連到SQL數據庫

                     string _sql;

                     SqlConnection cn;

                     _sql="server=localhost;uid=sa;pwd=hz0222;database=Northwind";

                     cn=new SqlConnection (_sql);

                     cn.Open ();

                     //SqlCommand cmd =new SqlCommand ("select * from Products ",cn);

                     //SqlDataReader rs;

                     //rs=cmd.ExecuteReader();

                     SqlDataAdapter da=new SqlDataAdapter ("select * from Products",cn);

 

                     DataSet ds=new DataSet ();

                     da.Fill (ds,"Products");

 

                     DataGrid1.DataSource =ds.Tables["Products"].DefaultView ;

                     //DataGrid1.CurrentPageIndex = 0;

                     DataGrid1.DataBind ();

                     cn.Close ();