DotNetRecipe

ADO.Net provides a bridge between the front end controls and the back end database. The ADO.Net objects encapsulate all the data access operations and the controls interact with these objects to display data, thus hiding the details of movement of data. The following figure shows the ADO.Net objects at a glance:

Components of .Net Framework 3.5 Before going to the next session on Visual Studio.Net, let us look at the various components of the .Net framework 3.5. The following table describes the components of the .Net framework 3.5 and the job they perform: Components and their Description (1) Common Language Runtime or CLR It performs memory management, exception handling, debugging, security checking, thread execution, code execution, code safety, verification and compilation.Those codes which are directly managed by the CLR are called the managed code. When the managed code is compiled, the compiler converts the source code into a CPU independent intermediate language (IL) code. A Just in time compiler (JIT) compiles the IL code into native code, which is CPU specific. (2) .Net Framework Class Library It contains a huge library of reusable types . classes, interfaces, structures and enumerated values, which are collectively called types. ...

ASP.Net Component Model: The ASP.Net component model provides various building blocks of ASP.Net pages. Basically it is an object model, which describes: ·          Server side counterparts of almost all HTML elements or tags, like <form> and <input>. ·          Server controls, which help in developing complex user-interface for example the Calendar control or the Gridview control. ASP.Net is a technology, which works on the .Net framework that contains all web-related functionalities. The .Net framework is made of an object-oriented hierarchy. An ASP.Net web application is made of pages. When a user requests an ASP.Net page, the IIS delegates the processing of the page to the ASP.Net runtime system. The ASP.Net runtime transforms the .aspx page into an instance of a class, which inherits from the base class Page of the .Net framework. Therefore, each ASP.Net page is an object and a...

ASP.Net Web Forms Model: ASP.Net web forms extend the event-driven model of interaction to the web applications. The browser submits a web form to the web server and the server returns a full markup page or HTML page in response. All client side user activities are forwarded to the server for stateful processing. The server processes the output of the client actions and triggers the reactions. Now, HTTP is a stateless protocol. ASP.Net framework helps in storing the information regarding the state of the application, which consists of: ·          Page state ·          Session state The page state is the state of the client, i.e., the content of various input fields in the web form. The session state is the collective obtained from various pages the user visited and worked with, i.e., the overall session state. To clear the concept, let us take up an example of a shopping cart as follows. User ...