In this article, i'll show you how to create and update an XML file in C#. Hope this help!
Example.xml
Example.xml
Create an XML file
Let's start by creating a new XML file. To do this, we'll use XmlTextWriter. Open your Main function and copy the code below:static void Main(string[] args) { // create a new file string path = "E:\\Example.xml"; XmlTextWriter writer = new XmlTextWriter(path, System.Text.Encoding.UTF8); // set output's view format writer.Formatting = Formatting.Indented; // write XML declaration writer.WriteStartDocument(true); // compose XML content writer.WriteStartElement("inventory"); writer.WriteAttributeString("category", "vehicle"); writer.WriteStartElement("item"); writer.WriteAttributeString("id","p1"); writer.WriteString("Car"); writer.WriteEndElement(); writer.WriteStartElement("item"); writer.WriteAttributeString("id", "p2"); writer.WriteString("Bicycle"); writer.WriteEndElement(); writer.WriteEndElement(); // close session writer.Close(); }Result
Example.xml
<?xml version="1.0" encoding="utf-8" standalone="yes" ?> <inventory category="vehicle"> <item id="p1">Car</item> <item id="p2">Bicycle</item> </inventory>
Update an XML file
Now that we have created a simple XML file using XmlTextWriter. Next, let's modify it by XDocument. See the code below:static void Main(string[] args){ string path = "E:\\Example.xml"; try { XDocument doc = XDocument.Load(path); XElement res = doc.Element("inventory"); // remove last item res.LastNode.Remove(); // new item XElement item = new XElement("item", "Motobike"); XAttribute att = new XAttribute("id", "p3"); item.Add(att); // add to inventory res.Add(item); // save file doc.Save(path); } catch (Exception e){ throw e; // file not found } }Result
Example.xml
<?xml version="1.0" encoding="utf-8" standalone="yes" ?> <inventory category="vehicle"> <item id="p1">Car</item> <item id="p3">Motobike</item> </inventory>
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