Implementing N-Tier Architecture in Web Application

N-Tier Architecture

N-Tier the word means Multiple Tier.

N-Tier Architecture is nothing but splitting your solution into different project based on the business requirement.

Advantage: 

1. Reduce the business and the programming complexity.
   
   
2. Easy to process 

Procedure :

To  work with n-Tier system

1. Create a solution.

2. Include a web application project in it and name it as "PRESENTATION LAYER"

3. Include a Class Library Project and name it as "DATALAYER"

4. Include a Class Library Project and name it  as "BUSINESSLAYER"

5. Now you have 3 project in single solution

6. Build the DataLayer.

7. Go to Business layer and right click on reference and in reference go to Project's. Here you can see the Datalayer. Click on that and include as reference.

8. Now in the Business Layer reference you can see the DataLayer assembly

9. Go to Presentationlayer and right click on reference and in reference go to Project's. Here you can see the BusinessLayer. Click on that and include as reference.

10. Now you can see the BusinessLayer Assembly in the Presentation Layer.

11. Now you can access all the methods

DataLayer in Business Layer

BusinessLayer in PresentationLayer

12. This is the way you build your N-Tier Application. For example, this is a 3 Tier System.