Testing Mysql Connection

When will you guys code in a way for developers to test if the MySQL connection is successfully opened?

The codes below do not work.

Code:

if(connection == null)
    Puts("Unable to connect to sql server!");

Code:

if(connection.Con.State == ConnectionState.Closed)
    Puts("Unable to connect to sql server!");

Code:

try
{
    connection = mysql.OpenDb("hostname", 3306, "database", "username", "password", this);
}
catch (Exception ex)
{
     Puts("Unable to connect to MySQL server!");
}

Edit: I solved my issue.