Capgemini ASP.NET Developer Interview Questions and Answers

LINQ query to retrieve data from a collection

• Use 'from' to specify the data source

• Use 'where' to filter the data

• Use 'select' to define the shape of the result

• Example: var result = from item in collection where item.Property == value select item;

SOLID is a set of five principles for writing clean, maintainable, and scalable object-oriented code.

• Single Responsibility Principle (SRP) - A class should have only one reason to change.

• Open/Closed Principle (OCP) - Classes should be open for extension but closed for modification.

• Liskov Substitution Principle (LSP) - Objects of a superclass should be replaceable with objects of its subclasses without affecting the pro...read more

Explanation of OOP concepts like constructor, delegates, inheritance, and abstract class.

• Constructor is a special method that is called when an object is created.

• Delegates are type-safe function pointers used to reference methods.

• Inheritance is a mechanism that allows a class to inherit properties and methods from another class.

• Abstract class is a class that cannot be instantiated and is used as a base class for other ...read more

MVC is a software architecture pattern that separates an application into three interconnected components: Model, View, and Controller.

• Model represents the data and business logic of the application

• View is responsible for rendering the user interface

• Controller handles user input and updates the model and view accordingly

Action filters are used to perform additional processing before or after an action method executes.

• Action filters are attributes that can be applied to an action method or controller.

• They can be used to perform authentication, logging, caching, and other tasks.

• Action filters can be used to modify the result of an action method.

• There are four types of action filters: Authorization filters, Action filters, Result filters...read more

Output cache stores the output of a page or user control so that it can be quickly retrieved for subsequent requests.

• Output cache is used to improve the performance of web applications.

• It reduces the number of requests made to the server by storing the output of a page or user control.

• Output cache can be set at the page level or at the application level.

• It can be configured to expire after a certain amount of time or w...read more