HttpApplication.PreSendRequestHeaders Event
Definition
Important
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Occurs just before ASP.NET sends HTTP headers to the client.
public:
event EventHandler ^ PreSendRequestHeaders;
public event EventHandler PreSendRequestHeaders;
member this.PreSendRequestHeaders : EventHandler
Public Custom Event PreSendRequestHeaders As EventHandler
Event Type
Remarks
For more information about how to handle events, see Handling and Raising Events.
Warning
Do not use PreSendRequestHeaders
with managed modules that implement IHttpModule
. Setting these properties can cause issues with asynchronous requests. The combination of Application Requested Routing (ARR) and websockets might lead to access violation exceptions that can cause w3wp to crash. For example, iiscore!W3_CONTEXT_BASE::GetIsLastNotification+68 in iiscore.dll has caused an access violation exception (0xC0000005).
Applies to
See also
.NET
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