XPathNavigator. SelectSingleNod e(xpath) on space returns 0 length s

[David Thielen]

Hi;

I have an element:
<space> </space>

When I call SelectSingleNod e() on it, the InnerXml is a 0 length String, not
a String containing 1 space.

Any ideas?

--
thanks - dave

[Kevin Yu [MSFT]]

Hi dave,

You can set PreserveWhitesp ace to true, so that the space will be preserved.

XmlDocument doc = new XmlDocument();
doc.PreserveWhi tespace = true;
doc.LoadXml("<s pace> </space>");
XmlNode n = doc.SelectSingl eNode("space");
MessageBox.Show (n.InnerXml.Len gth.ToString()) ;

HTH.

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

[David Thielen]

Hi;

Sorry - I forgot to mention - the API I give people is to pass in a
XPathNavigator. So it may not be an XmlDocument. And even if it is, I have no
way of accessing that object.

How do I do this for an XPathNavigator?

--
thanks - dave
"Kevin Yu [MSFT]" wrote:

Hi dave,

You can set PreserveWhitesp ace to true, so that the space will be preserved.

XmlDocument doc = new XmlDocument();
doc.PreserveWhi tespace = true;
doc.LoadXml("<s pace> </space>");
XmlNode n = doc.SelectSingl eNode("space");
MessageBox.Show (n.InnerXml.Len gth.ToString()) ;

HTH.

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

[Kevin Yu [MSFT]]

Hi dave,

There is no way to preserve whitespace in the code directly with
XPathNavigator. You can try to do the following:

1. Add whiteSpace="pre serve" in the tag. <space whiteSpace="pre serve">
</space>
2. If the node is a whitespace, check the XPathNavigator. NodeType property,
it has to be XPathNodeType.S ignificantWhite space or
XPathNodeType.W hitespace.

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

[David Thielen]

Hi;

It's not my xml. I have a library that other people call and pass me their
xml. I wrote all of my code using XPathDocument & XPathNavigator because it
is the "suggested" approach.

But I need to have whitespace preserved. There must be a way as Microsoft
suggests using this approach and not using XmlDocument at all. Could you
please ask the .net team? I find it hard to believe they would not have made
it possible to do this.

--
thanks - dave
"Kevin Yu [MSFT]" wrote:

Hi dave,

There is no way to preserve whitespace in the code directly with
XPathNavigator. You can try to do the following:

1. Add whiteSpace="pre serve" in the tag. <space whiteSpace="pre serve">
</space>
2. If the node is a whitespace, check the XPathNavigator. NodeType property,
it has to be XPathNodeType.S ignificantWhite space or
XPathNodeType.W hitespace.

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

[Chris Lovett]

I'm on the .net xml team and I know for sure that once you've loaded an
XmlDocument without preserveWhitesp ace, you have lost all insignificant
whitespace information and there is no way for the XPathNavigator to
"reinvent" it on the fly. Therefore you'll have to tell folks who are
calling you not to do that. Or you chould change your component design so
that they call you to load the XML that way you can be in control of how the
whitespace processing happens.

"David Thielen" <th*****@nospam .nospam> wrote in message
news:71******** *************** ***********@mic rosoft.com...

Hi;

It's not my xml. I have a library that other people call and pass me their
xml. I wrote all of my code using XPathDocument & XPathNavigator because
it
is the "suggested" approach.

But I need to have whitespace preserved. There must be a way as Microsoft
suggests using this approach and not using XmlDocument at all. Could you
please ask the .net team? I find it hard to believe they would not have
made
it possible to do this.

--
thanks - dave
"Kevin Yu [MSFT]" wrote:

Hi dave,

There is no way to preserve whitespace in the code directly with
XPathNavigator. You can try to do the following:

1. Add whiteSpace="pre serve" in the tag. <space whiteSpace="pre serve">
</space>
2. If the node is a whitespace, check the XPathNavigator. NodeType
property,
it has to be XPathNodeType.S ignificantWhite space or
XPathNodeType.W hitespace.

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

[David Thielen]

Hello;

First off, thank you for answering. Getting a definite no helps as then I
know that I'm not missing something.

Most cases I am passed a Stream so I can call new XmlDocument(Str eam)
instead of new XPathDocument(S tream). But all of the documentation I have
read says that XPathDocument is a lot faster for heavy xpath use - so do I
then lose that efficiency?

And out of curiosity, why does XPathDocument eat all of the whitespace?
Because xml schemes like Excel's SpreadsheetML need it.

--
thanks - dave
"Chris Lovett" wrote:

I'm on the .net xml team and I know for sure that once you've loaded an
XmlDocument without preserveWhitesp ace, you have lost all insignificant
whitespace information and there is no way for the XPathNavigator to
"reinvent" it on the fly. Therefore you'll have to tell folks who are
calling you not to do that. Or you chould change your component design so
that they call you to load the XML that way you can be in control of how the
whitespace processing happens.

"David Thielen" <th*****@nospam .nospam> wrote in message
news:71******** *************** ***********@mic rosoft.com...

Hi;

It's not my xml. I have a library that other people call and pass me their
xml. I wrote all of my code using XPathDocument & XPathNavigator because
it
is the "suggested" approach.

But I need to have whitespace preserved. There must be a way as Microsoft
suggests using this approach and not using XmlDocument at all. Could you
please ask the .net team? I find it hard to believe they would not have
made
it possible to do this.

--
thanks - dave
"Kevin Yu [MSFT]" wrote:

Hi dave,

There is no way to preserve whitespace in the code directly with
XPathNavigator. You can try to do the following:

1. Add whiteSpace="pre serve" in the tag. <space whiteSpace="pre serve">
</space>
2. If the node is a whitespace, check the XPathNavigator. NodeType
property,
it has to be XPathNodeType.S ignificantWhite space or
XPathNodeType.W hitespace.

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

[Chris Lovett]

XPathDocument (and XmlDocument) default to preserveWhitesp ace=false for
backward compatibility reasons.

But you can tell both of these to preservice whitespace as follows:

new XPathDocument(@ "..\\..\\xmlfil e1.xml", XmlSpace.Preser ve);

and
XmlDocument xdoc = new XmlDocument();
xdoc.PreserveWh itespace = true;
"David Thielen" <th*****@nospam .nospam> wrote in message
news:8F******** *************** ***********@mic rosoft.com...

Hello;

First off, thank you for answering. Getting a definite no helps as then I
know that I'm not missing something.

Most cases I am passed a Stream so I can call new XmlDocument(Str eam)
instead of new XPathDocument(S tream). But all of the documentation I have
read says that XPathDocument is a lot faster for heavy xpath use - so do I
then lose that efficiency?

And out of curiosity, why does XPathDocument eat all of the whitespace?
Because xml schemes like Excel's SpreadsheetML need it.

--
thanks - dave
"Chris Lovett" wrote:

I'm on the .net xml team and I know for sure that once you've loaded an
XmlDocument without preserveWhitesp ace, you have lost all insignificant
whitespace information and there is no way for the XPathNavigator to
"reinvent" it on the fly. Therefore you'll have to tell folks who are
calling you not to do that. Or you chould change your component design
so
that they call you to load the XML that way you can be in control of how
the
whitespace processing happens.

"David Thielen" <th*****@nospam .nospam> wrote in message
news:71******** *************** ***********@mic rosoft.com...

> Hi;
>
> It's not my xml. I have a library that other people call and pass me
> their
> xml. I wrote all of my code using XPathDocument & XPathNavigator
> because
> it
> is the "suggested" approach.
>
> But I need to have whitespace preserved. There must be a way as
> Microsoft
> suggests using this approach and not using XmlDocument at all. Could
> you
> please ask the .net team? I find it hard to believe they would not have
> made
> it possible to do this.
>
> --
> thanks - dave
>
>
> "Kevin Yu [MSFT]" wrote:
>
>> Hi dave,
>>
>> There is no way to preserve whitespace in the code directly with
>> XPathNavigator. You can try to do the following:
>>
>> 1. Add whiteSpace="pre serve" in the tag. <space whiteSpace="pre serve">
>> </space>
>> 2. If the node is a whitespace, check the XPathNavigator. NodeType
>> property,
>> it has to be XPathNodeType.S ignificantWhite space or
>> XPathNodeType.W hitespace.
>>
>> Kevin Yu
>> =======
>> "This posting is provided "AS IS" with no warranties, and confers no
>> rights."
>>
>>

[David Thielen]

Yes - thank you.

I didn't see it for XPathDocument because the Stream ctor doesn't have that
option. But I can use the Stream to create an XmlDocument, Load it with the
Stream, then pass an XmlNodeReader.

--
thanks - dave
"Chris Lovett" wrote:

XPathDocument (and XmlDocument) default to preserveWhitesp ace=false for
backward compatibility reasons.

But you can tell both of these to preservice whitespace as follows:

new XPathDocument(@ "..\\..\\xmlfil e1.xml", XmlSpace.Preser ve);

and
XmlDocument xdoc = new XmlDocument();
xdoc.PreserveWh itespace = true;
"David Thielen" <th*****@nospam .nospam> wrote in message
news:8F******** *************** ***********@mic rosoft.com...

Hello;

First off, thank you for answering. Getting a definite no helps as then I
know that I'm not missing something.

Most cases I am passed a Stream so I can call new XmlDocument(Str eam)
instead of new XPathDocument(S tream). But all of the documentation I have
read says that XPathDocument is a lot faster for heavy xpath use - so do I
then lose that efficiency?

And out of curiosity, why does XPathDocument eat all of the whitespace?
Because xml schemes like Excel's SpreadsheetML need it.

--
thanks - dave
"Chris Lovett" wrote:

I'm on the .net xml team and I know for sure that once you've loaded an
XmlDocument without preserveWhitesp ace, you have lost all insignificant
whitespace information and there is no way for the XPathNavigator to
"reinvent" it on the fly. Therefore you'll have to tell folks who are
calling you not to do that. Or you chould change your component design
so
that they call you to load the XML that way you can be in control of how
the
whitespace processing happens.

"David Thielen" <th*****@nospam .nospam> wrote in message
news:71******** *************** ***********@mic rosoft.com...
> Hi;
>
> It's not my xml. I have a library that other people call and pass me
> their
> xml. I wrote all of my code using XPathDocument & XPathNavigator
> because
> it
> is the "suggested" approach.
>
> But I need to have whitespace preserved. There must be a way as
> Microsoft
> suggests using this approach and not using XmlDocument at all. Could
> you
> please ask the .net team? I find it hard to believe they would not have
> made
> it possible to do this.
>
> --
> thanks - dave
>
>
> "Kevin Yu [MSFT]" wrote:
>
>> Hi dave,
>>
>> There is no way to preserve whitespace in the code directly with
>> XPathNavigator. You can try to do the following:
>>
>> 1. Add whiteSpace="pre serve" in the tag. <space whiteSpace="pre serve">
>> </space>
>> 2. If the node is a whitespace, check the XPathNavigator. NodeType
>> property,
>> it has to be XPathNodeType.S ignificantWhite space or
>> XPathNodeType.W hitespace.
>>
>> Kevin Yu
>> =======
>> "This posting is provided "AS IS" with no warranties, and confers no
>> rights."
>>
>>

[=?Utf-8?B?Q2hyaXN0aWFuIEw=?=]

Hi there,

I have the same issue, but even if I use XmlDocument and set the
..PreserveWhite space to true, whe I deserialize the xml, this node comes with
null value.

Christian Llanos
"David Thielen" wrote:

Yes - thank you.

I didn't see it for XPathDocument because the Stream ctor doesn't have that
option. But I can use the Stream to create an XmlDocument, Load it with the
Stream, then pass an XmlNodeReader.

--
thanks - dave
"Chris Lovett" wrote:

XPathDocument (and XmlDocument) default to preserveWhitesp ace=false for
backward compatibility reasons.

But you can tell both of these to preservice whitespace as follows:

new XPathDocument(@ "..\\..\\xmlfil e1.xml", XmlSpace.Preser ve);

and
XmlDocument xdoc = new XmlDocument();
xdoc.PreserveWh itespace = true;
"David Thielen" <th*****@nospam .nospamwrote in message
news:8F******** *************** ***********@mic rosoft.com...

Hello;
>
First off, thank you for answering. Getting a definite no helps as then I
know that I'm not missing something.
>
Most cases I am passed a Stream so I can call new XmlDocument(Str eam)
instead of new XPathDocument(S tream). But all of the documentation I have
read says that XPathDocument is a lot faster for heavy xpath use - so do I
then lose that efficiency?
>
And out of curiosity, why does XPathDocument eat all of the whitespace?
Because xml schemes like Excel's SpreadsheetML need it.
>
--
thanks - dave
>
>
"Chris Lovett" wrote:
>
>I'm on the .net xml team and I know for sure that once you've loaded an
>XmlDocument without preserveWhitesp ace, you have lost all insignificant
>whitespace information and there is no way for the XPathNavigator to
>"reinvent" it on the fly. Therefore you'll have to tell folks who are
>calling you not to do that. Or you chould change your component design
>so
>that they call you to load the XML that way you can be in control of how
>the
>whitespace processing happens.
>>
>"David Thielen" <th*****@nospam .nospamwrote in message
>news:71******* *************** ************@mi crosoft.com...
Hi;
>
It's not my xml. I have a library that other people call and pass me
their
xml. I wrote all of my code using XPathDocument & XPathNavigator
because
it
is the "suggested" approach.
>
But I need to have whitespace preserved. There must be a way as
Microsoft
suggests using this approach and not using XmlDocument at all. Could
you
please ask the .net team? I find it hard to believe they would not have
made
it possible to do this.
>
--
thanks - dave
>
>
"Kevin Yu [MSFT]" wrote:
>
>Hi dave,
>>
>There is no way to preserve whitespace in the code directly with
>XPathNavigator . You can try to do the following:
>>
>1. Add whiteSpace="pre serve" in the tag. <space whiteSpace="pre serve">
></space>
>2. If the node is a whitespace, check the XPathNavigator. NodeType
>property,
>it has to be XPathNodeType.S ignificantWhite space or
>XPathNodeType. Whitespace.
>>
>Kevin Yu
>=======
>"This posting is provided "AS IS" with no warranties, and confers no
>rights."
>>
>>
>>
>>
>>