Question

I have that xml document :

<?xml version="1.0" encoding="utf-8" ?>

<reminders>
  <reminder>
    <Title>Alarm1</Title>
    <Description>Desc1</Description>
    <Time>03/07/2012 10:11AM</Time>
    <snooze>1</snooze>
    <repeat>None</repeat>
  </reminder>
  <reminder>
    <Title>Alarm2</Title>
    <Description>Desc2</Description>
    <Time>03/07/2012 10:11AM</Time>
    <snooze>15</snooze>
    <repeat>Daily</repeat>
  </reminder>
</reminders>

And say i would like to create a full reminder child like :

  <reminder>
    <Title>NEW-Alarm</Title>
    <Description>New-Desc</Description>
    <Time>03/07/2012 10:11AM</Time>
    <snooze>15</snooze>
    <repeat>Daily</repeat>
  </reminder>

How can i do that in C# ?

And also i`d like to edit some child like from :

<Title>NEW-Alarm</Title>

to be

<Title>Modified-NEW-Alarm</Title>

I am fresh to XML and i really did my best , actually i am opening like 13 webpages for xml but none of them has what i really need, so i`ll truly appreciate your help.

Answer 1

Load the doc with XDocument class

Add a element (edit PATH with your data) :

XElement newEl = new XElement(new XElement("reminder",
                                new XElement("Title", "NEW-Alarm"),
                                new XElement("Description", "New-Desc"),
                                new XElement("Time", "03/07/2012 10:11AM"),
                                new XElement("snooze", "15"),
                                new XElement("repeat", "Daily")));
                    doc.Root.Add(newEl);
                    doc.Save(PATH);

To change, we must first find the element (with LINQ) and then apply the SetValue method.
http://msdn.microsoft.com/en-us/library/system.xml.linq.xelement.setvalue.aspx