How to get rid of serialized nil attribute

[=?iso-8859-1?q?Norbert_P=FCrringer?=]

Hello there,

I've got following serializable property:

[XmlElementAttribute("f", IsNullable = true)]
public string[] Field
{
get { return _fields; }
set { _fields = value; }
}

If that array contains null values, the serializer creates following
XML code:

<f>6389</f>
<f d6p1:nil="true" xmlns:d6p1="http://www.w3.org/2001/
XMLSchema-instance" />
<f d6p1:nil="true" xmlns:d6p1="http://www.w3.org/2001/
XMLSchema-instance" />
<f d6p1:nil="true" xmlns:d6p1="http://www.w3.org/2001/
XMLSchema-instance" />
<f>1346.25</f>
<f d6p1:nil="true" xmlns:d6p1="http://www.w3.org/2001/
XMLSchema-instance" />
<f d6p1:nil="true" xmlns:d6p1="http://www.w3.org/2001/
XMLSchema-instance" />

I don't like that "d6p1:nil="true" xmlns:d6p1="http://www.w3.org/2001/
XMLSchema-instance" part. I need an empty f tag, but I don't want to
have the nil and namespace part. How do I get rid of that?

Thanks,
Norbert

[Martin Honnen]

Norbert Pürringer wrote:

I've got following serializable property:

[XmlElementAttribute("f", IsNullable = true)]
public string[] Field
{
get { return _fields; }
set { _fields = value; }
}

If that array contains null values, the serializer creates following
XML code:

<f>6389</f>
<f d6p1:nil="true" xmlns:d6p1="http://www.w3.org/2001/
XMLSchema-instance" />
<f d6p1:nil="true" xmlns:d6p1="http://www.w3.org/2001/
XMLSchema-instance" />
<f d6p1:nil="true" xmlns:d6p1="http://www.w3.org/2001/
XMLSchema-instance" />
<f>1346.25</f>
<f d6p1:nil="true" xmlns:d6p1="http://www.w3.org/2001/
XMLSchema-instance" />
<f d6p1:nil="true" xmlns:d6p1="http://www.w3.org/2001/
XMLSchema-instance" />

I don't like that "d6p1:nil="true" xmlns:d6p1="http://www.w3.org/2001/
XMLSchema-instance" part. I need an empty f tag, but I don't want to
have the nil and namespace part. How do I get rid of that?

Well you can remove the IsNullable = true from your element, that way
(as long as the type is string/xs:string) the element will have an empty
string value.
As long as you insist on IsNullable = true you will have to live with
the xsi:nil="true" and the namespace declaration as that is the way how
the W3C XSD schema language defines null/nil values to be marked up and
be distinguished from empty string values.

--

Martin Honnen --- MVP XML
http://JavaScript.FAQTs.com/

[=?iso-8859-1?q?Norbert_P=FCrringer?=]

On 9 Nov., 18:14, Martin Honnen <[e-mail]:

Well you can remove the IsNullable = true from your element, that way
(as long as the type is string/xs:string) the element will have an empty
string value.
As long as you insist on IsNullable = true you will have to live with
the xsi:nil="true" and the namespace declaration as that is the way how
the W3C XSD schema language defines null/nil values to be marked up and
be distinguished from empty string values.

Is there really no chance to get at least rid of the namespace? I can
live with xsi:nil="true", but that namespace can extremely multiply
the size of the XML stream.

Norbert