Change Element content in XML file

Question

I got below XML in file "test.xml"

<MainDoc version="1.0" application="App2">
  <property name="AutoHiddenPanelCaptionShowMode">ShowForAllPanels</property>
  <property name="DockingOptions" isnull="true" iskey="true">
    <property name="DockPanelInTabContainerTabRegion">DockImmediately</property>
  </property>
  <property name="Panels" iskey="true" value="4">
    <property name="Item1" isnull="true" iskey="true">
      <property name="Text">ContainerABC</property>
      <property name="Options" isnull="true" iskey="true">
        <property name="AllowFloating">true</property>
      </property>
    </property>
    <property name="Item2" isnull="true" iskey="true">
      <property name="Text">ContainerXYZ</property>
    </property>
    <property name="Item3" isnull="true" iskey="true">
      <property name="Text">Container123</property>
    </property>
    <property name="Item4" isnull="true" iskey="true">
      <property name="Text">panelContainer1</property>
    </property>
  </property>
</MainDoc>

I want to change element content where it says "panelContainer1" to "Container456" above. How can I do that. I tried below but not sure how to get to that content and change it.

using System.Xml.Linq;

private void button1_Click(object sender, EventArgs e)
        {
            string xmlPath = @"C:\Downloads\test.xml";
            XDocument doc = XDocument.Load(xmlPath);
            var items = from item in doc.Descendants("property")
                        where item.Attribute("name").Value == "Item4"
                        select item;
            foreach (XElement itemElement in items)
            {
                //something here ?
            }
        }

itemElement.Value = "Container456";?

Jon Skeet
– Jon Skeet

2021-08-03 14:18:29 +00:00
Commented Aug 3, 2021 at 14:18 — Jon Skeet
– Jon Skeet, Commented Aug 3, 2021 at 14:18

Krishna Varma · Accepted Answer · 2021-08-04 09:30:20Z

1

Everything is looking good. and what you need is itemElement.Value

XDocument doc = XDocument.Load(xmlPath);
var items = doc.Root.Descendants("property")
                    .Where(x => x.Attribute("name").Value == "Item4")
                    .Descendants()
                    .Where(x=> x.Attribute("name").Value == "Text");

foreach(var itemElement in items)
{
    itemElement.Value = "Container456";
}

doc.Save(xmlPath);

edited Aug 4, 2021 at 9:30

answered Aug 3, 2021 at 14:53

Krishna Varma

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5 Comments

kami Over a year ago

Thanks Krishna, this is good. But what if there are more elements like <property name="Text">panelContainer1</property> and also property name="Visibility">Visible</property> then how to filter only to get "panelContainer1"?

Krishna Varma Over a year ago

@kami, I have updated my post to address the scenario. Please check

kami Over a year ago

This is good. Many thanks. Only last thing that this change is not being made to "test.xml" file. How that can be done?

Krishna Varma Over a year ago

@kami, please check the updated post. you just need doc.save

kami Over a year ago

Simple and great. Thanks again @Krishna

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