Try:
1. Set cache
Cache[ "username" ] = "username";
Cache[ "password" ] = "password";
2. Use cache
if( Cache[ "username" ] != null && Cache[ "password" ] != null )
{
String username = Cache[ "username" ].ToString();
String password= Cache[ "password" ].ToString();
}
else
{
}
3. Clear cache
Cache[ "username" ] = null;
Cache[ "password" ] = null;
Happy coding,
Morgs