public class myDb
  Private ConnectionString as String
 
  public Sub New()
   ConnectionString = ( _
     System.Configuration.ConfigurationManager.ConnectionStrings( _
     "MyConnString").ToString()
  End Sub

 
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
  </configSections>
 
  <connectionStrings>
    <add name="MyConnString"
         value="PROVIDER=Microsoft.Jet.OLEDB.4.0;Data" & _
           "Source=F:\Transmitter.mdb" />
  </connectionStrings>
  <appSettings>
    <add key="TestKey" value="TestValue" />
  </appSettings>
</configuration>