VS Examples

Mark Erbaugh

Pete - W6OP

Mark Erbaugh

Pete,

Thanks for the reply. I found some stuff on MS' website that used a delegate. Is that different from the Action you used? Does the Action have to be allocated each time, or could you allocate it once and re-use it?

Pete - W6OP

Pete - W6OP

I'm not sure you need to remove the property change handler. C# does a pretty good job of cleaning up after itself. Probably the property changed after the handler was removed. You may need to disconnect or dispose of the radio object or whatever is changing the property. If I have time I'll look at the code Flex provided.

Mark_WS7M

I just posted in another thread about this.  It depends completely on your use.  If the event handler remains alive during the entire life of your app then not removing it is fine.  

But if you open a window, then close it and the open sets an event handler but does not remove it.  I have seen some VERY STRANGE behavior with this scenario.

Mark_WS7M

Pete - W6OP

Yes, I should have given a more comprehensive explanation.

Mark Erbaugh

What's the difference between Action and delegate. If you do a Peek definition on Action, it displays code from System.Core that just says public delegate void Action()

Secondly, your code calls new every time you call this.BeginInvoke. Would it be more resource efficient to create a variable of type Action<string,string,bool> and do the new once in the object's constructor and then just reference that object?

Pete - W6OP

You know, I’ve been using that code for so long I have never thought much about it. That would be a good question to post on stackoverflow. As far as efficiency, if it’s not in a loop it really doesn’t matter much.