Question

I have a foreach loop which is below:

 foreach (var rec in lstPRSCRPT)
          {
              var OrderItemQuery = GV.dbContext.Load(GV.dbContext.GetOrdritemsQuery (rec.PresNo));
              OrderItemQuery.Completed += new EventHandler(OrderItemQuery_Completed);              
          }       

In the OrderItemQuery_Completed event, for each call back, I have some calculations to find if certian condition is reached. If so, I dont want to get any further OrderItemQuery_Completed call back. Is there a way I can do that? Is there any way to stop the OrderItemQuery_Completed from being fired.

I unscubscirbed the event and I get an eror as shown in pic:

Answer 1

You can unsubscribe from this event in the handler like this:

private void OrderItemQuery_Completed(object sender, ...) 
{
    var query = (OrderItemsQuery)sender;
    query.Completed -= OrderItemQuery_Completed;
    ....
}