C# and Asp.Net Question and Answers(All in one)

Introduction

My this article provides a collection of numerous .Net, C#, ADO.NET, Web Services, .Net Framework questions and answers for which a reader has to look around for entire internet on different community web sites. Most of the questions and answers you must have already read. The purpose of this article is to consolidate at the most study material related to .Net at one single place.

ASP.NET

What is view state and use of it?The current property settings of an ASP.NET page and those of any ASP.NET server controls contained within the page. ASP.NET can detect when a form is requested for the first time versus when the form is posted (sent to the server), which  allows you to program accordingly.

What are user controls and custom controls?Custom controls:
 A control authored by a user or a third-party software vendor that does not belong to   the .NET Framework class library. This is a generic term that includes user controls. A  custom server control is used in Web Forms (ASP.NET pages). A custom client control is used  in Windows Forms applications.

User Controls:
In ASP.NET: A user-authored server control that enables an ASP.NET page to be re-used   as a server control. An ASP.NET user control is authored declaratively  and persisted as a  text file with an .ascx extension. The ASP.NET page framework compiles a user control on  the fly to a class that derives from the        System.Web.UI.UserControl class.

What are the validation controls?A set of server controls included with ASP.NET that test user input in HTML and Web server  controls for programmer-defined requirements. Validation controls perform input checking in server code. If the user is working with a browser that supports DHTML, the validation  controls can also perform validation using client script.

What's the difference between Response.Write() andResponse.Output.Write()?The latter one allows you to write formattedoutput.

What methods are fired during the page load? Init () When the page is instantiated, Load() - when the page is loaded into server  memory,PreRender () - the brief moment before the page is displayed to the user  as HTML, Unload() - when page finishes loading.

Where does the Web page belong in the .NET Framework class hierarchy?System.Web.UI.Page

Where do you store the information about the user's locale?System.Web.UI.Page.Culture

What's the difference between Codebehind="MyCode.aspx.cs" and Src="MyCode.aspx.cs"?CodeBehind is relevant to Visual Studio.NET only.