Change existing element in XML file

[yhlove@gmail.com]

Hi

I'm trying to change element in xml file as described below:

the xml file:
----------------

<MyProg>
<Path>test1</Path>
</MyProg>

I want to change the element Path to test2 instead of test1
How can I do that ? Is there a function which gets full xml path and
new value and change the element in this path?

Thanks
yhlove

[rowe_newsgroups]

Re: Change existing element in XML file

On May 7, 10:29 am, yhl...@gmail.co m wrote:

Hi
>
I'm trying to change element in xml file as described below:
>
the xml file:
----------------
>
<MyProg>
<Path>test1</Path>
</MyProg>
>
I want to change the element Path to test2 instead of test1
How can I do that ? Is there a function which gets full xml path and
new value and change the element in this path?
>
Thanks
yhlove

I believe you need to store the element into an XmlNode object and
then change it's innertext property. You can "grab" the node by using
an XmlDocument's GetElementByTag Name method.

Thanks,

Seth Rowe

[Martin Honnen]

Re: Change existing element in XML file

yhlove@gmail.co m wrote:

<MyProg>
<Path>test1</Path>
</MyProg>
>
I want to change the element Path to test2 instead of test1
How can I do that ? Is there a function which gets full xml path and
new value and change the element in this path?

Dim XmlDoc As XmlDocument = New XmlDocument()
XmlDoc.Load("fi le.xml")
XmlDoc.Document Element("Path") .InnerText = "test2"
XmlDoc.Save("fi le.xml")

In general to find nodes you can also use XPath and the methods
SelectNodes and SelectSingleNod e.

--

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

[yhlove@gmail.com]

Re: Change existing element in XML file

On May 7, 5:46 pm, rowe_newsgroups <rowe_em...@yah oo.comwrote:

On May 7, 10:29 am, yhl...@gmail.co m wrote:
>
>
>

Hi

>

I'm trying to change element in xml file as described below:

>

the xml file:
----------------

>

<MyProg>
<Path>test1</Path>
</MyProg>

>

I want to change the element Path to test2 instead of test1
How can I do that ? Is there a function which gets full xml path and
new value and change the element in this path?

>

Thanks
yhlove

>
I believe you need to store the element into an XmlNode object and
then change it's innertext property. You can "grab" the node by using
an XmlDocument's GetElementByTag Name method.
>
Thanks,
>
Seth Rowe

Hi

Could u please write me example code.
How can store XmlNode to the xml file ? which function to that?

Thanks

[yhlove@gmail.com]

Re: Change existing element in XML file

On May 7, 5:59 pm, Martin Honnen <mahotr...@yaho o.dewrote:

yhl...@gmail.co m wrote:

<MyProg>
<Path>test1</Path>
</MyProg>

>

I want to change the element Path to test2 instead of test1
How can I do that ? Is there a function which gets full xml path and
new value and change the element in this path?

>
Dim XmlDoc As XmlDocument = New XmlDocument()
XmlDoc.Load("fi le.xml")
XmlDoc.Document Element("Path") .InnerText = "test2"
XmlDoc.Save("fi le.xml")
>
In general to find nodes you can also use XPath and the methods
SelectNodes and SelectSingleNod e.
>
--
>
Martin Honnen --- MVP XML
http://JavaScript.FAQTs.com/

Hi

It's work! Thanks a lot.

Another problem:
if the xml is look like that:
<MyFile>
<elem1>
<elem2>test1</elem2>
</elem1>
</MyFile>

and I want to change the element elem2 which is son of elem1. How can
I do that?
I tried to do it in that way but it didn't work:
XmlDoc.Document Element("elem2" ).InnerText = "test2"
or
XmlDoc.Document Element("elem1/elem2").InnerTe xt = "test2"

Thanks

[Martin Honnen]

Re: Change existing element in XML file

yhlove@gmail.co m wrote:

if the xml is look like that:
<MyFile>
<elem1>
<elem2>test1</elem2>
</elem1>
</MyFile>
>
and I want to change the element elem2 which is son of elem1. How can
I do that?
I tried to do it in that way but it didn't work:
XmlDoc.Document Element("elem2" ).InnerText = "test2"

You can only find child nodes with the index syntax so you would need
XmlDoc.Document Element("elem1" )("elem2").Inne rText = "test2"
or, if you want to use XPath expressions then you need to use
SelectSingleNod e

XmlDoc.Document Element("elem1/elem2").InnerTe xt = "test2"

XmlDoc.Document Element.SelectS ingleNode("elem 1/elem2").InnerTe xt =
"test2"


--

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