Asp.net Fundamentals

Asp.net Fundamentals Tutorial

7150.00/

ASP.NET is an open-source server-side web application framework designed for web development to produce dynamic web pages. It was developed by Microsoft to allow programmers to build dynamic web sites, web applications and web services. It was first released in January 2002 with version 1.0 of the .NET Framework, and is the successor to Microsoft's Active Server Pages (ASP) technology. ASP.NET is built on the Common Language Runtime (CLR), allowing programmers to write ASP.NET code using any supported .NET language. The ASP.NET SOAP extension framework allows ASP.NET components to process SOAP messages.

It was first released in January 2002 with version 1.0 of the .NET Framework, and is the successor to Microsoft's Active Server Pages (ASP) technology. ASP.NET is built on the Common Language Runtime (CLR)

ASP.NET's successor is ASP.NET Core. It is a re-implementation of ASP.NET as a modular web framework, together with other frameworks like Entity Framework. The new framework uses the new open-source .NET Compiler Platform (codename "Roslyn") and is cross platform. ASP.NET MVC, ASP.NET Web API, and ASP.NET Web Pages (a platform using only Razor pages) have merged into a unified MVC 6.[

Includes:  10 Articles  700 Skill Questions  10 Skill Videos  20 Quiz Sections

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Asp.net Fundamental Skills - For Beginners & Professionals
ASP.NET is an open-source server-side web application framework designed for web development to produce dynamic web pages. It was developed by Microsoft to allow programmers to build dynamic web sites, web applications and web services.

 History

"The history of Asp.net begins with the first product – In 2002, Programming Asp.net, known to many Php programmers as the "Asp.net" because of its cover, was published and became the de facto reference for the language.."

 Characteristics
  • ASP.NET Web pages, known officially as Web Forms, are the main building blocks for application development in ASP.NET. There are two basic methodologies for Web Forms, a web application format and a web site format. Web applications need to be compiled before deployment, while web sites structures allows the user to copy the files directly to the server without prior compilation. Web forms are contained in files with a ".aspx" extension; these files typically contain static (X)HTML markup or component markup. The component markup can include server-side Web Controls and User Controls that have been defined in the framework or the web page.
 Code-behind model
  • Microsoft recommends dealing with dynamic program code by using the code-behind model, which places this code in a separate file or in a specially designated script tag. Code-behind files typically have names like "MyPage.aspx.cs" or "MyPage.aspx.vb" while the page file is MyPage.aspx (same filename as the page file (ASPX), but with the final extension denoting the page language). This practice is automatic in Visual Studio and other IDEs, though the user can change the code-behind page. Also, in the web application format, the pagename.aspx.cs is a partial class that is linked to the pagename.designer.cs file
 Directives
  • A directive is a special instruction on how ASP.NET should process the page. The most common directive is which can specify many attributes used by the ASP.NET page parser and compiler.
 State management
  • ASP.NET applications are hosted by a Web server and are accessed using the stateless HTTP protocol. As such, if an application uses stateful interaction, it has to implement state management on its own. ASP.NET provides various functions for state management. Conceptually, Microsoft treats "state" as GUI state. Problems may arise if an application must track "data state"; for example, a finite-state machine that may be in a transient state between requests (lazy evaluation) or takes a long time to initialize. State management in ASP.NET pages with authentication can make Web scraping difficult or impossible.
 Application
  • pplication state is held by a collection of shared user-defined variables. These are set and initialized when the Application_OnStart event fires on the loading of the first instance of the application and are available until the last instance exits. Application state variables are accessed using the Applications collection, which provides a wrapper for the application state. Application state variables are identified by name. Application is state management.
 Session State
  • Server-side session state is held by a collection of user-defined session variables that are persistent during a user session. These variables, accessed using the Session collection, are unique to each session instance. The variables can be set to be automatically destroyed after a defined time of inactivity even if the session does not end. Client-side user session is maintained by either a cookie or by encoding the session ID in the URL itself
 Server-Side Caching
  • ASP.NET offers a "Cache" object that is shared across the application and can also be used to store various objects. The "Cache" object holds the data only for a specified amount of time and is automatically cleaned after the session time-limit elapses.
 Template engine
  • ASP.NET 2.0 introduced the concept of master pages, which allow for template-based page development. A Web application can have one or more master pages, which, beginning with ASP.NET 2.0, can be nested. Master templates have place-holder controls, called ContentPlaceHolders to denote where the dynamic content goes, as well as HTML and JavaScript shared across child pages..
 Great Achievement
  • Asp.Net drastically reduces the amount of code required to build large applications.
  • Easy to use.
  • ntroduction of view state helps in maintaining state of the controls automatically between the postbacks events..
  • It provides better performance by taking advantage of early binding, just-in-time compilation, native optimization, and caching services right out of the box.
  • Stable.
 Currently Version :-As of November 2017 the following versions are supported by Microsoft:
  • 1.0   January 16, 2002
  • 1.1   April 24, 2003
  • 2.0   November 7, 2005
  • 3.0   November 21, 2006
  • 3.5   November 19, 2007
  • 3.5 pack 1   August 11, 2008
  • 4.0   April 12, 2010
  • 4.5   August 15, 2012
  • 4.5.1   October 17, 2013
  • 4.5.2   May 5, 2014
  • 4.6   July 20, 2015
  • 5 RC1   November 18, 2015
Includes:  10 Articles  700 Skill Questions  10 Skill Videos  20 Quiz Sections
 Asp.net Programming Language Introduction
  • The ability to write the Asp.net language — the cornerstone of all Asp.net operations — is essential for anyone who develops Asp.net applications. In this training course, you learn how to optimize the accessibility and maintenance of data with the Asp.net programming language, and gain a solid foundation for building and manipulating of Asp.net programming.
 Asp.net - Data types
 Asp.net - Functions
 Asp.net - AMP Packages
 Object Oriented & Reflexivity
 Package, Module
 Bags and Lists
 Numbers, Strings
 Loops
 Server-side caching
 Mock Tests & Assignments
  • Each Module will be followed by objective mockup tests and practical assignments which help you to monitor your learning progress and Evaluate yourself.
 Support Any Device such as Desktop,Laptop,Mobile, on Any Device
 Motivational Videos
 Real-life Case Studies
 365 Days Access
  • You get 365 days access to the Learning Management System (LMS). This includes video, course material, exercise files and ppts used during the session.
 24x7 Support
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 Q1. What is Managed or Unmanaged Code?
  • Managed Code -“The code, which is developed in .NET framework is known as managed code. This code is directly executed by CLR with the help of managed code execution. Any language that is written in .NET Framework is managed code”.
  • Unmanaged Code -The code, which is developed outside .NET framework is known as unmanaged code.“Applications that do not run under the control of the CLR are said to be unmanaged, and certain languages such as C++ can be used to write such applications, which, for example, access low - level functions of the operating system. Background compatibility with the code of VB, ASP and COM are examples of unmanaged code”.
 Q2.What is Boxing and Unboxing?
  • Boxing:-Boxing is the process of converting a value type data type to the object or to any interface data type which is implemented by this value type. When the CLR boxes a value means when CLR is converting a value type to Object Type, it wraps the value inside a System.Object and stores it on the heap area in application domain.
  • Unboxing:-Unboxing is also a process which is used to extract the value type from the object or any implemented interface type. Boxing may be done implicitly, but unboxing have to be explicit by code.
 Q3. Can “this” be used within a static method?
  • We can't use this in static method because keyword 'this' returns a reference to the current instance of the class containing it. Static methods (or any static member) do not belong to a particular instance. They exist without creating an instance of the class and call with the name of a class not by instance so we can’t use this keyword in the body of static Methods, but in case of Extension Methods we can use it the functions parameters. Let’s have a look on “this” keyword.
 Q4. What is sealed class in c#?
  • Sealed classes are used to restrict the inheritance feature of object oriented programming. Once a class is defined as a sealed class, the class cannot be inherited
 Q5. What are partial classes?
  • A partial class is only use to splits the definition of a class in two or more classes in a same source code file or more than one source files. You can create a class definition in multiple files but it will be compiled as one class at run time and also when you’ll create an instance of this class so you can access all the methods from all source file with a same object.
 Q6.What is the Constructor Chaining in C#?
  • constructor chaining is a way to connect two or more classes in a relationship as Inheritance, in Constructor Chaining every child class constructor is mapped to parent class Constructor implicitly by base keyword so when you create an instance of child class to it’ll call parent’s class Constructor without it inheritance is not possible.
 Q7.Can Multiple Catch Blocks executed in c#?
  • we can use multiple Catches block with every try but when any Exceptions is throw by debugger so every catches match this exception type with their signature and catch the exception by any single catch block so that means we can use multiple catches blocks but only one can executed at once
 Q8.What are Indexer in C# .Net?
  • Indexer allows classes to be used in more intuitive manner. C# introduces a new concept known as Indexers which are used for treating an object as an array. The indexers are usually known as smart arrays in C#. They are not essential part of object-oriented programming. An indexer, also called an indexed property, is a class property that allows you to access a member variable of a class using the features of an array.
 Q9. What is Virtual Method in C#?
  • A virtual method is a method that can be redefined in derived classes. A virtual method has an implementation in a base class as well as derived the class. It is used when a method's basic functionality is the same but sometimes more functionality is needed in the derived class. A virtual method is created in the base class that can be overridden in the derived class. We create a virtual method in the base class using the virtual keyword and that method is overridden in the derived class using the override keyword.
 Q10. What is jagged array in C#.Net?
  • A jagged array is an array whose elements are arrays. The elements of a jagged array can be of different dimensions and sizes. A jagged array is sometimes called an "array of arrays." A special type of array is introduced in C#. A Jagged Array is an array of an array in which the length of each array index can differ.
 Q11.What is LINQ in C#?
  • LINQ stands for Language Integrated Query. LINQ is a data querying methodology which provides querying capabilities to .NET languages with a syntax similar to a SQL query LINQ has a great power of querying on any source of data. The data source could be collections of objects, database or XML files. We can easily retrieve data from any object that implements the IEnumerable interface.
 Q12. What is the difference between “dispose” and “finalize” variables in C#?
  • Dispose - This method uses interface – “IDisposable” interface and it will free up both managed and unmanaged codes like – database connection, files etc.
  • Finalize - This method is called internally unlike Dispose method which is called explicitly. It is called by garbage collector and can’t be called from the code.
 Q13. What is the difference between “finalize” and “finally” methods in C#?
  • Finalize – This method is used for garbage collection. So before destroying an object this method is called as part of clean up activity.
  • Finally – This method is used for executing the code irrespective of exception occurred or not.
 Q14. What is the difference between “out” and “ref” parameters in C#?
  • “out” parameter can be passed to a method and it need not be initialized where as “ref” parameter has to be initialized before it is used.
 Q15. Explain String Builder class in C#?
  • This will represent the mutable string of characters and this class cannot be inherited. It allows us to Insert, Remove, Append and Replace the characters. “ToString()” method can be used for the final string obtained from StringBuilder.
 Q16. What is a Cookie?
  • Cookie is a lightweight executable program, which the server posts to client machines.
  • Cookies store the identity of a user at the first visit of the Web site and validate them later of the next visits for their authenticity.
  • The values of a cookie can be transferred between the user’s request and the server’s response.
 Q17.What is the difference between ASP Session State and ASP.Net Session State?
  • ASP session state relies on cookies, Serialize all requests from a client, does not survive process shutdown, Can not maintained across machines in a Web farm.
 Q18.What are the major built in objects in Asp.net?
  • Application
  • Request
  • Response
  • Server
  • Session
  • Context
  • Trace
 Q19.What is a PostBack?
  • The process in which a Web page sends data back to the same page on the server.
 Q20. What is AutoPostBack?
  • If you want a control to postback automatically when an event is raised, you need to set the AutoPostBack property of the control to True.
 Q21. What is a round trip?
  • The trip of a Web page from the client to the server and then back to the client is known as a round trip.
 Q22.What are the types of Cookies in Asp.net?
  • There are two types of Cookies available in Asp.net :
  • .Session Cookie
  • .Persistent Cookie.
 Q23. Explain the features of C#?
  • Constructors and Destructors
  • Properties
  • Passing Parameters
  • Arrays
  • Main
  • XML Documentation and
  • Indexers
 Q24.What is the lifespan for items stored in ViewState?
  • The items stored in ViewState live until the lifetime of the current page expires including the postbacks to the same page.
 Q25.Which is the parent class of the Web server control?
  • The System.Web.UI.Control class is the parent class for all Web server controls.