C# connect to database and list the databases

Possible Duplicate:
SQL Server query to find all current database names

I am trying to figure out how to list the databases after connecting to the servers without specifying a database first.

sqlConnection1 = new SqlConnection("Server=" + sqlServer + ";Database=" + database +    
";User ID=" + userName + ";Password=" + password + ";Trusted_Connection=False;");

So basically what i want is the end user to connect to the sql server, then have a drop down list populated with the list of db's they can connect and query.

Ideas?