Too many arguments in BeginXXX for FromAsync?

Question

I have an async method with the following signature:

IAsyncResult BeginGetMyNumber(string foo, string bar, string bat, int bam, AsyncCallback callback, object s         


        

Answer 1

Actually it seems I can use the overloaded method for Factory.FromAsync( that takes an IAsyncResult object as the first argument and a callback method as the second:

result = Task.Factory.FromAsync(
                instance.BeginGetMyNumber("foo", "bar", "bat", 1, null, null),
                instance.EndGetMyNumber);