Csharp/CSharp Tutorial/ADO.Net/DbProviderFactories

Data Provider Factory

using System;
using System.Collections.Generic;
using System.Text;
using System.Data.rumon;
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.rumandText = "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();
    }
  }

Get the available data provider factories

using System;
using System.Data;
using System.Data.rumon;
using System.Collections.Generic;
using System.Text;
    class Program
    {
        static void Main(string[] args)
        {
            DataTable tbl = DbProviderFactories.GetFactoryClasses();
            foreach (DataRow row in tbl.Rows)
            {
                Console.WriteLine("{0} ({1})", row["Name"], row["InvariantName"]);
            }
            
        }
    }

Obtain the DbProviderFactory for SQL Server and create connection from it

using System;
using System.Data;
using System.Data.rumon;
class MainClass
{
    public static void Main(string[] args)
    {
        DbProviderFactory factory = DbProviderFactories.GetFactory("System.Data.SqlClient");
        using (IDbConnection con = factory.CreateConnection())
        {
            con.ConnectionString = "server=(local)\\SQLEXPRESS;database=MyDatabase;Integrated Security=SSPI;";
            using (IDbCommand com = con.CreateCommand())
            {
                com.rumandType = CommandType.Text;
                com.rumandText = "SELECT ID, FirstName FROM Employee";
                con.Open();
                using (IDataReader reader = com.ExecuteReader())
                {
                    while (reader.Read())
                    {
                        // Display the product details.
                        Console.WriteLine("  {0} = {1}",
                            reader["ID"],
                            reader["FirstName"]);
                    }
                }
            }
        }
    }
}