Rewrite the same asp.net application again

I have a asp.net application which is written in the traditional method [SqlConnection. SqlAdapter.. ..] in data access layer, I can see that every time we are making a connection and using adapters. Code is written in a very dirty manner. I have been given the task to re write the application in standard/best practice way. i have all stored procedure already开发者_如何学Python written, is there any way I can use a tool like which will help me in writing the business layer and data access layer?

I suggest you to go for codesmith. As you have all the Stored procedure already written you can either go for the LINQ to SQL feature.

For the DAL, you could use Entity Framework 4. The business logic could be wrapped up by hand.

Take a look at fluentAdo.net. You can use it with all your old stored procedures.

But if you really want to rewrite your app, I suggest you to use NHibernate or Entity Framework. They have pretty same set of fetures.