value= "Modify key2 ' s value"/>
</appSettings>