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

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

This technique (partial function application) works for begin methods with any number of input params.