How to force a generic type eventhandler to a ingeneric one? [modified]

[JUNEYT]

Hello, I get

GetAgencyListCompleted

EventHandler and

GetAgencyListCompletedEventArg

EventArguments delegations from a WebService to check the EventHandler result. The result property (object) of the eventhandler will bring the list of items that what I am looking for. However, I get implicitly conversion error message in the code below. How can solve the problem?. If you know the solution, would you please show me how to do it? Thanks.

//PRONTOWS IS A WEB SERVICE & PSSaleWS is a WEB REFERANCE

// The following statement causes implicit conversion error

ProntoWS.GetAgencyListCompleted += new EventHandler <PSSaleWS.GetAgencyListCompletedEventArgs>(Proxy_AgencyInfoCompleted);

// Here is the proxy class

void Proxy_AgencyInfoCompleted(object sender, PSSaleWS.GetAgencyListCompletedEventArgs Completed)
{
Response.Write("Here");

    }

What a curious mind needs to discover knowledge is noting else than a pin-hole.

modified on Sunday, May 22, 2011 6:26 PM

[Alan N]

The important piece of information missing is the actual type of the GetAgencyListCompleted event but your error message suggests that it is not an

EventHandler <PSSaleWS.GetAgencyListCompletedEventArgs>

If it is typed non generically as

public delegate void GetAgencyListCompletedEventHandler(object sender, PSSaleWS.GetAgencyListCompletedEventArgs Completed);

then the solution is to explicitly create a delegate of the correct type or let the compiler do it for you automatically. either

ProntoWS.GetAgencyListCompleted += new GetAgencyListCompletedEventHandler(Proxy_AgencyInfoCompleted);

or

ProntoWS.GetAgencyListCompleted += Proxy_AgencyInfoCompleted;

If this doesn't solve your issue then please supply more information about the actual types involved. Alan.

[JUNEYT]

Hi Alan! Thank you for your answer, I got rid of the implicit conversion problem with your approach but Proxy_AgencyInfoCompleted never fires up even I invoke the procedure after ProntoWS.GetAgencyListCompleted += new GetAgencyListCompletedEventHandler(Proxy_AgencyInfoCompleted); statement. Web service doesn't have specific asyncronous methods. Therefore I tried to call the method as follows bur Proxy_AgencyInfoCompleted didn't fire up. Do you have any idea where is the problem? Thank you very much.

 ProntoWS.GetAgencyListCompleted += new GetAgencyListCompletedEventHandler(Proxy\_AgencyInfoCompleted);

 // after the following statement I should able to fire up Proxy\_AgencyInfoCompleted

 GetAgencyList = GetAgencyList = ProntoWS.GetAgencyList(Agent, User, Password, GetCityName, "TR");

What a curious mind needs to discover knowledge is noting else than a pin-hole.