ASP.NET Tutorial/ADO.net Database/Connection Strings
Add the connection string to a web configuration file higher in the folder hierarchy
The root Web.Config file is located at the following path:
C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\CONFIG
Encrypting Connection Strings with aspnet_regiis located in C:\WINDOWS\Microsoft.NET\Framework\v27\
aspnet_regiis -pef connectionStrings "c:\Websites\MyWebsite"
Storing Connection Strings in the Web Configuration File
<configuration>
<connectionStrings>
<add name="Products"
connectionString="Data Source=.\SQLEXPRESS;
AttachDbFilename=|DataDirectory|MyDatabase.mdf;Integrated Security=True;User Instance=True" />
</connectionStrings>
</configuration>
You can add as many connection strings to the connectionStrings section as you want.
<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>Show Products</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView
id="grdProducts"
DataSourceID="srcProducts"
Runat="server" />
<asp:SqlDataSource
id="srcProducts"
SelectCommand="SELECT * FROM Products"
ConnectionString="<%$ ConnectionStrings:Products %>"
Runat="server" />
</div>
</form>
</body>
</html>