Hi Dennis,
Thanks for your feedback.
I am glad your problem has been resolved.
The customer's suggestion will greatly improve our product.
I think you can provide your suggestion to:
http://register.microsoft.com/mswish/suggestion.asp
or email to: (e-mail address removed)
Again, thanks for your information.
Best regards,
Jeffrey Tan
Microsoft Online Partner Support
Get Secure! -
www.microsoft.com/security
This posting is provided "as is" with no warranties and confers no rights.
--------------------
| Reply-To: "Dennis C. Drumm" <
[email protected]>
| From: "Dennis C. Drumm" <
[email protected]>
| References: <
[email protected]>
<
[email protected]>
<
[email protected]>
<
[email protected]>
| Subject: Re: Serialization of SortedList objects when object contains
event
| Date: Thu, 16 Oct 2003 05:43:46 -0400
| Lines: 139
| X-Priority: 3
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|
| Thank you all! The problem has been resolved.
|
| For any MS people that might be monitoring this thread, the VS.NET and
MSDN
| Library could use a little more content on how to add and remove event
| handlers (and probably event handlers in general). There certainly is some
| useful information in them, probably enough for some, but not enough for
| anyone just getting familiar with the concept.
|
| Thanks again,
|
| Dennis
|
|
message
| | > Dennis,
| > Alternative to the event procedures as Nicholas showed, you can use the
| > field attribute modifier:
| >
| > [field: NonSerialized]
| > public event EventHandler MyEvent;
| >
| > Hope this helps
| > Jay
| >
| > | > > Nickolas:
| > >
| > > I thought so, but trying the NonSerialize attribute does not work.
That
| > can
| > > only be used on fields.
| > >
| > > How do I remove/disconnect the event handlers? I would think -= but
the
| > > compiler doesn't like that.
| > >
| > > Alternatively, is there a way to override the deserialization process
| and
| > > add do something with the event handlers at that point?
| > >
| > > Dennis
| > >
| > > "Nicholas Paldino [.NET/C# MVP]" <
[email protected]>
wrote
| > in
| > > message | > > > Dennis,
| > > >
| > > > When you have an event, you must store a reference to the target
| of
| > > the
| > > > event. In other words, a reference to the object that holds the
| method
| > to
| > > > be called when the event is fired is stored by the object firing the
| > > event.
| > > >
| > > > Because of this, when you serialize the object that fires the
| > events,
| > > it
| > > > tries to serialize the event handlers as well.
| > > >
| > > > To get around this, you will have to disconnect the event
| handlers,
| > or
| > > > you could flag the event with the NonSerialized attribute (I am not
| sure
| > > if
| > > > that works). Either way, you have to prevent the event handlers
from
| > > being
| > > > serialized.
| > > >
| > > > Hope this helps.
| > > >
| > > >
| > > > --
| > > > - Nicholas Paldino [.NET/C# MVP]
| > > > - (e-mail address removed)
| > > >
| > > > | > > > > I have a class derived from a SortedList called SystemList that
| > contains
| > > a
| > > > > list of objects indexed with a string value.
| > > > >
| > > > > The definition of the objects contained in the SortedList have a
| > > boolean
| > > > > field and an event that is fired if the boolean field value
changes.
| > > > >
| > > > > The derived SortedList class has an override for the Add method.
The
| > Add
| > > > > method adds an event handler for the object's event for each new
| item
| > > > added
| > > > > to the list. In the program, the events work fine and all seems
| well.
| > > > >
| > > > > However, when I serialize and then try to deserialize the derived
| > > > > SortedList, deserialization fails. If I rem out the line that adds
| the
| > > > event
| > > > > handler in the Add method, everything serializes and deserializes
| jsut
| > > > fine.
| > > > > But with it in I can't deserialize.
| > > > >
| > > > > Can someone suggest what is going wrong here and how I can correct
| it?
| > > > >
| > > > > Thanks,
| > > > >
| > > > > Dennis
| > > > >
| > > > > BTW, the code for the deserialization is:
| > > > >
| > > > > BinaryFormatter bf = new BinaryFormatter();
| > > > >
| > > > > bf.AssemblyFormat = FormatterAssemblyStyle.Simple;
| > > > >
| > > > > IFormatter formatter = bf;
| > > > >
| > > > > Stream stream = new FileStream(name, FileMode.Open,
FileAccess.Read,
| > > > > FileShare.Read);
| > > > >
| > > > > systemList = (SystemList)formatter.Deserialize(stream);
| > > > >
| > > > > fileName = name; // update doc's file name
| > > > >
| > > > > stream.Close();
| > > > >
| > > > >
| > > >
| > > >
| > >
| > >
| >
| >
|
|
|
