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It’s same process like adding Business Access Layer. Don’t forgot to rename Class file of Data Access Layer “Class1.cs” to “cs DL.cs“. See below image to design your windows form and generate the button click event to execute our logic.

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NET with Example using C# : Three tier architecture means dividing your project into three different layers that is Presentation Layer (User Interface Layer), Application Layer or Business Access Layer (Logic Code Layer) and Data Access Layer (Layer which connects to database). Presentation Layer is user interface where you can design your interface using html web controls or windows controls or mobile controls.

In previous articles we explained Watermark Text Box, Import Excel to SQL Server using Sql Bulk Copy, Add Twitter Widget, Tiled Menu Slider in Flash, Generate and Print Barcode, Auto Rotate Content, 3D Spin Menu, Play Sound in Flash, Simple XML Banner Rotator in flash, Load XML Data in Flash, URL Rewrite, Database operation in WPF with Access Database, Insert, Update, Delete Data into Database using Stored Procedure, Get Directions Google Map API and many more. It can be your website or windows application or mobile application.

Assembly is a logical unit consisting of the assembly manifest, type metadata, IL code, and a set of resources like image files. It provides access to data sources like SQL server, OLE DB, XML etc. NET allows connection to data sources for retrieving, manipulating, and updating data.

(10) Windows Presentation Foundation It provides a separation between the user interface and the business logic.

It helps in developing visually stunning interfaces using documents, media, two and three dimensional graphics, animations, and more.

When a beginner joins a company or if there is a final round of interviews, known as a machine round, then most of the time the team leader gives the Candidate the first assignment to create an application which allows the end user to upload only Excel files and display it in a grid view and download it.

Only HTTP cannot keep track of all the information coming from various pages. NET session state and server side infrastructure keeps track of the information collected globally over a session. NET runtime carries the page state to and from the server across page requests while generating ASP. NET page, the IIS delegates the processing of the page to the ASP. The code that is directly managed by the CLR is called the managed code.

NET runtime codes, and incorporates the state of the server side components in hidden fields. When the managed code is compiled, the compiler converts the source code into a CPU independent intermediate language (IL) code.

Step 1 Create presentation layer in other word create user interface of application.

Setp 2 Create Application Layer or Business Access Layer in this layer we develop the logical rules for validation. Forms; // Add namespace of Business Access Layer using BL; namespace Three Tier Architecture using System; using System.

This layer only communicates with Business Access Layer.

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