Read the Web. config database link in Asp.net in a class project

Class1.cs

Using System;
Using System. Collections. Generic;
Using System. LINQ;
Using System. text;

Namespace Classlibrary1
{
Public   Class Class1
{
Public   String Testconsql ()
{
String Consql = System. configuration. configurationsettings. deleettings [ " Mysystem " ]. Tostring ();
Return Consql;
}
}

}

 
Asp.net web. config

< Appsettings >
< Add key = " Mysystem " Value = " Server = localhost, uid = SA, Pwd = 123, database = mysystemdatabase "   />
</ Appsettings >

Default. aspx. CS

Using System;
Using System. Collections. Generic;
Using System. LINQ;
Using System. Web;
Using System. Web. UI;
Using System. Web. UI. webcontrols;

UsingClasslibrary1;

Namespace Webapplication1
{
Public   Partial   Class _ Default: system. Web. UI. Page
{
Protected   Void Page_load ( Object Sender, eventargs E)
{
Class1 AA =   New Class1 ();
Response. Write (AA. testconsql ());
}
}
}