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Download source code for 3-Tier Architecture in ASP. Seperation - the functionality is seperated from the data access and presentation so that it is more maintainable 2.NET with C# 3-Tier architecture generally contains UI or Presentation Layer, Business Access Layer (BAL) or Business Logic Layer and Data Access Layer (DAL). Independence - layers are established so that if one is modified (to some extent) it will not affect other layers. Reusability - As the layers are seperated, it can exist as a module that can be reused by other application by referencing it.Because I am trying to implement this but not getting it.The folder structure what i am looking for the 3 layers should be like this; --PRESENTATION LAYER --- (this is the startup project) --APP_CODE --APP_DATA --Web.config --DAL --cls Employees --cls Transport --BAL --cls Load --cls Get Employees this is what i need to implement. thanks & regards nazir k Nazirk, You need to use Visual Studio to create BAL and DAL as separate projects. Insert) by passing first Name, last Name, age as parameter. Then I have instantiated Person BAL3 and calling Insert method of it (p BAL. Now, create a class named Person BAL3 into App_Code folder by right clicking it and write respective methods for calling Insert, Delete, Update and Load methods of Data Access Layer class file (Person DAL3) (In my case I have a 3-Tier folder inside App_Code folder, you can directly add inside App_Code or you can create a separate project for BAL and add reference of this project into your Presentation Layer). In the above method, I am instantiating Person BAL3 and calling the Update method by p[assing required parameters. I am not goint into details of how I am connecting database and manipulating the data just to make this tutorials short. Code to Update records Above method will fire when Update link will be clicked for a particular row of the Grid View in edit mode.

In this article I am going to show how to design a web application based on 3-tier architecture. Code for Business Access Layer using System; using System. By using 3-Tier architecture in your project you can achive 1.

So just pass the value in correct Date Time format. Just curious why you did not use the gridview wizard to display the list of records. This approach is good if you have a small project but for bigger projects it is not suggestable.

So for example, configure a sqldatasource and then bind it to the grid view control. For further you can refer to this page One more question....

For the ease of understanding, I have created BAL, DAL into the App_Code folder. pre 2) Can you post other similar article with Ajax? Because in practice we expect the delete to be performed with confirmation and also in details screen. Add new / Edit in 2 different tab panels - to have better usability. Regards, Sreedhar Thanks Vansree for your suggestions. Regarding pre class, I will let the webmaster know about it. As far as article on Ajax is concerned, I will try my best to post few articles on Ajax in coming days. Regards This is simpler example for 3-Tier Architecture.

In real scenario, you should create separate projects for BAL, DAL (as Class Library) and UI (as Web project) and reference your BAL into UI. I wonder if you can come up with the same but using Ajax Tabs. Like having add button in Grid View will switch you to Tab Panel (Add new) and then perform the add ... But would like to see if you can come up with Tabs and your example above. I have one question about passing the data between layers.

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Data Access Layer Lets proceed with desiging 3-Tier architecture. Add a class named by right clicking App_Code folder. Because the new buzz in the industry is to use Ajax Tab Panels. As you have used four variables to pass data from one layer to another (person ID, first Name, last Name, age).

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