问题
I've been experimenting with some code code on Ayende Rahien's blog here which demonstrates using asynchronous HttpHandlers to improve the number of requests that can be processed concurrently.
Unfortunately I can get even the basic example to work. I'm getting the following error:
'System.IO.TextWriter' does not contain a definition for 'WriteAsync' and no extension method 'WriteAsync' accepting a first argument of type 'System.IO.TextWriter' could be found (are you missing a using directive or an assembly reference?)
for the line.
return context.Response.Output.WriteAsync("Hello World!");
I would imagine the method is an extension method added in net4 as part of the Parallel Extensions however for the life of me I can find the correct namespace.
Wouls any of you hardcore csharpers please shed the light.
回答1:
Check out and http://msdn.microsoft.com/en-us/vstudio/async.aspx (under update 1) http://www.hanselman.com/blog/InstallingAndRunningNodejsApplicationsWithinIISOnWindowsAreYouMad.aspx
Might set you on the right line
回答2:
I've been looking at both Scott Hanselman and Ayende's blog and was scratching my head proper.
My solution was to install the Async CTP and to include a reference to AsyncCtpLibrary which is well hidden in my case C:\Users\Administrator\Documents\Microsoft Visual Studio Async CTP\Samples
Kudos to Missing a reference to AsyncCtpLibrary.dll
来源：https://stackoverflow.com/questions/7390491/asynchronous-httphandlers-and-writeasync