大伙救急!!!!
帮忙写一段连接数据库的代码.代码是放在OK按钮的代码里的,要点击OK按钮后打开数据库连接.版主好心救命!

private void ok_click()
{
SqlConnection conn=new SqlConnection("server=localhost; database=pubs; uid=sa; pwd=");
conn.open();
SqlCommand com=new SqlCommand("select * from pubs" , conn);
SqlDataReader dr=com.executereader();
}

要用ADO技术实现连接

干脆帮你写程序得了~，呵呵！

oledbconnection conn =new oledbconnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source ")
conn.open();
oledbcommand dc=new oledbcommand("select * from table ",conn);