C#：
string w3NameSpace = "http://www.w3.org/2000/xmlns/";
System.Xml.XmlDocument doc = new System.Xml.XmlDocument();
//创建根节点
System.Xml.XmlNode root = doc.CreateNode(System.Xml.XmlNodeType.Element, "w", "wordDocument", "http://schemas.microsoft.com/office/word/2003/2/wordml");
System.Xml.XmlAttribute xa;
xa = doc.CreateAttribute("xmlns", "v", w3NameSpace);
xa.Value = "urn:schemas-microsoft-com:vml";
root.Attributes.Append(xa);
//为节点添加属性
xa = doc.CreateAttribute("xmlns", "w10", w3NameSpace);
xa.Value = "urn:schemas-microsoft-com:office:word";
root.Attributes.Append(xa);
xa = doc.CreateAttribute("xmlns", "SL", w3NameSpace);
xa.Value = "http://schemas.microsoft.com/schemaLibrary/2003/2/core";
root.Attributes.Append(xa);
xa = doc.CreateAttribute("xmlns", "aml", w3NameSpace);
xa.Value = "http://schemas.microsoft.com/aml/2001/core";
root.Attributes.Append(xa);
xa = doc.CreateAttribute("xmlns", "wx", w3NameSpace);
xa.Value = "http://schemas.microsoft.com/office/word/2003/2/auxHint";
root.Attributes.Append(xa);
xa = doc.CreateAttribute("xmlns", "o", w3NameSpace);
xa.Value = "urn:schemas-microsoft-com:office:office";
root.Attributes.Append(xa);
xa = doc.CreateAttribute("xmlns", "dt", w3NameSpace);
xa.Value = "uuid:C2F41010-65B3-11d1-A29F-00AA00C14882";
root.Attributes.Append(xa);
xa = doc.CreateAttribute("xmlns", "space", w3NameSpace);
xa.Value = "preserve";
root.Attributes.Append(xa);
//为节点增加值
System.Xml.XmlNode body = doc.CreateNode(System.Xml.XmlNodeType.Element, "v", "body", "urn:schemas-microsoft-com:vml");
System.Xml.XmlNode childNode = doc.CreateNode(System.Xml.XmlNodeType.Element, "o", "t", "urn:schemas-microsoft-com:office:office");
childNode.InnerText = "欢迎光临【孟宪会之精彩世界】";
//添加到内存树中
body.AppendChild(childNode);
root.AppendChild(body);
doc.AppendChild(root);
//添加节点声明
System.Xml.XmlDeclaration xd = doc.CreateXmlDeclaration("1.0", "UTF-8", "yes");
doc.InsertBefore(xd, doc.DocumentElement);
//添加处理指令
System.Xml.XmlProcessingInstruction spi = doc.CreateProcessingInstruction("mso-application", "progid=/"Word.Document/"");
doc.InsertBefore(spi, doc.DocumentElement);
