Cannot serialize object of type System.Object[,]. Multidimensional arrays are not supported

[john harkin]

Hi,
I get this on server when trying to retun a 2 dim array.
I apprecaite that they are not supported as per
[url]http://support.microsoft.com/default.aspx?scid=kb;en-us;316273[/url]

however i'm looking for as a work around as my web service is a layer
in front of an existing com object which cannot be changed and it
returns the 2 dim array.

All thoughts welcome.

JOhn

[Christoph Schittko [MVP]]

You can return jagged arrays, i.e.

System.Object[][] instead of System.Object[,].

HTH,
Christoph Schittko
MVP XML
[url]http://weblogs.asp.net/cschittko[/url]

> -----Original Message-----
> From: john harkin [mailto:jjhnospam@yahoo.co.uk]
> Posted At: Tuesday, September 21, 2004 2:58 AM
> Posted To: microsoft.public.dotnet.framework.aspnet.webservic es
> Conversation: Cannot serialize object of type System.Object[,].
> Multidimensional arrays are not supported
> Subject: Cannot serialize object of type System.Object[,].
> Multidimensional arrays are not supported
>
> Hi,
> I get this on server when trying to retun a 2 dim array.
> I apprecaite that they are not supported as per
> [url]http://support.microsoft.com/default.aspx?scid=kb;en-us;316273[/url]
>
> however i'm looking for as a work around as my web service is a layer
> in front of an existing com object which cannot be changed and it
> returns the 2 dim array.
>
> All thoughts welcome.
>
> JOhn

[john harkin]

Hi,
Thanks very much for this and it worked.
I'm actually need to retun an object which could contain object[][].
One thing i notice


[WebMethod]
public object ReturnJaggedArrayAsObject()
{
object[][] numbers = new object[2][] { new object[] {2,"string1",
24.56}, new object[] {4,"string2", 56.78} };
object a = (object) numbers;
return a;

}

didn't work and got a serialisation error but when i added

[WebMethod]
public object[][] Fred()
{
object[][] numbers = new object[2][] { new object[] {2,"string1",
24.56}, new object[] {4,"string2", 56.78} };

return numbers;

}

to the source file i was able to call ReturnJaggedArrayAsObject.
It appears that by having Fred it knows about object[][] in wsdl.
Any way of achieving this without defining Fred?

Regards


"Christoph Schittko [MVP]" <INVALIDEMAIL@austin.rr.com> wrote in message news:<#$za3n9nEHA.2616@tk2msftngp13.phx.gbl>...

> You can return jagged arrays, i.e.
>
> System.Object[][] instead of System.Object[,].
>
> HTH,
> Christoph Schittko
> MVP XML
> [url]http://weblogs.asp.net/cschittko[/url]
>

> > -----Original Message-----
> > From: john harkin [mailto:jjhnospam@yahoo.co.uk]
> > Posted At: Tuesday, September 21, 2004 2:58 AM
> > Posted To: microsoft.public.dotnet.framework.aspnet.webservic es
> > Conversation: Cannot serialize object of type System.Object[,].
> > Multidimensional arrays are not supported
> > Subject: Cannot serialize object of type System.Object[,].
> > Multidimensional arrays are not supported
> >
> > Hi,
> > I get this on server when trying to retun a 2 dim array.
> > I apprecaite that they are not supported as per
> > [url]http://support.microsoft.com/default.aspx?scidkb;en-us;316273[/url]
> >
> > however i'm looking for as a work around as my web service is a layer
> > in front of an existing com object which cannot be changed and it
> > returns the 2 dim array.
> >
> > All thoughts welcome.
> >
> > JOhn

>
> --

[Christoph Schittko [MVP]]

Have you tried declaring the array via an Xml serialization attribute on
the return value:

[WebMethod]
[return: XmlElement(typeof(object[][]))]
public object ReturnJaggedArrayAsObject()
{
object[][] numbers = new object[2][]
{
new object[] {2,"string1", 24.56}, new object[]
{4,"string2", 56.78} };


You may have to attach more attributes to declare the types in the
array... not sure at all if this works.

HTH
Christoph Schittko
MVP XML
[url]http://weblogs.asp.net/cschittko[/url]

> -----Original Message-----
> From: john harkin [mailto:jjhnospam@yahoo.co.uk]
> Posted At: Thursday, September 23, 2004 6:18 AM
> Posted To: microsoft.public.dotnet.framework.aspnet.webservic es
> Conversation: Cannot serialize object of type System.Object[,].
> Multidimensional arrays are not supported
> Subject: Re: Cannot serialize object of type System.Object[,].
> Multidimensional arrays are not supported
>
> Hi,
> Thanks very much for this and it worked.
> I'm actually need to retun an object which could contain object[][].
> One thing i notice
>
>
> [WebMethod]
> public object ReturnJaggedArrayAsObject()
> {
> object[][] numbers = new object[2][] { new

object[]

> {2,"string1",
> 24.56}, new object[] {4,"string2", 56.78} };
> object a = (object) numbers;
> return a;
>
> }
>
> didn't work and got a serialisation error but when i added
>
> [WebMethod]
> public object[][] Fred()
> {
> object[][] numbers = new object[2][] { new

object[]

> {2,"string1",
> 24.56}, new object[] {4,"string2", 56.78} };
>
> return numbers;
>
> }
>
> to the source file i was able to call ReturnJaggedArrayAsObject.
> It appears that by having Fred it knows about object[][] in wsdl.
> Any way of achieving this without defining Fred?
>
> Regards
>
>
> "Christoph Schittko [MVP]" <INVALIDEMAIL@austin.rr.com> wrote in

message

> news:<#$za3n9nEHA.2616@tk2msftngp13.phx.gbl>...

> > You can return jagged arrays, i.e.
> >
> > System.Object[][] instead of System.Object[,].
> >
> > HTH,
> > Christoph Schittko
> > MVP XML
> > [url]http://weblogs.asp.net/cschittko[/url]
> >

> > > -----Original Message-----
> > > From: john harkin [mailto:jjhnospam@yahoo.co.uk]
> > > Posted At: Tuesday, September 21, 2004 2:58 AM
> > > Posted To: microsoft.public.dotnet.framework.aspnet.webservic es
> > > Conversation: Cannot serialize object of type System.Object[,].
> > > Multidimensional arrays are not supported
> > > Subject: Cannot serialize object of type System.Object[,].
> > > Multidimensional arrays are not supported
> > >
> > > Hi,
> > > I get this on server when trying to retun a 2 dim array.
> > > I apprecaite that they are not supported as per
> > > [url]http://support.microsoft.com/default.aspx?scidkb;en-us;316273[/url]
> > >
> > > however i'm looking for as a work around as my web service is a

layer

> > > in front of an existing com object which cannot be changed and it
> > > returns the 2 dim array.
> > >
> > > All thoughts welcome.
> > >
> > > JOhn

> >
> > --