XmlSerializationWriter - Specified cast is not valid

[Tamir Khason]

Code
public class RootSerialized
{
[XmlElement("Som eCollection")]
public SomeCollection SomeThings;
}

public class SomeCollection: BaseCollection ,ITypedList ,IBindingList
{
public SomeCollection( ) : base()
{
}
[XmlElement("Som ething")]
public Something this[int index]
{
get
{
return (Something )m_al[index];
}
}
}

During the serialization

XmlSerializer s = new XmlSerializer( typeof( RootSerialized ) );

this this structure return error:
System.InvalidO perationExcepti on: There was an error generating the XML
document. ---> System.InvalidC astException: Specified cast is not valid.

So what is the problem?

--
Tamir Khason
You want dot.NET? Just ask:
"Please, www.dotnet.us "

[Kevin Yu [MSFT]]

RE: XmlSerializatio nWriter - Specified cast is not valid

Hi Tamir,

First of all, I would like to confirm my understanding of your issue. From
your description, I understand that when serializing a class, there is an
System.InvalidO perationExcepti on, which says "There was an error generating
the XML document." is generated. If there is any misunderstandin g, please
feel free to let me know.

Based on my research, this exception is thrown, because the BaseCollection
class is not serializable. This class does not implement the ISerializable
interface and it contains some complex data types. So when the object is
going to be serialized, the Serialize method doesn't know how to convert
data in the object, and the exception is thrown.

HTH.

Kevin Yu
=======
"This posting is provided "AS IS" with no warranties, and confers no
rights."

[Tamir Khason]

Re: XmlSerializatio nWriter - Specified cast is not valid

So how can I serialize such structure?

--
Tamir Khason
You want dot.NET? Just ask:
"Please, www.dotnet.us "


"Kevin Yu [MSFT]" <v-kevy@online.mic rosoft.com> wrote in message
news:zkw3faBYEH A.2900@cpmsftng xa06.phx.gbl...[color=blue]
> Hi Tamir,
>
> First of all, I would like to confirm my understanding of your issue. From
> your description, I understand that when serializing a class, there is an
> System.InvalidO perationExcepti on, which says "There was an error[/color]
generating[color=blue]
> the XML document." is generated. If there is any misunderstandin g, please
> feel free to let me know.
>
> Based on my research, this exception is thrown, because the BaseCollection
> class is not serializable. This class does not implement the ISerializable
> interface and it contains some complex data types. So when the object is
> going to be serialized, the Serialize method doesn't know how to convert
> data in the object, and the exception is thrown.
>
> HTH.
>
> Kevin Yu
> =======
> "This posting is provided "AS IS" with no warranties, and confers no
> rights."
>[/color]

[Simon Smith]

Re: XmlSerializatio nWriter - Specified cast is not valid

On 02 Jul 2004 12:21, "Tamir Khason" wrote:[color=blue]
>So how can I serialize such structure?
>[/color]

Implement Iserializable.

(BTW, if you're going to top post, please don't use the sig dash - '--
' - as a lot of newsreaders will cut off quoting text after it, just like
this answer does.)

--
Simon Smith
simon dot s at ghytred dot com
www.ghytred.com/NewsLook - NNTP Client for Outlook

[Tamir Khason]

Re: XmlSerializatio nWriter - Specified cast is not valid

Outlook Express NewsReader add it automatic. Sorry

--
Tamir Khason
You want dot.NET? Just ask:
"Please, www.dotnet.us "


"Simon Smith" <ghytred@commun ity.nospam> wrote in message
news:ba6fe32be8 3e4c1c8fb17a5b9 ec3b990@ghytred .com...[color=blue]
> On 02 Jul 2004 12:21, "Tamir Khason" wrote:[color=green]
> >So how can I serialize such structure?
> >[/color]
>
> Implement Iserializable.
>
> (BTW, if you're going to top post, please don't use the sig dash - '--
> ' - as a lot of newsreaders will cut off quoting text after it, just like
> this answer does.)
>
> --
> Simon Smith
> simon dot s at ghytred dot com
> www.ghytred.com/NewsLook - NNTP Client for Outlook
>
>[/color]

[Kevin Yu [MSFT]]

Re: XmlSerializatio nWriter - Specified cast is not valid

Hi Tamir,

To serialize such object, we have to implement ISerialization interface so
that the serializer will know how to serialize this object.

Kevin Yu
=======
"This posting is provided "AS IS" with no warranties, and confers no
rights."

[Tamir Khason]

Re: XmlSerializatio nWriter - Specified cast is not valid

Thank you for your reply. The issue solved by workaround
Are there support for this at FW2.0?

--
Tamir Khason
You want dot.NET? Just ask:
"Please, www.dotnet.us "


"Kevin Yu [MSFT]" <v-kevy@online.mic rosoft.com> wrote in message
news:82LwZwjYEH A.2900@cpmsftng xa06.phx.gbl...[color=blue]
> Hi Tamir,
>
> To serialize such object, we have to implement ISerialization interface so
> that the serializer will know how to serialize this object.
>
> Kevin Yu
> =======
> "This posting is provided "AS IS" with no warranties, and confers no
> rights."
>[/color]

[Kevin Yu [MSFT]]

Re: XmlSerializatio nWriter - Specified cast is not valid

Hi Tamir,

Since .NET framwork 2.0 hasn't been officially release, we are not quite
sure about the feature of it, because everything might be changed before
release.

Kevin Yu
=======
"This posting is provided "AS IS" with no warranties, and confers no
rights."