Csharp/CSharp Tutorial/ADO.Net/OdbcConnection

OdbcConnection for Access mdb file

<source lang="csharp">using System; using Microsoft.Data.Odbc; class MainClass {

   static void Main(string[] args)
   {
       string connectionString  = @"Driver={Microsoft Access Driver (*.mdb)};DBQ=c:\Northwind.mdb";
       string SQL = "SELECT * FROM Orders";
       OdbcConnection  conn = new OdbcConnection(connectionString);
   
       OdbcCommand cmd = new OdbcCommand(SQL);
       cmd.Connection = conn;
       conn.Open();
       OdbcDataReader reader = cmd.ExecuteReader();
       while (reader.Read()) 
       {
           Console.Write("OrderID:"+reader.GetInt32(0).ToString() );
           Console.Write(" ,");
           Console.WriteLine("Customer:" + reader.GetString(1).ToString() );
       }
       reader.Close();
       conn.Close();
   }

}</source>

Use ODBC Data Provider

<source lang="csharp">using System; using System.Data; using System.Data.Odbc; class MainClass {

  static void Main(string[] args)
  {
     string connString = @"dsn=northwindodbc";
     string sql = @"select * from employee";
     OdbcConnection conn = null;
     OdbcDataReader reader = null;
     try
     {
        conn = new OdbcConnection(connString);
        conn.Open();
        OdbcCommand cmd = new OdbcCommand(sql, conn);
        reader = cmd.ExecuteReader();
        Console.WriteLine("Querying database {0} with query {1}\n", conn.Database, cmd.rumandText );
        while(reader.Read()) {
           Console.WriteLine("{0} | {1}", reader["FirstName"].ToString().PadLeft(10) , reader[1].ToString().PadLeft(10) );
        }
     }
     catch (Exception e)
     {
        Console.WriteLine("Error: " + e);
     }
     finally
     {
        reader.Close();
        conn.Close();
     }
  }

}</source>