Question

private void GeoCode_Method1(string myaddress, int waypointIndex, string callingUser)
{          
    GCService.GeocodeCompleted += new EventHandler<NSpace.GCService.GeocodeCompletedEventArgs>(GeoCode_Method1_GeocodeCompleted);
    GCService.GeocodeAsync(request, waypointIndex);
}

void GeoCode_Method1_GeocodeCompleted(object sender, NSpace.GCService.GeocodeCompletedEventArgs e) 
{
   //***QUESTION: how do I access variable "callinguser" from GeoCode_Method1 in this method??
}

When I call into GeoCode_Method1 I send in “callinguser” string variable, and i would like to access this in GeoCode_Method1_GeocodeCompleted (triggered when the async GeoCodingAsync call is done). How do I do this?

Answer 1

The easiest way to do this is by using a C# lambda expression as the event handler. This lambda expression can then call into the GeoCode_Method1_GeocodeCompleted method and pass along the callinguser parameter.

GCService.GeocodeCompleted += 
  (sender, e) => GeoCode_Method1_GeocodeCompleted(callinguser, sender, e);
GCService.GeocodeAsync(request, waypointIndex); 

void GeoCode_Method1_GeocodeCompleted(
  string callingUser, 
  object sender, 
  Space.GCService.GeocodeCompletedEventArgs e)  { 
     //***QUESTION: how do i access variable "callinguser" from GeoCode_Method1 in this method?? 
}