access数据库的用法

 string connStr ="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=行业代码对照表.mdb;User Id=admin;Password=;" ;    
   OleDbConnection conn = new OleDbConnection(connStr);
   conn.Open();    
   OleDbDataAdapter myAda;
   //   DataTable dt;
   
   string strsql = "select *  from 行业代码对照表";
   myAda = new OleDbDataAdapter(strsql,conn);
   //    dt = new DataTable();
   myAda.Fill(dt);
   
   myAda.Dispose();