update xml file using linq

Posted by Klbaiju under Regular Expressions on 12/3/2009 | Views : 3651 | Status : [Member] | Replies : 2

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Hi iam trying to update a record in an xml file using linq.
but showing error
error is object reference not set to an instance of an object.
here is the code

XDocument xmlDoc = XDocument.Load(Server.MapPath("people.xml"));
var persons = from person in xmlDoc.Descendants("Person")
where person.Element("id").Value == (TextBox1.Text)
select person;

// persons.Remove();

foreach (XElement person in persons.ToList())
{

person.Element("name").Value = (TextBox2.Text);

}
xmlDoc.Save(Server.MapPath("People.xml"));

Regards
K L BAIJU

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Posted by: Vuyiswamb on: 12/4/2009 [Member] [MVP] [Administrator] NotApplicable

0	Which line are you getting this Error ? Thank you for posting at Dotnetfunda [Administrator] Klbaiju, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: Klbaiju on: 12/4/2009 [Member] Starter

0	Hi i already solved it this is final code error was i wrote ("name") instead of ("Name") ................. XDocument xmlDoc = XDocument.Load(Server.MapPath("people.xml")); var persons = from person in xmlDoc.Descendants("Person") where person.Element("id").Value == (TextBox1.Text) select person; // persons.Remove(); foreach (XElement person in persons.ToList()) { person.Element("Name").Value = TextBox2.Text; // person.SetElementValue("Name",TextBox2.Text); } xmlDoc.Save(Server.MapPath("People.xml")); } Klbaiju, if this helps please login to Mark As Answer. \| Alert Moderator

Hi i already solved it

this is final code
error was i wrote ("name") instead of ("Name")
.................
XDocument xmlDoc = XDocument.Load(Server.MapPath("people.xml"));
var persons = from person in xmlDoc.Descendants("Person")
where person.Element("id").Value == (TextBox1.Text)
select person;

// persons.Remove();

foreach (XElement person in persons.ToList())
{

person.Element("Name").Value = TextBox2.Text;
// person.SetElementValue("Name",TextBox2.Text);

}
xmlDoc.Save(Server.MapPath("People.xml"));

}

Klbaiju, if this helps please login to Mark As Answer. | Alert Moderator

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