Question

We have a service to update customer information to server. One service call takes around few seconds, which is normal.

Now we have a new page where at one instance around 35-50 Costumers information can be updated. Changing service interface to accept all customers together is out of question at this point.

I need to call a method (say “ProcessCustomerInfo”), which will loop through customers information and call web service 35-50 times. Calling service asynchronously is not of much use.

I need to call the method “ProcessCustomerInfo” asynchronously. I am trying to use RegisterAsyncTask for this. There are various examples available on web, but the problem is after initiating this call if I move away from this page, the processing stops.

Is it possible to implement Fire and Forget method call so that user can move away (Redirect to another page) from the page without stopping method processing?

Answer 1

Details on: http://www.codeproject.com/KB/cs/AsyncMethodInvocation.aspx

Basically you can create a delegate which points to the method you want to run asynchronously and then kick it off with BeginInvoke.

// Declare the delegate - name it whatever you would like
public delegate void ProcessCustomerInfoDelegate();

// Instantiate the delegate and kick it off with BeginInvoke
ProcessCustomerInfoDelegate d = new ProcessCustomerInfoDelegate(ProcessCustomerInfo); 
simpleDelegate.BeginInvoke(null, null);

// The method which will run Asynchronously
void ProcessCustomerInfo()
{
   // this is where you can call your webservice 50 times
}