ASP.NET.in.a.Nutshell.Second.Edition [Electronic resources] نسخه متنی

The HttpContext class represents the
"operating context" of an ASP.NET
application. It provides references to instances of fundamental
classes like HttpApplicationState and
HttpRequest, which are known as intrinsic or
"built-in" objects. The
HttpContext class is provided to
IHttpModule and IHttpHandler
instances (like System.Web.UI.Page and
HttpApplication), which provide these classes
through their own properties. The shared (static) property
Current returns the current
HttpContext, and is useful if you need to access
the built-in ASP.NET objects from another code module like a class
(where you won't have access to the
System.Web.UI.Page properties). One example is a
web service that doesn't inherit from
System.Web.Services.WebService. You can also use
the shared GetAppConfig( ) method to retrieve a
collection object from the web.config file that
contains configuration information. Just specify the configuration
section you want to examine as a parameter (like
"appSettings").

If you are creating your own IHttpHandler class,
you will receive the current instance of the
HttpContext class as a parameter of the
IHttpHandler.ProcessRequest( ) method. To use the
Session property of the
HttpContext class, you must also implement either
the System.Web.SessionState.IReadOnlySessionState
interface or the
System.Web.SessionState.IRequiresSessionState
interface.

public sealed class 
HttpContext  : IServiceProvider {
// Public Constructors
public 
HttpContext (HttpRequest 
request , HttpResponse 
response );
public 
HttpContext (HttpWorkerRequest 
wr );
// Public Static Properties
public static HttpContext 
Current {set; get; }
// Public Instance Properties
public Exception[ ] 
AllErrors {get; }
public HttpApplicationState 
Application {get; }
public HttpApplication 
ApplicationInstance {set; get; }
public Cache 
Cache {get; }
public Exception 
Error {get; }
public IHttpHandler 
Handler {set; get; }
public bool 
IsCustomErrorEnabled {get; }
public bool 
IsDebuggingEnabled {get; }
public IDictionary 
Items {get; }
public HttpRequest 
Request {get; }
public HttpResponse 
Response {get; }
public HttpServerUtility 
Server {get; }
public HttpSessionState 
Session {get; }
public bool 
SkipAuthorization {set; get; }
public DateTime 
Timestamp {get; }
public TraceContext 
Trace {get; }
public IPrincipal 
User {set; get; }
// Public Static Methods
public static object 
GetAppConfig (string 
name );
// Public Instance Methods
public void 
AddError (Exception 
errorInfo );
public void 
ClearError ( );
public object 
GetConfig (string 
name );
public void 
RewritePath (string 
path );
public void 
RewritePath (string 
filePath , string 
pathInfo , string 
queryString );
}

Returned By

HttpApplication.Context,
System.Web.Security.DefaultAuthenticationEventArgs.Context,
System.Web.Security.FormsAuthenticationEventArgs.Context,
System.Web.Security.PassportAuthenticationEventArgs.Context,
System.Web.Security.WindowsAuthenticationEventArgs.Context,
System.Web.Services.WebService.Context,
System.Web.UI.Control.Context

Passed To

Multiple types