HttpResponse.IsClientConnected Property
Assembly: System.Web (in system.web.dll)
The IsClientConnected property returns false under the following conditions:
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The connection to the client was terminated. This can occur if the Close method was invoked or the client stopped execution of the Web page or browsed to another page.
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The HttpWorkerRequest object that is handling the request is a null reference (Nothing in Visual Basic) or the HttpWorkerRequest.IsClientConnected method returns false. If a custom HttpWorkerRequest object handles the request, then the HttpWorkerRequest.IsClientConnected method might be set based on custom criteria. For example, the custom worker request might force a time-out after a period of time.
The following code example uses the IsClientConnected property to check whether the client requesting the page remains connected to the server. If IsClientConnected is true, the code calls the Redirect method, and the client will view another page. If IsClientConnected is false, the code calls the End method and all page processing is terminated.