xml parser newbie

[gigs]

i need to make parser to go trough node tree

i have this structure
<root>
<bookstore pass="1">
<book>
<name id="1">programm ing xml</name>
</book>
<book>
<name id="2">programm ing C#</name>
</book>
</bookstore>
</root>
which is not same all the time. sometimes it have more element in book and
sometimes is deeper like this.
this is just example xml
<root>
<bookstore pass="1">
<book>
<katalog num="1">
<name id="1">programm ing xml</name>
</katalog>
</book>
<book>
<name id="2">programm ing C#</name>
</book>
</bookstore>
</root>

i have 3 xml files
first xml where i read data and if i have attribute in bookstore i go and check
for name attribute. i took it and than i go to bookstore tag with same
attribute in second xml. and i need to write all elements in bookstore to third
xml (same structure), but i need to change name tag innertext with text from
first xml.

i was thinking

public void ParseNodeTree(s tring id, string path, XPathNavigator nav,
XmlTextWriter writer)
{
XPathNodeIterat or iter = nav.Select(path );

while (iter.MoveNext( ))
{
if (iter.Current.G etAttribute("id ", "") == id)
{
//change this node text with text from first file
}

writer.WriteSta rtElement(iter. Current.Name);

if (iter.Current.H asChildren)
{
//dont know how to get children path to put it in recursion
ParseNodeTree(i d, path, nav, writer);
}
else
{
writer.WriteFul lEndElement();
}
}
}


can someone please help me. i lost 2 days for this
i cant do it anymore


thanks!

[Daniel Cigic]

Re: xml parser newbie

Maybe this would help you at least to move to the right direction:

if (iter.Current.H asChildren)
{
//dont know how to get children path to put it in recursion
XPathNavigator nodesNavigator = nodes.Current;
XPathNodeIterat or nodes =
nodesNavigator. SelectChildren( "katalog", "");
//or check other SelectChildren overloaded method

while (nodes.MoveNext ())
// extract infos that you need from nodes.Current
ParseNodeTree(i d, path, nav, writer);
}




"gigs" <gigs@hi.t-com.hrwrote in message
news:g1ph1l$cm0 $1@ss408.t-com.hr...

i need to make parser to go trough node tree
>
i have this structure
<root>
<bookstore pass="1">
<book>
<name id="1">programm ing xml</name>
</book>
<book>
<name id="2">programm ing C#</name>
</book>
</bookstore>
</root>
which is not same all the time. sometimes it have more element in book and
sometimes is deeper like this.
this is just example xml
<root>
<bookstore pass="1">
<book>
<katalog num="1">
<name id="1">programm ing xml</name>
</katalog>
</book>
<book>
<name id="2">programm ing C#</name>
</book>
</bookstore>
</root>
>
i have 3 xml files
first xml where i read data and if i have attribute in bookstore i go and
check for name attribute. i took it and than i go to bookstore tag with
same attribute in second xml. and i need to write all elements in
bookstore to third xml (same structure), but i need to change name tag
innertext with text from first xml.
>
i was thinking
>
public void ParseNodeTree(s tring id, string path, XPathNavigator nav,
XmlTextWriter writer)
{
XPathNodeIterat or iter = nav.Select(path );
>
while (iter.MoveNext( ))
{
if (iter.Current.G etAttribute("id ", "") == id)
{
//change this node text with text from first file
}
>
writer.WriteSta rtElement(iter. Current.Name);
>
if (iter.Current.H asChildren)
{
//dont know how to get children path to put it in recursion
ParseNodeTree(i d, path, nav, writer);
}
else
{
writer.WriteFul lEndElement();
}
}
}
>
>
can someone please help me. i lost 2 days for this
i cant do it anymore
>
>
thanks!

[gigs]

Re: xml parser newbie

thanks,

i need to check if current node have children, and than get names of that
children because they are different. can i somehow get node child names to put
in nodesNavigator. SelectChildren.

Daniel Cigic wrote:

Maybe this would help you at least to move to the right direction:
>
if (iter.Current.H asChildren)
{
//dont know how to get children path to put it in recursion
XPathNavigator nodesNavigator = nodes.Current;
XPathNodeIterat or nodes =
nodesNavigator. SelectChildren( "katalog", "");
//or check other SelectChildren overloaded method
>
while (nodes.MoveNext ())
// extract infos that you need from nodes.Current
ParseNodeTree(i d, path, nav, writer);
}
>
>
>
>
"gigs" <gigs@hi.t-com.hrwrote in message
news:g1ph1l$cm0 $1@ss408.t-com.hr...

[Leon Lambert]

Re: xml parser newbie

If this exercise is purely academic please ignore this response.

There is a much easier way to deal with XML in .Net. Just make sure you
have a schema (.xsd) file that defines your formating. This should
include all the optional elements you talked about. Then use the .Net
xsd.exe tool to convert the schema into a source file for a strongly
typed dataset. You can then use that file in you project to handle the
xml data. This greatly simplifies the data handling and also give you
some release immunity. For example a bunch of XML methods were
deprecated between .net 1.1 and 2.0 which gave off a lot of warnings. I
had no issues like this when using xsd.exe tool. Of course if this is an
academic problem for learning purposes you can just ignore this advice.

Hope this helps.
Leon Lambert



gigs wrote:

i need to make parser to go trough node tree
>
i have this structure
<root>
<bookstore pass="1">
<book>
<name id="1">programm ing xml</name>
</book>
<book>
<name id="2">programm ing C#</name>
</book>
</bookstore>
</root>
which is not same all the time. sometimes it have more element in book
and sometimes is deeper like this.
this is just example xml
<root>
<bookstore pass="1">
<book>
<katalog num="1">
<name id="1">programm ing xml</name>
</katalog>
</book>
<book>
<name id="2">programm ing C#</name>
</book>
</bookstore>
</root>
>
i have 3 xml files
first xml where i read data and if i have attribute in bookstore i go
and check for name attribute. i took it and than i go to bookstore tag
with same attribute in second xml. and i need to write all elements in
bookstore to third xml (same structure), but i need to change name tag
innertext with text from first xml.
>
i was thinking
>
public void ParseNodeTree(s tring id, string path, XPathNavigator nav,
XmlTextWriter writer)
{
XPathNodeIterat or iter = nav.Select(path );
>
while (iter.MoveNext( ))
{
if (iter.Current.G etAttribute("id ", "") == id)
{
//change this node text with text from first file
}
>
writer.WriteSta rtElement(iter. Current.Name);
>
if (iter.Current.H asChildren)
{
//dont know how to get children path to put it in recursion
ParseNodeTree(i d, path, nav, writer);
}
else
{
writer.WriteFul lEndElement();
}
}
}
>
>
can someone please help me. i lost 2 days for this
i cant do it anymore
>
>
thanks!