using System; using System.Data; using System.Data.SqlClient; using System.Data.OleDb; class MainClass { public static void Main() { using (OleDbConnection con = new OleDbConnection()) { con.ConnectionString = "Provider=SQLOLEDB;" + @"Data Source=.sqlexpress;" + "Initial Catalog=Northwind;" + "Integrated Security=SSPI"; con.Open(); if (con.State == ConnectionState.Open) { Console.WriteLine(" Server Version = " + con.ServerVersion); } else { Console.WriteLine("OleDbConnection failed to open."); Console.WriteLine(" Connection State = " + con.State); } } } }
Database ADO.net
OleDbConnection: Database
using System; using System.Data; using System.Data.SqlClient; using System.Data.OleDb; class MainClass { public static void Main() { using (OleDbConnection con = new OleDbConnection()) { con.ConnectionString = "Provider=SQLOLEDB;" + @"Data Source=.sqlexpress;" + "Initial Catalog=Northwind;" + "Integrated Security=SSPI"; con.Open(); if (con.State == ConnectionState.Open) { Console.WriteLine(" Database = " + con.Database); } else { Console.WriteLine("OleDbConnection failed to open."); Console.WriteLine(" Connection State = " + con.State); } } } }
OleDbConnection: DataSource
using System; using System.Data; using System.Data.SqlClient; using System.Data.OleDb; class MainClass { public static void Main() { using (OleDbConnection con = new OleDbConnection()) { con.ConnectionString = "Provider=SQLOLEDB;" + @"Data Source=.sqlexpress;" + "Initial Catalog=Northwind;" + "Integrated Security=SSPI"; con.Open(); if (con.State == ConnectionState.Open) { Console.WriteLine(" Database Source = " + con.DataSource); } else { Console.WriteLine("OleDbConnection failed to open."); Console.WriteLine(" Connection State = " + con.State); } } } }
OleDbConnection: ConnectionString property
using System; using System.Data; using System.Data.SqlClient; using System.Data.OleDb; class MainClass { public static void Main() { using (OleDbConnection con = new OleDbConnection()) { con.ConnectionString = "Provider=SQLOLEDB;" + @"Data Source=.sqlexpress;" + "Initial Catalog=Northwind;" + "Integrated Security=SSPI"; con.Open(); if (con.State == ConnectionState.Open) { Console.WriteLine(" Connection String = " + con.ConnectionString); } else { Console.WriteLine("OleDbConnection failed to open."); Console.WriteLine(" Connection State = " + con.State); } } } }
OleDbConnection: State
using System; using System.Data; using System.Data.SqlClient; using System.Data.OleDb; class MainClass { public static void Main() { using (OleDbConnection con = new OleDbConnection()) { con.ConnectionString = "Provider=SQLOLEDB;" + @"Data Source=.sqlexpress;" + "Initial Catalog=Northwind;" + "Integrated Security=SSPI"; con.Open(); if (con.State == ConnectionState.Open) { Console.WriteLine(" Connection State = " + con.State); } else { Console.WriteLine("OleDbConnection failed to open."); Console.WriteLine(" Connection State = " + con.State); } } } }
OleDbConnection string
using System; using System.Diagnostics; using System.Drawing; using System.Collections; using System.ComponentModel; using System.Windows.Forms; using System.Data; using System.Data.SqlClient; using System.Data.OleDb; public class MainClass { static void Main() { try { OleDbConnection cnOleDb = new OleDbConnection("Provider=SQLOLEDB.1;Password=pw;Persist Security Info=False;User ID=admin;Initial Catalog=biblio;Data Source=betav9;Use Procedure for Prepare=1;Auto Translate=True;Packet Size=4096;Workstation ID=BETAV9;Use Encryption for Data=False;Tag with column collation when possible=False"); cnOleDb.Open(); } catch (OleDbException exOleDb) { MessageBox.Show(exOleDb.Message); } catch (Exception ex) { MessageBox.Show(ex.Message); } } }
Read data from ole db connection
using System; using System.Data.OleDb; public class ReadFromOleDb { [STAThread] static void Main(string[] args) { String sConn = "provider=sqloledb;server=(local)SQLEXPRESS;database=MyDatabase;Integrated Security=SSPI"; String sSQL = "select id, firstname, lastname from Employee"; OleDbConnection oConn = new OleDbConnection(sConn); oConn.Open(); OleDbCommand oCmd = new OleDbCommand(sSQL, oConn); OleDbDataReader oReader = oCmd.ExecuteReader(); int idxID = oReader.GetOrdinal("id"); int idxFirstName = oReader.GetOrdinal("firstname"); int idxLastName = oReader.GetOrdinal("lastname"); while(oReader.Read()) { Console.WriteLine("{0} {1} {2}", oReader.GetValue(idxID), oReader.GetValue(idxFirstName), oReader.GetValue(idxLastName)); } } }