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how we can use 3 tier in our project

You should have done google first.
You can check Asp.Net 3 Tire Architecture[^]
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Dalek Dave 22-Oct-10 3:36am    
You Tell Him!
you will have your project folder added to that you create one project as model where you will have all the business logic and send the data parameters to this model.

now create the DAL folder it will have the connection part to your database and add the enterprise library to this ie application blocks.

finally you will build the model part and the dal part projects you will get the dll's. now add teh dll's to the actual project as references.

and you can pass the project data ie entry data to teh model and the model will check the business logic and if it is valid it will send the parameters to the dal folder and the data will be transacted to the DB.

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