DefaultHttpHandler.BeginProcessRequest Method
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Initiates an asynchronous call to the HTTP handler.
public:
virtual IAsyncResult ^ BeginProcessRequest(System::Web::HttpContext ^ context, AsyncCallback ^ callback, System::Object ^ state);
public virtual IAsyncResult BeginProcessRequest (System.Web.HttpContext context, AsyncCallback callback, object state);
abstract member BeginProcessRequest : System.Web.HttpContext * AsyncCallback * obj -> IAsyncResult
override this.BeginProcessRequest : System.Web.HttpContext * AsyncCallback * obj -> IAsyncResult
Public Overridable Function BeginProcessRequest (context As HttpContext, callback As AsyncCallback, state As Object) As IAsyncResult
Parameters
- context
- HttpContext
An object that provides references to intrinsic server objects that are used to service HTTP requests.
- callback
- AsyncCallback
The method to call when the asynchronous method call is complete. If callback
is null
, the delegate is not called.
- state
- Object
Any state data that is needed to process the request.
Returns
An IAsyncResult that contains information about the status of the process.
Implements
Exceptions
The preconditions for processing a request fail and either the requested file has the suffix .asp or the request was sent through POST.
Remarks
When creating an HTTP handler for asynchronous use, your handler must implement the asynchronous BeginProcessRequest and EndProcessRequest methods that are called asynchronously by ASP.NET.
Applies to
反馈
https://aka.ms/ContentUserFeedback。
即将发布:在整个 2024 年,我们将逐步淘汰作为内容反馈机制的“GitHub 问题”,并将其取代为新的反馈系统。 有关详细信息,请参阅:提交和查看相关反馈