Connection String in c#.net

[Atul Rane]

I am declareing my connection string in web.config file like that ;

<connectionStrings>
<add name ="SQLConnectionString" connectionString ="Persist Security
Info=False;User ID=sa;password=P@ssw0rd;Initial Catalog=Aperio;Data
Source=OPTRA-2003"/>
</connectionStrings >

Know i want to access this connection string in my Class.
How i can get this connection string in my Class.
I added reference System.Configuration but still i am unable to get
ConfigurationManager.ConnectionString[""].connectionstring.

 

[Peter Morris]

01: Add System.Configuration.dll to your references
02:
string cs =
System.Configuration.ConfigurationManager.ConnectionStrings["SQLConnectionString"];