NET and the. See the ASP. NET Core tutorials. Many articles in the ASP. NET Core documentation have links to samples written for them. This sample demonstrates the syntax and features for creating and consuming C iterators. This sample demonstrates the syntax and features for C indexers. Delegates and Events. This sample demonstrates the syntax and features for C delegates and events.
A second sample focused on events is also in the same repository. Expression Trees. This sample demonstrates many of the problems that can be solved by using Expression Trees. NET Core. Console Application. The Page directive defines page-specific attributes used by ASP.
NET page parser and compiler. Page directives specify how the page should be processed, and which assumptions need to be taken about the page. It allows importing namespaces, loading assemblies, and registering new controls with custom tag names and namespace prefixes.
The code section provides the handlers for the page and control events along with other functions required. We mentioned that, ASP. NET follows an object model. Now, these objects raise events when some events take place on the user interface, like a user clicks a button or moves the cursor. The kind of response these events need to reciprocate is coded in the event handler functions.
The event handlers are nothing but functions bound to the controls. NET framework. Visual Studio Web Form Designer, which allows the design of web applications in an intuitive, graphical method similar to Visual Basic 6. One such example is validation controls, which intuitively validate user input without the need for extensive client-side script.
In many respects, ASP. NET provides major improvements over ASP, and can definitely be considered a viable alternative for rapidly developing web-based applications. I has write this tutorial to share my Knowledge of ASP. NET with you. This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves.
If in doubt please contact the author via the discussion board below. Sign in Email. Forgot your password? Search within: Articles Quick Answers Messages. Tagged as. Stats K views. Beginners Introduction to ASP. Please Sign up or sign in to vote. An article giving basic introduction to ASP. NET over asp. Introduction I have seen many tutorials on ASP. The script-execution engine that Active Server Pages relies on interprets code line by line, every time the page is called. In addition, although variables are supported, they are all loosely typed as variants and bound to particular types only when the code is run.
Both these factors impede performance, and late binding of types makes it harder to catch errors when you are writing code. The interspersion of HTML with ASP code is particularly problematic for larger web applications, where content must be kept separate from business logic.
However, these tools never achieved the ease of use or the level of acceptance achieved by Microsoft Windows application development tools, such as Visual Basic or Microsoft Access. ASP developers still rely heavily or exclusively on Notepad.
Debugging is an unavoidable part of any software development process, and the debugging tools for ASP have been minimal. Most ASP programmers resort to embedding temporary Response. Write statements in their code to trace the progress of its execution. No real state management Session state is only maintained if the client browser supports cookies.
Session state information can only be held by using the ASP Session object. And you have to implement additional code if you, for example, want to identify a user. Update files only when server is down If your Web application makes use of components, copying new files to your application should only be done when the Web server is stopped.
Otherwise it is like pulling the rug from under your application's feet, because the components may be in use and locked and must be registered.
Because the metabase is stored in a proprietary format, it can only be modified on the server machine with utilities such as the Internet Service Manager. With limited support for programmatically manipulating or extracting these settings, it is often an arduous task to port an ASP application from one server to another. Introducing ASP. Advantages of ASP. NET you have the ability to completely separate layout and business logic.
This makes it much easier for teams of programmers and designers to collaborate efficiently. Support for compiled languages developer can use VB. NET and access features such as strong typing and object-oriented programming. Using compiled languages also means that ASP. NET pages do not suffer the performance penalties associated with interpreted code. Subsequent requests are directed to the fully compiled code, which is cached until the source changes.
Use services provided by the. NET Framework The. NET Framework provides class libraries that can be used by your application. We will go into more detail on some of them in this module. Graphical Development Environment Visual Studio. NET provides a very rich development environment for Web developers. You can drag and drop controls and set properties the way you do in Visual Basic 6.
State management To refer to the problems mentioned before, ASP. NET provides solutions for session and application state management. State information can, for example, be kept in memory or stored in a database. It can be shared across Web farms, and state information can be recovered, even if the server fails or the connection breaks down.
Update files while the server is running! Components of your application can be updated while the server is online and clients are connected. The Framework will use the new files as soon as they are copied to the application. Removed or old files that are still in use are kept in memory until the clients have finished. You can also easily copy these to another server, along with the other files that comprise your application.
Architecture is explained form bottom to top in the following discussion. NET, almost all data manipulation is done outside the context of an open database connection. One of the obvious themes of. NET is unification and interoperability between various programming languages. In order to achieve this; certain rules must be laid and all the languages must follow these rules. In other words we can not have languages running around creating their own extensions and their own fancy new data types.
CLS is the collection of the rules and constraints that every language that seeks to achieve. NET compatibility must follow. The CLR and the. NET Frameworks in general, however, are designed in such a way that code written in one language can not only seamlessly be used by another language. Hence ASP. NET can be programmed in any of the. NET compatible language whether it is VB. NET After this short excursion with some background information on the.
Net applications can also be written in a variety of. Net languages. These include C , VB. Net, and J. You just require basic knowledge of.
Net concepts. However, knowledge of programming language basics would be an additional help to learn this ASP. NET tutorials series. Net was first released in the year The first version of ASP. Net deployed was 1. The most recent version of ASP.
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