Yet another issue with DataColumn inhertiance

Since DataColumn is not sealed I would like to inherit from it and create my
own. Unfortunately it seems that when serializing a DataTable with these
columns, only DataColumn (the base) is serialized and my derived column is
not.

Is there anyway I can use and serialize a derived DataColumn?

-Joe

On Tue, 12 Sep 2006 19:49:39 -0400, "Joe" <jbassking@noemail.noemail> wrote:

>Since DataColumn is not sealed I would like to inherit from it and create my
>own. Unfortunately it seems that when serializing a DataTable with these
>columns, only DataColumn (the base) is serialized and my derived column is
>not.
>
>Is there anyway I can use and serialize a derived DataColumn?
>
>-Joe
>
Did you try marking your column with the Serializable attribute? It's worth a
try.
Good luck with your project,

Otis Mukinfus
http://www.arltex.com
http://www.tomchilders.com

Yes, it has to attribute.

"Otis Mukinfus" <phony@emailaddress.com> wrote in message
news:j0keg2d6mi4nh4p8283qshot8a3aq1s74l@4ax.com...
> On Tue, 12 Sep 2006 19:49:39 -0400, "Joe" <jbassking@noemail.noemail>
> wrote:
>
>>Since DataColumn is not sealed I would like to inherit from it and create
>>my
>>own. Unfortunately it seems that when serializing a DataTable with these
>>columns, only DataColumn (the base) is serialized and my derived column is
>>not.
>>
>>Is there anyway I can use and serialize a derived DataColumn?
>>
>>-Joe
>>
> Did you try marking your column with the Serializable attribute? It's
> worth a
> try.
> Good luck with your project,
>
> Otis Mukinfus
> http://www.arltex.com
> http://www.tomchilders.com

Hi Joe,

The good news is that it is probably possible while the bad news is that it
will be not easy at all.
DataTable uses custom serialization via ISerializable and thus you have to
override GetObjectData and create a proper constructor or use new custom
serialization via attributes (.net 2.0).

--
Miha Markic [MVP C#, INETA Country Leader for Slovenia]
RightHand .NET consulting & development www.rthand.com
Blog: http://cs.rthand.com/blogs/blog_with_righthand/

"Joe" <jbassking@noemail.noemail> wrote in message
news:uTp28%23u1GHA.3464@TK2MSFTNGP03.phx.gbl...
> Yes, it has to attribute.
>
> "Otis Mukinfus" <phony@emailaddress.com> wrote in message
> news:j0keg2d6mi4nh4p8283qshot8a3aq1s74l@4ax.com...
>> On Tue, 12 Sep 2006 19:49:39 -0400, "Joe" <jbassking@noemail.noemail>
>> wrote:
>>
>>>Since DataColumn is not sealed I would like to inherit from it and create
>>>my
>>>own. Unfortunately it seems that when serializing a DataTable with these
>>>columns, only DataColumn (the base) is serialized and my derived column
>>>is
>>>not.
>>>
>>>Is there anyway I can use and serialize a derived DataColumn?
>>>
>>>-Joe
>>>
>> Did you try marking your column with the Serializable attribute? It's
>> worth a
>> try.
>> Good luck with your project,
>>
>> Otis Mukinfus
>> http://www.arltex.com
>> http://www.tomchilders.com
>
>

Hi Miha,

Could you possibly give me an example of using the custom serialization
attributes?

-Joe

"Miha Markic [MVP C#]" <miha at rthand com> wrote in message
news:eeew1Pw1GHA.4484@TK2MSFTNGP02.phx.gbl...
> Hi Joe,
>
> The good news is that it is probably possible while the bad news is that
> it will be not easy at all.
> DataTable uses custom serialization via ISerializable and thus you have to
> override GetObjectData and create a proper constructor or use new custom
> serialization via attributes (.net 2.0).
>
> --
> Miha Markic [MVP C#, INETA Country Leader for Slovenia]
> RightHand .NET consulting & development www.rthand.com
> Blog: http://cs.rthand.com/blogs/blog_with_righthand/
>
> "Joe" <jbassking@noemail.noemail> wrote in message
> news:uTp28%23u1GHA.3464@TK2MSFTNGP03.phx.gbl...
>> Yes, it has to attribute.
>>
>> "Otis Mukinfus" <phony@emailaddress.com> wrote in message
>> news:j0keg2d6mi4nh4p8283qshot8a3aq1s74l@4ax.com...
>>> On Tue, 12 Sep 2006 19:49:39 -0400, "Joe" <jbassking@noemail.noemail>
>>> wrote:
>>>
>>>>Since DataColumn is not sealed I would like to inherit from it and
>>>>create my
>>>>own. Unfortunately it seems that when serializing a DataTable with these
>>>>columns, only DataColumn (the base) is serialized and my derived column
>>>>is
>>>>not.
>>>>
>>>>Is there anyway I can use and serialize a derived DataColumn?
>>>>
>>>>-Joe
>>>>
>>> Did you try marking your column with the Serializable attribute? It's
>>> worth a
>>> try.
>>> Good luck with your project,
>>>
>>> Otis Mukinfus
>>> http://www.arltex.com
>>> http://www.tomchilders.com
>>
>>
>
>

Hi Joe,

Here is an example of how to implement the ISerializable interface.

http://msdn2.microsoft.com/en-us/li...lization.iseria
lizable.aspx

And here is an example of how to use the SerializableAttribute.

http://msdn2.microsoft.com/en-us/li...eattribute.aspx

HTH.

If anything is unclear, please feel free to let us know.

Kevin Yu
Microsoft Online Community Support

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rights.)

Hi Joe,

I'd like to know if this issue has been resolved yet. Is there anything
that I can help. I'm still monitoring on it. If you have any questions,
please feel free to post them in the community.

Kevin Yu
Microsoft Online Community Support
==================================================

(This posting is provided "AS IS", with no warranties, and confers no
rights.)