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C# and WebDAV

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This message was discovered on ASPFriends.com 'aspngxml' list.

Sidney Buss

Hello,

I'm having some problems with WebDav and XML. I couldn't get the
same result
with DOM and Sytem.XML . When I tried with System.XML, I got this
message:
System.Xml.Xsl.XsltException: Prefix 'a' is not defined.
but when I tried with DOM it works.

Here is the code in C#:
string xml = "<?xml version=\"1.0\"?>";
xml += "<a:multistatus
xmlns:b=\"urn:uuid:c2f41010-65b3-11d1-a29f-00aa00c14882/\"
xmlns:c=\"xml:\" xmlns:d=\"urn:schemas-microsoft-com:office:office\"
xmlns:a=\"DAV:\"> ";
xml +"<a:response><a:href>http://tatsrvdev00/public/removame/lolopaquito.eml<
/a:href>";
xml += "<a:propstat>";
xml += "<a:status>HTTP/1.1 200 OK</a:status>";
xml += "<a:prop> ";
xml += " <a:contentclass>TEST:MyTest</a:contentclass> ";
xml += " </a:prop>";
xml += " </a:propstat>";
xml += " </a:response></a:multistatus>";

XmlDataDocument xdoc = new XmlDataDocument();

NameTable nt = new NameTable();
String name = nt.Add("//a:contentclass");
//
// Using System.XML
XmlNamespaceManager mngr = new XmlNamespaceManager(nt);
xdoc.LoadXml(xml);

XmlNode nod = xdoc.SelectSingleNode("//a:contentclass", mngr );
Response.Write(nod.ToString());

// With DOM
MSXML2.DOMDocumentClass domDoc = new MSXML2.DOMDocumentClass();
domDoc.loadXML(xml);

MSXML2.IXMLDOMNode xnode = domDoc.selectSingleNode("//a:contentclass");
Response.Write(xnode.text );

Is there other way to do this ?

Thanks,

Sidney

Reply to this message...

Dan Wahlin

When using the XmlNamespaceManager you need to call the AddNamespace
method if you want to include a local (or default) namespace in an XPath
statement:

ns.AddNamespace("a","DAV");

You'll find an example of using a local and default namespace with
SelectSingleNode() at the following URL:

http://www.xmlforasp.net/codeSection.aspx?csID=7" target="_blank">http://www.xmlforasp.net/codeSection.aspx?csID=7

Also, you'll see much better performance when working with large strings
by using the StringBuilder class located within the System.Text
namespace rather than doing string concatenations. It's really easy to
use and you won't have to change your code much:

StringBuilder sb = new StringBuilder();

sb.Append("<?xml version=\"1.0\"?>");

sb.Append("<a:multistatus
xmlns:b=\"urn:uuid:c2f41010-65b3-11d1-a29f-00aa00c14882/\");
sb.Append("xmlns:c=\"xml:\"
xmlns:d=\"urn:schemas-microsoft-com:office:office\" xmlns:a=\"DAV:\">
");

//Continue appending to the StringBuilder

To get the string just call sb.ToString();

HTH,

Dan Wahlin

Wahlin Consulting LLC

Microsoft MVP - ASP.NET

http://www.XMLforASP.Net <http://www.xmlforasp.net/> : #1 ASP.NET XML
Resource

XML
<http://www.amazon.com/exec/obidos/ASIN/0672320398/ref=ase_xmlforaspnetd
-20/104-7101530-2681531> for ASP.NET Developers by Dan Wahlin in
bookstores everywhere!

-----Original Message-----
From: Sidney Buss [mailto:Click here to reveal e-mail address]
Sent: Thursday, July 11, 2002 1:55 PM
To: aspngxml
Subject: [aspngxml] C# and WebDAV

Hello,

I'm having some problems with WebDav and XML. I couldn't get the
same result

with DOM and Sytem.XML . When I tried with System.XML, I got this
message:

System.Xml.Xsl.XsltException: Prefix 'a' is not defined.

but when I tried with DOM it works.

Here is the code in C#:

string xml = "<?xml version=\"1.0\"?>";

xml += "<a:multistatus
xmlns:b=\"urn:uuid:c2f41010-65b3-11d1-a29f-00aa00c14882/\"
xmlns:c=\"xml:\" xmlns:d=\"urn:schemas-microsoft-com:office:office\"
xmlns:a=\"DAV:\"> ";

xml +"<a:response><a:href>http://tatsrvdev00/public/removame/lolopaquito.eml<
/a:href>";

xml += "<a:propstat>";

xml += "<a:status>HTTP/1.1 200 OK</a:status>";

xml += "<a:prop> ";

xml += " <a:contentclass>TEST:MyTest</a:contentclass> ";

xml += " </a:prop>";

xml += " </a:propstat>";

xml += " </a:response></a:multistatus>";

XmlDataDocument xdoc = new XmlDataDocument();

NameTable nt = new NameTable();

String name = nt.Add("//a:contentclass");

//

// Using System.XML

XmlNamespaceManager mngr = new XmlNamespaceManager(nt);

xdoc.LoadXml(xml);

XmlNode nod = xdoc.SelectSingleNode("//a:contentclass", mngr );

Response.Write(nod.ToString());

// With DOM

MSXML2.DOMDocumentClass domDoc = new MSXML2.DOMDocumentClass();

domDoc.loadXML(xml);

MSXML2.IXMLDOMNode xnode = domDoc.selectSingleNode("//a:contentclass");

Response.Write(xnode.text );

Is there other way to do this ?

Thanks,

Sidney

| [aspngxml] member Click here to reveal e-mail address = YOUR ID
| http://www.asplists.com/asplists/aspngxml.asp = JOIN/QUIT
| http://www.asplists.com/search = SEARCH Archives

Reply to this message...

Sidney Buss

Thanks, I have changed and it works OK.

-----Original Message-----
From: Dan Wahlin [mailto:Click here to reveal e-mail address]
Sent: sexta-feira, 12 de julho de 2002 02:16
To: aspngxml
Subject: [aspngxml] RE: C# and WebDAV

When using the XmlNamespaceManager you need to call the AddNamespace
method if you want to include a local (or default) namespace in an XPath
statement:

ns.AddNamespace("a","DAV");

You'll find an example of using a local and default namespace with
SelectSingleNode() at the following URL:

http://www.xmlforasp.net/codeSection.aspx?csID=7" target="_blank">http://www.xmlforasp.net/codeSection.aspx?csID=7

Also, you'll see much better performance when working with large strings
by using the StringBuilder class located within the System.Text
namespace rather than doing string concatenations. It's really easy to
use and you won't have to change your code much:

StringBuilder sb = new StringBuilder();
sb.Append("<?xml version=\"1.0\"?>");
sb.Append("<a:multistatus
xmlns:b=\"urn:uuid:c2f41010-65b3-11d1-a29f-00aa00c14882/\");
sb.Append("xmlns:c=\"xml:\"
xmlns:d=\"urn:schemas-microsoft-com:office:office\" xmlns:a=\"DAV:\">
");
//Continue appending to the StringBuilder

To get the string just call sb.ToString();

HTH,
Dan Wahlin

Wahlin Consulting LLC
Microsoft MVP - ASP.NET
http://www.XMLforASP.Net <http://www.xmlforasp.net/> : #1 ASP.NET XML
Resource
XML for ASP.NET Developers
<http://www.amazon.com/exec/obidos/ASIN/0672320398/ref=ase_xmlforaspnetd
-20/104-7101530-2681531> by Dan Wahlin in bookstores everywhere!

-----Original Message-----
From: Sidney Buss [mailto:Click here to reveal e-mail address]
Sent: Thursday, July 11, 2002 1:55 PM
To: aspngxml
Subject: [aspngxml] C# and WebDAV

Hello,

I'm having some problems with WebDav and XML. I couldn't get the
same result
with DOM and Sytem.XML . When I tried with System.XML, I got this
message:
System.Xml.Xsl.XsltException: Prefix 'a' is not defined.
but when I tried with DOM it works.

Here is the code in C#:
string xml = "<?xml version=\"1.0\"?>";
xml += "<a:multistatus
xmlns:b=\"urn:uuid:c2f41010-65b3-11d1-a29f-00aa00c14882/\"
xmlns:c=\"xml:\" xmlns:d=\"urn:schemas-microsoft-com:office:office\"
xmlns:a=\"DAV:\"> ";
xml +"<a:response><a:href>http://tatsrvdev00/public/removame/lolopaquito.eml<
/a:href>";
xml += "<a:propstat>";
xml += "<a:status>HTTP/1.1 200 OK</a:status>";
xml += "<a:prop> ";
xml += " <a:contentclass>TEST:MyTest</a:contentclass> ";
xml += " </a:prop>";
xml += " </a:propstat>";
xml += " </a:response></a:multistatus>";

XmlDataDocument xdoc = new XmlDataDocument();

NameTable nt = new NameTable();
String name = nt.Add("//a:contentclass");
//
// Using System.XML
XmlNamespaceManager mngr = new XmlNamespaceManager(nt);
xdoc.LoadXml(xml);

XmlNode nod = xdoc.SelectSingleNode("//a:contentclass", mngr );
Response.Write(nod.ToString());

// With DOM
MSXML2.DOMDocumentClass domDoc = new MSXML2.DOMDocumentClass();
domDoc.loadXML(xml);

MSXML2.IXMLDOMNode xnode = domDoc.selectSingleNode("//a:contentclass");
Response.Write(xnode.text );

Is there other way to do this ?

Thanks,

Sidney
| [aspngxml] member Click here to reveal e-mail address = YOUR ID
| http://www.asplists.com/asplists/aspngxml.asp = JOIN/QUIT
| http://www.asplists.com/search = SEARCH Archives
| [aspngxml] member Click here to reveal e-mail address = YOUR ID
| http://www.asplists.com/asplists/aspngxml.asp = JOIN/QUIT
| http://www.asplists.com/search = SEARCH Archives

Reply to this message...

	System.Text.StringBuilder
	System.Xml.NameTable
	System.Xml.XmlDataDocument
	System.Xml.XmlNamespaceManager
	System.Xml.XmlNode
	System.Xml.Xsl.XsltException

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