Multi Data Access Layer Architecture

Summary : How to Use :

using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;

namespace WindowsApplication3
{
    abstract class DataAccessLayerBaseClass
    {
        public abstract void GetConnection();
    }

    // "ConcreteProductA"

    class SQLDataAccessLayer : WindowsApplication3.DataAccessLayerBaseClass
    {
        public override void GetConnection()
        {
            MessageBox.Show(this.GetType().ToString());
        }
    }

    // "ConcreteProductB"

    class AccessDataAccessLayer : WindowsApplication3.DataAccessLayerBaseClass
    {
        public override void GetConnection()
        {
            MessageBox.Show(this.GetType().ToString());
        }
    }

    public class Client
    {
        public static void Execute()
        {
            System.Type t = System.Type.GetType("WindowsApplication3.SQLDataAccessLayer");
            WindowsApplication3.DataAccessLayerBaseClass obj = Activator.CreateInstance(t) as WindowsApplication3.DataAccessLayerBaseClass;
            obj.GetConnection();

            t = System.Type.GetType("WindowsApplication3.AccessDataAccessLayer");
            obj = Activator.CreateInstance(t) as WindowsApplication3.DataAccessLayerBaseClass;
            obj.GetConnection();
        }
    }


}

 

Thanks & Regards,

Arun Manglick

SMTS || Microsoft Technology Practice || Bridgestone - Tyre Link || Persistent Systems || 3023-6258

 

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