i have 3 classes, class 1 has reference to class 2, class 2 has reference to class 3. i want to pass a value from class 3 to class 1, so 3 creates an event, 2 handels it then creates another event which 1 handels
the code for creating and handeling between each is the same except for the names however 3 -> 2 works but 2 -> 1 always failes with object not set to instance error. in debug it shows the event is set to undefined value.
In debug if i break after 1 sets the handel for 2 and go throguth the instance of 2 to see the event it does have a valid value, however when it gets to that part of 2 it nolonger has that value
so why is 3-2 working but not 2-1 when the code is almsot identical... i have event rewritten all the stuff with different names and its still the same
i have
Namespace
public delegate void MenuRefreshHandler(object o, ArrayList a)
class
private class2 c2
class1(
c2 = new c2()
c2.EventPassMenuRefresh += new MenuRefreshHandler(this.catchthing)
public void catchthing(object o, ArrayList a
//display cod
class
private class3 c3
public event MenuRefreshHandler EventPassMenuRefresh
class2(
c3 = new c3()
c3.EventMenuRefresh += new MenuRefreshHandler(this.MenuRefresh)
public void MenuRefresh(object o, ArrayList a
EventPassMenuRefresh(o,a)
namespace
class
public event MenuRefreshHandler EventMenuRefresh
class3(
/
public void eventmethod(
//stuf
EventMenuRefresh(null, al)
} 1 1489
Spike <an*******@discussions.microsoft.com> wrote: i have 3 classes, class 1 has reference to class 2, class 2 has reference to class 3. i want to pass a value from class 3 to class 1, so 3 creates an event, 2 handels it then creates another event which 1 handels, the code for creating and handeling between each is the same except for the names however 3 -> 2 works but 2 -> 1 always failes with object not set to instance error. in debug it shows the event is set to undefined value.
In debug if i break after 1 sets the handel for 2 and go throguth the instance of 2 to see the event it does have a valid value, however when it gets to that part of 2 it nolonger has that value.
so why is 3-2 working but not 2-1 when the code is almsot identical... i have event rewritten all the stuff with different names and its still the same.
Could you post a short but complete program which demonstrates the
problem?
See http://www.pobox.com/~skeet/csharp/complete.html for details of
what I mean by that.
(The code you posted doesn't give enough information to reproduce the
problem.)
--
Jon Skeet - <sk***@pobox.com> http://www.pobox.com/~skeet
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