Http

Posted Date: 09 Dec 2009 Posted By:: vamshi Member Level: Silver Member Rank: 3914 Points: 1 Responses: 2

what is httpcontext?explain
what is automatic properties?explain
what is httphandlers?explain
what is nullable?explain

Responses

#451621 Author: Asheej T K Member Level: Diamond Member Rank: 2 Date: 09/Dec/2009 Rating: Points: 2
HttpContext Each time a Web server receives a request for an ASP.NET resource - be it an ASP.NET Web page, a Web service, or any other request that is mapped in IIS to the ASP.NET engine - an instance of the System.Web.HttpContext object is created. This class contains information about the request. For example, the HttpContext class has the "intrinsic" objects you're familiar with: Request, Response, Session, Application, Server, and Cache. HttpContext contains information about the current user making the request in its User property, it stores information about any errors that have occurred in its Errors property. For more info http://msdn.microsoft.com/en-us/library/system.web.httpcontext.aspx Refer below link for Http Handler http://www.csharpfriends.com/Articles/getArticle.aspx?articleID=392 Nullable Nullable in .Net 2.0, helps to determine whether variable has been assigned a value or not For more info http://www.c-sharpcorner.com/UploadFile/mosessaur/nullabletypes08222006164135PM/nullabletypes.aspx automatic properties http://weblogs.asp.net/gunnarpeipman/archive/2009/11/01/net-framework-4-0-vb-net-supports-automatic-properties.aspx Regards, Asheej T K Microsoft MVP[ASP.NET/IIS] DotNetSpider MVM Dotnet Galaxy

#451637 Author: srinivasan Member Level: Gold Member Rank: 365 Date: 09/Dec/2009 Rating: Points: 2
HttpContext is the object that contains all the infromation about the particular, individual HTTP request that is currently running. That is the request when this HttpContext is accessed. For example when you use Request property on Page, you are actually using System.Web.HttpContext.Current.Request that is the Request related stuff bundled with the current HTTP request. System is such that when IIS receives request and forwards it to be handled by ASP.NET, the HTTP runtime in ASP.NEt resolves the request to determine the proper HTTP handler or Http handler factory that is invoked. Then HttpModules perform preprocessing of the request and after that Http handler will process the request. After that some HTTP modules perform postprocessing of the request and finally response is sent to the client. One of the first object HTTP runtime creates after request is received, is the HttpContext. After that HTTP runtime makes it available for other components in the processing like the Page. So HttpContext is key link object in delivering request related data over the whole request processing (that involves HTTP runtime, HttpApplication (where HTTP modules reside and do their work), and alsoy the System.Web.UI.Page in case of ASP.NEt Pages to process the request)) ------------------------ automatic properties refer http://community.bartdesmet.net/blogs/bart/archive/2007/03/03/c-3-0-automatic-properties-explained.aspx httphandlers refer http://www.developerfusion.com/article/4643/implementing-http-handlers-in-aspnet/ nullable: What is Nullable Type in .Net 2.0? Nullable in .Net 2.0, helps to determine whether variable has been assigned a value or not. Example: Quiz application having option yes/no, but it should displayed “Not Attempted” when user does not make any choice. Declaring a variable as nullable enables the HasValue and Value members. Nullable b = null; -OR- // Shorthand notation for declaring nullable type, only for C# bool? b = null;

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