New Configuration Sections in ASP.net

ASP.NET configuration settings with XML configuration tags of your own. To do this, you must create your own configuration section handler. The handler must be a .NET Framework class that implements the IConfigurationSectionHandler interface. The section handler interprets and processes the settings defined in XML tags within a specific portion of a Web.config file and returns an appropriate configuration object based on the configuration settings. The configuration object that the handler class returns can be any data structure; it is not limited to any base configuration class or configuration format.

The following example defines an IConfigurationSectionHandler interface.

namespace System.Web.Configuration
{
public interface IConfigurationSectionHandler
{
public Object Create(Object parent, Object input,
XmlNode node);
}
}

You can also define your own section that uses the same configuration handler as the <appSettings> section. For example:

<configuration>
<configSections>
<sectionGroup name="myGroup">
<sectionGroup name="nestedGroup">
<section name="mySection" type=
"System.Configuration.NameValueSectionHandler,System"/>
</sectionGroup>
</sectionGroup>
</configSections>

<myGroup>
<nestedGroup>
<mySection>
<add key="key_one" value="1"/>
<add key="key_two" value="2"/>
</mySection>
</nestedGroup>
</myGroup>
</configuration>

You can read the value of the new configuration section defined in the preceding example as follows:
NameValueCollection config = (NameValueCollection)
ConfigurationSettings.GetConfig("myGroup/nestedGroup/mySection");
Response.Write("The value of key_one is " + Server.HtmlEncode(config["key_one"]) + "<br>");
Response.Write("The value of key_two is " + Server.HtmlEncode(config["key_two"]) + "<br>");