private DB checkDatabase()
{
string server = txt_server.Text.Trim();
string port = txt_port.Text.Trim();
string userid = txt_userid.Text.Trim();
string pwd = txt_pwd.Text.Trim();
string dbname = txt_dbname.Text.Trim();
DB db = new DB(server, port, userid, pwd, dbname);
string msg = db.test();
if (null == msg)
{
return db;
}
else
{
MessageBox.Show("���ݿ�����ʧ�ܣ�" + msg);
return null;
}
}
public Form2(DB db)
{
InitializeComponent();
this.db = db;
}