Problems selecting node

[Tamir Kamara]

Hi,

I have the following xml file which is part of a n-level tree:

<TREENODES>
<TreeNode Text="A1" NodeData="1" NavigateUrl="" ImageUrl="">
<TreeNode Text="A2" NodeData="12" NavigateUrl=""
ImageUrl=""></TreeNode>
<TreeNode Text="A3" NodeData="13" NavigateUrl=""
ImageUrl=""></TreeNode>
<TreeNode Text="A22" NodeData="14" NavigateUrl=""
ImageUrl=""></TreeNode>
</TreeNode>
<TreeNode Text="B53" NodeData="2" NavigateUrl="" ImageUrl="">
<TreeNode Text="B29" NodeData="15" NavigateUrl=""
ImageUrl=""></TreeNode>
</TreeNode>
</TREENODES>

and i'm trying to select all descendants of a node with NodeData=x but i
can't seem to select the parent. (black page)
here the code:

Dim doc As XPathDocument = New
XPathDocument(Server.MapPath("Xml/LocationsTree.xml"))

Dim nav As XPathNavigator = doc.CreateNavigator()

nav.MoveToRoot()

nav.MoveToId("descendant::TREENODES[@NodeData='2']")

Response.Write(nav.GetAttribute("Text", ""))
what am i doing worng ?

[Oleg Tkachenko [MVP]]

Tamir Kamara wrote:

<TREENODES>
<TreeNode Text="A1" NodeData="1" NavigateUrl="" ImageUrl="">
<TreeNode Text="A2" NodeData="12" NavigateUrl=""
ImageUrl=""></TreeNode>
<TreeNode Text="A3" NodeData="13" NavigateUrl=""
ImageUrl=""></TreeNode>
<TreeNode Text="A22" NodeData="14" NavigateUrl=""
ImageUrl=""></TreeNode>
</TreeNode>
<TreeNode Text="B53" NodeData="2" NavigateUrl="" ImageUrl="">
<TreeNode Text="B29" NodeData="15" NavigateUrl=""
ImageUrl=""></TreeNode>
</TreeNode>
</TREENODES>

and i'm trying to select all descendants of a node with NodeData=x but i
can't seem to select the parent. (black page)
here the code:

Dim doc As XPathDocument = New
XPathDocument(Server.MapPath("Xml/LocationsTree.xml"))

Dim nav As XPathNavigator = doc.CreateNavigator()

nav.MoveToRoot()

nav.MoveToId("descendant::TREENODES[@NodeData='2']")

MoveToId method moves XPathNavigator to a node with specified ID.
"descendant::TREENODES[@NodeData='2']" doesn't look like ID.

Try
XPathNodeIterator ni =
nav.Select("/TREENODES/descendant::TreeNode[@NodeData='2']")
etc.
--
Oleg Tkachenko [XML MVP, XmlInsider]
http://blog.tkachenko.com

[Tamir Kamara]

Oleg,

still i don't get any output on the page with this code:
Dim ni As XPathNodeIterator

ni = nav.Select("/TREENODES/descendant::TreeNode[@NodeData='2']")

Response.Write(ni.Current.GetAttribute("Text", ""))

it also returns false on the "ni.Current.HasAttributes" line which i don't
get if ni is on the current node.

more ideas ?

thanks
"Oleg Tkachenko [MVP]" <oleg@NO!SPAM!PLEASEtkachenko.com> wrote in message
news:%2******************@TK2MSFTNGP12.phx.gbl...

Tamir Kamara wrote:

<TREENODES>
<TreeNode Text="A1" NodeData="1" NavigateUrl="" ImageUrl="">
<TreeNode Text="A2" NodeData="12" NavigateUrl=""
ImageUrl=""></TreeNode>
<TreeNode Text="A3" NodeData="13" NavigateUrl=""
ImageUrl=""></TreeNode>
<TreeNode Text="A22" NodeData="14" NavigateUrl=""
ImageUrl=""></TreeNode>
</TreeNode>
<TreeNode Text="B53" NodeData="2" NavigateUrl="" ImageUrl="">
<TreeNode Text="B29" NodeData="15" NavigateUrl=""
ImageUrl=""></TreeNode>
</TreeNode>
</TREENODES>

and i'm trying to select all descendants of a node with NodeData=x but i
can't seem to select the parent. (black page)
here the code:

Dim doc As XPathDocument = New
XPathDocument(Server.MapPath("Xml/LocationsTree.xml"))

Dim nav As XPathNavigator = doc.CreateNavigator()

nav.MoveToRoot()

nav.MoveToId("descendant::TREENODES[@NodeData='2']")

MoveToId method moves XPathNavigator to a node with specified ID.
"descendant::TREENODES[@NodeData='2']" doesn't look like ID.

Try
XPathNodeIterator ni =
nav.Select("/TREENODES/descendant::TreeNode[@NodeData='2']")
etc.
--
Oleg Tkachenko [XML MVP, XmlInsider]
http://blog.tkachenko.com

[Oleg Tkachenko [MVP]]

Tamir Kamara wrote:

still i don't get any output on the page with this code:
Dim ni As XPathNodeIterator

ni = nav.Select("/TREENODES/descendant::TreeNode[@NodeData='2']")

Response.Write(ni.Current.GetAttribute("Text", ""))

You have to move XPathNodeIterator to get next selected node:
ni = nav.Select("/TREENODES/descendant::TreeNode[@NodeData='2']")
while (ni.MoveNext()
Response.Write(ni.Current.GetAttribute("Text", ""))

--
Oleg Tkachenko [XML MVP, XmlInsider]
http://blog.tkachenko.com