The IHttpHandler interface is implemented by all the handlers. The interface consists of one property called IsReusable. The IsReusable property gets a value indicating whether another request can use the IHttpHandler instance. The method ProcessRequest() allows you to process the current request. This is the core place where all your code goes. This method receives a parameter of type HttpContext using which you can access the intrinsic objects such as Request and Response. The IHttpHandlerFactory interface consists of two methods - GetHandler and ReleaseHandler. The GetHandler() method instantiates the required HTTP handler based on some condition and returns it back to ASP.NET. The ReleaseHandler() method allows the factory to reuse an existing handler.
To use the handle we need to register the handler in web.config
< configuration>
< system.web>
< httpHandlers>
< add verb="*" path="handler.aspx" type="ETG.Base.Applications.ConsoleApp.HttpHandlerExample,HandlerTest"/>
< /httpHandlers>
< /system.web>
< /configuration>

inetinfo.exe is theMicrosoft IIS server running, handling ASP.NET requests among other things.When an ASP.NET request is received (usually a file with .aspx extension), the ISAPI filter aspnet_isapi.dll takes care of it by passing the request tothe actual worker process aspnet_wp.exe. Also read IIS

its is not an object ... it is event function ..., It belong to the class form (ex. frmRegistration ).. in asp each and every web form referred as a class.....

Isolated environment where application executes, single CLR operating system process can contain multiple application domains. There are advantages to having application domains within a single process.

Lower system cost - many application domains can be contained within a single system process.

Each application domain can have different security access levels assigned to them, all within a single process.

Code in one AppDomain cannot directly access code in another AppDomain.

The application in an AppDomain can be stopped without affecting the state of another AppDomain running in the same process.

An Exception in on AppDomain will not affect other AppDomains or crash the entire process that hosts the AppDomains

Generics are the new feature in the c# 2.0. They introduce the concept of Type parameter. This makes it possible to classes and methods that differs the specification of one or more types until the class or method is declared and used by the code, which will be using it. We can declare a generic class like this
public class GenericClass
{ void Add(T input) { }
}
We create an instance of the generic class like this
GenericClass list2 = new GenericClass();

The System.Collection.ArrayList can be used with any objectn, but no type checking is done when objects are passed to methods. You have to manually cast objects back to our type when retrieving; which makes the code harder.

Structure inherit a Class? NO, Class can inherit only from either class or from interface.
Class inherit a Structure ? NO
Struct is sealed type, so class cannot inherit from Struct, so no protected variable alloed inside struct
for example :
public struct BaseSchool
{
protected string OriginalLocation { get; set; } // this line will not compile.
private string Newlocation { get; set; }
public int SchoolId { get; set; }
}

Sponsored by