Data Provider Factory : DbProviderFactories « ADO.Net « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. ADO.Net
3. DbProviderFactories

using System;
using System.Collections.Generic;
using System.Text;
using System.Data.Common;
using System.Configuration;
using System.Data;


  class Program
  {
    static void Main(string[] args)
    {
      string dp = "provider";
      string cnStr ="YourProvider";
      DbProviderFactory df = DbProviderFactories.GetFactory(dp);
      DbConnection cn = df.CreateConnection();
      Console.WriteLine(cn.GetType().FullName);
      cn.ConnectionString = cnStr;
      cn.Open();
      DbCommand cmd = df.CreateCommand();
      Console.WriteLine("Your command object is a: {0}", cmd.GetType().FullName);
      cmd.Connection = cn;
      cmd.CommandText = "Select * From Inventory";
      DbDataReader dr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
      Console.WriteLine(dr.GetType().FullName);
      while (dr.Read())
        Console.WriteLine("-> Car #{0} is a {1}.",dr["CarID"], dr["Make"].ToString().Trim());
      dr.Close();
    }
  }