C# create simple xml file [closed]

Question

How can I create a simple xml file and store it in my system?

Answer 1

You could use XDocument:

new XDocument(     new XElement("root",          new XElement("someNode", "someValue")         ) ) .Save("foo.xml"); 

If the file you want to create is very big and cannot fit into memory you might use XmlWriter.

Answer 2

I'd recommend serialization,

public class Person {       public  string FirstName;       public  string MI;       public  string LastName; }  static void Serialize() {       clsPerson p = new Person();       p.FirstName = "Jeff";       p.MI = "A";       p.LastName = "Price";       System.Xml.Serialization.XmlSerializer x = new System.Xml.Serialization.XmlSerializer(p.GetType());       x.Serialize(System.Console.Out, p);       System.Console.WriteLine();       System.Console.WriteLine(" --- Press any key to continue --- ");       System.Console.ReadKey(); } 

You can further control serialization with attributes.
But if it is simple, you could use XmlDocument:

using System; using System.Xml;  public class GenerateXml {     private static void Main() {         XmlDocument doc = new XmlDocument();         XmlNode docNode = doc.CreateXmlDeclaration("1.0", "UTF-8", null);         doc.AppendChild(docNode);          XmlNode productsNode = doc.CreateElement("products");         doc.AppendChild(productsNode);          XmlNode productNode = doc.CreateElement("product");         XmlAttribute productAttribute = doc.CreateAttribute("id");         productAttribute.Value = "01";         productNode.Attributes.Append(productAttribute);         productsNode.AppendChild(productNode);          XmlNode nameNode = doc.CreateElement("Name");         nameNode.AppendChild(doc.CreateTextNode("Java"));         productNode.AppendChild(nameNode);         XmlNode priceNode = doc.CreateElement("Price");         priceNode.AppendChild(doc.CreateTextNode("Free"));         productNode.AppendChild(priceNode);          // Create and add another product node.         productNode = doc.CreateElement("product");         productAttribute = doc.CreateAttribute("id");         productAttribute.Value = "02";         productNode.Attributes.Append(productAttribute);         productsNode.AppendChild(productNode);         nameNode = doc.CreateElement("Name");         nameNode.AppendChild(doc.CreateTextNode("C#"));         productNode.AppendChild(nameNode);         priceNode = doc.CreateElement("Price");         priceNode.AppendChild(doc.CreateTextNode("Free"));         productNode.AppendChild(priceNode);          doc.Save(Console.Out);     } } 

And if it needs to be fast, use XmlWriter:

public static void WriteXML() {     // Create an XmlWriterSettings object with the correct options.     System.Xml.XmlWriterSettings settings = new System.Xml.XmlWriterSettings();     settings.Indent = true;     settings.IndentChars = "    "; //  "\t";     settings.OmitXmlDeclaration = false;     settings.Encoding = System.Text.Encoding.UTF8;      using (System.Xml.XmlWriter writer = System.Xml.XmlWriter.Create("data.xml", settings))     {          writer.WriteStartDocument();         writer.WriteStartElement("books");          for (int i = 0; i < 100; ++i)         {             writer.WriteStartElement("book");             writer.WriteElementString("item", "Book "+ (i+1).ToString());             writer.WriteEndElement();         }          writer.WriteEndElement();          writer.Flush();         writer.Close();     } // End Using writer   } 

And btw, the fastest way to read XML is XmlReader:

public static void ReadXML() {     using (System.Xml.XmlReader xmlReader = System.Xml.XmlReader.Create("http://www.ecb.int/stats/eurofxref/eurofxref-daily.xml"))     {         while (xmlReader.Read())         {             if ((xmlReader.NodeType == System.Xml.XmlNodeType.Element) && (xmlReader.Name == "Cube"))             {                 if (xmlReader.HasAttributes)                     System.Console.WriteLine(xmlReader.GetAttribute("currency") + ": " + xmlReader.GetAttribute("rate"));             }          } // Whend       } // End Using xmlReader      System.Console.ReadKey(); } 

And the most convenient way to read XML is to just deserialize the XML into a class.
This also works for creating the serialization classes, btw.
You can generate the class from XML with Xml2CSharp:
https://xmltocsharp.azurewebsites.net/