ASP.NET Fire and Forget (One Way) Web Service

I’ve create a regular old ASMX web service in ASP.NET and added SoapDocumentMethod(OneWay = true)] to the function call as I’ve read this is supposed to make the call Asynchronous. However I call this in my code and it definitely does not make the call asynchronous, my page just sits there waiting for the function to finish working. What gives?

[SoapDocumentMethod(OneWay = true)]
[WebMethod(EnableSession = true)]
public void UpdateAccounts()
{
 //do work
}

//call the function
GlobalServices service = new GlobalServices();
service .UpdateAccounts()

Answers:

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Method 1

You still have to make the call using the Async method. You should make the call to service.UpdateAccountsAsync() in this case.

Method 2

Are you returning a value? The documentation for OneWay states that “fire and forget” web methods cannot return a value or have out parameters.

http://msdn.microsoft.com/en-us/library/system.web.services.protocols.soapdocumentmethodattribute.oneway(VS.80).aspx

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