Appending new tag and attribute values to the existing xml file through code behind

Hi Zoran,this following code is working for appending to existing xml file:

Dim xmldoc As New XmlDocument Strpath = AppDomain.CurrentDomain.BaseDirectory & "data.xml" xmldoc.Load(Strpath)
Dim xmlel As XmlElement xmlel = xmldoc.CreateElement("Name") xmlel.InnerText = "David" xmldoc.DocumentElement.AppendChild(xmlel)
xmlel = Nothing
xmlel = xmldoc.CreateElement("Address")
xmlel.InnerText = "#34,street"
xmldoc.DocumentElement.AppendChild(xmlel)
xmlel = xmldoc.CreateElement("PhoneNumber")
xmlel.InnerText = "8979"
xmldoc.DocumentElement.AppendChild(xmlel)
xmlel = Nothing
xmlel = xmldoc.CreateElement("Email")
xmlel.InnerText = "gfhg.com"
xmldoc.DocumentElement.AppendChild(xmlel)
xmlel = Nothing
xmldoc.Save(Strpath)

thanks for ur kind response.

That's a bit strange, if both xmlnode and xmleleattr are non-null and you get null reference exception on that line...

Can you paste the complete exception text here?

Zoran

Did you try executing the code further from that line and did it throw exception again?

Zoran

What did you try to do with that line after all:
Dim xmlnode As XElement = doc.(0)

That will try to execute physical path as XPath, which probably has nothing to do with XML document's contents. That's why xmlnode remains null (Nothing) and consequently you have object reference not set to an instance of an object.

Zoran

i checked it,xmlnode contains :
 Rahul #34,Street 97867687 [email protected] Mikel #45,addresstest 987678 [email protected].

xmlnode is null, which means that Dim xmlnode As XElement = doc. returned zero nodes. Check contents of the document and of Strpath.

Zoran