How to write/ read/ modify array to XML file?

Question

I have an array which its structure is:

<data>
<id></id>
<list></list>
</data>

And I want to write an array to list node

<data>
<id></id>
<list>
    <item>1</item>
    <item>2</item>
    <item>3</item>
    <item>4</item>
</list>
</data>

Then, delete an element in that array:

<data>
<id></id>
<list>
    <item>1</item>
    <item>3</item>
    <item>4</item>
</list>
</data>

Next, modify that array:

<data>
<id></id>
<list>
    <item>1</item>
    <item>2</item>
    <item>3</item>
</list>
</data>

How to write / read/ modify an array which inside the xml array?

Any ideas?

@Damith I read it as a text file. Split it by <list> first, then remove </list>. Second, get all data in <item> node by using split and convert it to list. — MRWonderFuXker
– MRWonderFuXker, Commented Nov 14, 2016 at 8:12
@cansik What I have to do with your suggested answer? var page = xdoc.Descendants("data"); if (page != null) { page.Element("list") .Add(new XElement("item", 4 )); xdoc.Save("Test.xml"); } — MRWonderFuXker
– MRWonderFuXker, Commented Nov 14, 2016 at 8:17
@MRfuxkYou It's about editing an xml file with C#. You did not ask a concrete question, so learn first to work with xml files and then ask a specific question if you have one. — cansik
– cansik, Commented Nov 14, 2016 at 8:23

Manfred Radlwimmer · Accepted Answer · 2016-11-14 08:58:30Z

2

To read:

XDocument doc = XDocument.Load("data.xml");
var listPath = from elements in doc.Elements("data").Elements("list") select elements;

foreach (var docItem in listPath)
{
 var itemVar= Convert.ToInt32(doc .Element("item").Value);               
}

To write:

XDocument doc = XDocument.Load("data.xml");
var list = doc.Root.Element("list");
list.Add(new XElement("item", value));

To edit:

XDocument doc = XDocument.Load("data.xml");
var list = doc.Root.Element("list");
list.Element("item").Value = newValue;

any powerful and faster solution?

edited Nov 14, 2016 at 8:58

Manfred Radlwimmer

13.4k13 gold badges55 silver badges65 bronze badges

answered Nov 14, 2016 at 8:55

MRWonderFuXker

2034 silver badges19 bronze badges

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1 Comment

MRWonderFuXker Over a year ago

Hey, does anyone know how to delete all item in list?

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