A theme is a collection of settings that define the look of controls and web pages. These themes are applied across all the pages in a web application to maintain a consistent appearance. Themes are included images and skin files; the skin files set the visual properties of ASP.NET controls. Themes are of two types: Page Theme A Page theme contains the control skins, style sheets, graphic files, and other resources inside the subfolder of the App_Theme folder in the…

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Caching is one of the most interesting concepts and operations in ASP.NET. If you can handle it, you can run any web application by applying the caching concept depending on the requirements. Caching is for providing solutions or the results to the users depending on their request, admin needs to recreate the pages often depending on user requests…STOP!!! “A cache simply stores the output generated by a page in the memory and this saved output (cache) will serve us (users)…

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View State is the method to preserve the Value of the Page and Controls between round trips. It is a Page-Level State Management technique. View State is turned on by default and normally serializes the data in every control on the page regardless of whether it is actually used during a post-back. A web application is stateless. That means that a new instance of a page is created every time when we make a request to the server to get…

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Razor is a markup syntax that lets you embed server-based code (Visual Basic and C#) into web pages. The server-based code can create dynamic web content on the fly, while a web page is written to the browser. When a web page is called, the server executes the server-based code inside the page before it returns the page to the browser. By running on the server, the code can perform complex tasks, like accessing databases. Razor is based on ASP.NET,…

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ASP.NET applications can be developed and run on any operating systems like Windows, Linux, macOS, and Docker. Hence it is called a Cross-platform framework. When discussing ASP.NET in the context of being cross-platform, it typically refers to ASP.NET Core rather than traditional ASP.NET. Here’s a breakdown: ASP.NET Core: This is a redesign of ASP.NET, developed by Microsoft, which is an open-source, cross-platform framework for building modern, cloud-based, internet-connected applications. ASP.NET Core can run on Windows, macOS, and Linux, making it…

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REST (Representational State Transfer) is an architectural style for designing applications and it dictates to use HTTP for making calls for communications instead of complex mechanism like CORBA, RPC or SOAP. There are few principles associated with REST architectural style: Everything is a resource i.e. File, Images, Video, WebPage etc. Every Resource is identified by a Unique Identifier. Use simple and Uniform Interfaces. Everything is done via representation (sending requests from a client to server and receiving responses from server…

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Microsoft has provided an implementation of AJAX functionality known as ASP.NET AJAX. AJAX stands for Asynchronous JavaScript and XML. This is a cross-platform technology that speeds up response time and reduces traffic between client and server. ASP.NET AJAX is a set of extensions to ASP.NET and comes with reusable AJAX controls. In an ASP.NET interview, if you’re asked about ASP.NET AJAX, here’s a concise and comprehensive answer: ASP.NET AJAX is a framework developed by Microsoft for building dynamic and interactive…

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There are three types of authentication available in ASP.NET: Windows Authentication: This authentication method uses built-in Windows security features to authenticate a user. Forms Authentication: Authenticates against a customized list of users or users in a database. Passport Authentication: Validates against Microsoft Passport service which is basically a centralized authentication service. In ASP.NET, there are primarily three types of authentication mechanisms: Windows Authentication: This method relies on Windows accounts for authenticating users. Users’ credentials are verified against the Windows user…

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Caching is a mechanism that improves performance for an application by storing data in the memory for faster access. When the application accesses data from Cache (i.e. in-memory) instead of fetching it from the original data store (maybe a database), it definitely improves performance. But Caching benefits are not limited only to performance; it also improves application Scalability and Availability.

The difference between session and application object is that all users share one Application object and with sessions, there is one session object for each user. Data stored in the application object can be shared by all the sessions of the application. Application object stores data in the key-value pair. Session object stores session-specific information and the information are visible within the session only. ASP.NET creates unique SessionId for each session of the application. SessionIDs are maintained either by an…

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