Development Journey (6): Properties in the Web. config configuration file add,key,value meaning

This is the way to add a custom string, save is stored as a key-value, you can get value by key, this method is generally used to configure the global use of strings.

<configuration> is the root configuration section of the configuration file.

<appSettings> is a custom configuration section that contains custom application settings.

The add element is a custom application setting that adds a name/value pair to the application settings collection.

Code:

Web. config

1 < Configuration > 2 < appSettings > 3 <  key= "UserName" value= "Xiaomeng" >4</appsettings > 5 </ Configuration >

Background code:

1 void Page_Load (object  sender,eventargs e)2{3 String username=  configurationmanager.appsettings["UserName"]; 4 Response.Write (username); 5 }

Run: Xiaomeng