In the config of Web. config

Add a setting in Web. config.

1. Construct a section between <configsections> </configsections>, as shown in figure

<Configsections>

<Section name = "mysection" type = "system. configuration. namevaluesectionhandler, system"/>

</Configsections>

You can also set a section group and the group can be nested.

<Configsections>

<Sectiongroup name = "mygroup">

<Sectiongroup name = "nestedgroup">

<Section name = "mysection" type = "system. configuration. namevaluesectionhandler, system"/>

</Sectiongroup>

</Sectiongroup>

</Configsections>

2. Add the sections settings between <configuration> </configuration> and the <configsections> </configsections> level.

<Mysection>

<Add key = "key_one" value = "1"/>

<Add key = "key_two" value = "2"/>

</Mysection>

Or use the section group method.

<Mygroup>

<Nestedgroup>

<Mysection>

<Add key = "key_one" value = "1"/>

<Add key = "key_two" value = "2"/>

</Mysection>

</Nestedgroup>

</Mygroup>

3. Read Value

Dim config as namevaluecollection = configurationsettings. getconfig ("mysection ")

Or

Dim config as namevaluecollection = configurationsettings. getconfig ("mygroup/nestedgroup/mysection ")

The above method is used when the configuration type to be added is complicated. For example, the above type is a class. Each of the preceding keys is an attribute in the class.

If the configuration to be added is only a text string, you can directly use the <deleetting> Configuration section

<Deleetask>

<Add key = "AAA" value = "BBB"/>

</Deleetting>

Directly use

Dim X as string = configurationsettings. deleettings ("AAA ")

You can.

 

<Location> </location> Configuration section usage

<Location> </location> is used to apply a set of configurations to a specific application directory.

For example,

<System. Web>

<Compilation defaultlanguage = "VB"/>

</System. Web>

<Location Path = "C # code">

<System. Web>

<Compilation defaultlanguage = "CS"/>

</System. Web>

</Location>

Only in the C # code directory, the default language is C #, and other directories are VB