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How to change XML Attribute in C#?

To change an XML Attribute in C# we will need to do below steps:

  • 1) we should be using using System.Xml;
  • 2) Define an XmlDocument
  • 3) Load XML file using method Load() defined in XmlDocument.
  • 4) Define an XmlNode Object by using method xmlDoc.SelectSingleNode()
  • 5) Update the value to the node.
  • 6) Save the file using same filename.

Example of change XML Attribute in C#

using System.Xml;

public class Example
{
    public static void Main()
    {
		string xmlFile = @"C:\File_Path";
		string newValue = string.Empty;
		XmlDocument xmlDoc = new XmlDocument();
		xmlDoc.Load(xmlFile);
		XmlNode node = xmlDoc.SelectSingleNode("Root/Node/Element");
		node.Attributes[0].Value = newValue;
		xmlDoc.Save(xmlFile);

    }
}

Conclusion

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