.Net Systml.Xml对xml的操作

.xml读取,如果是用DataSet.WriteXML()方法写的XML那么直接用DataSet.ReadXML(filePath)就可以直接读取出来了.
如果是任意的节点文件,我们又不知道xml文件的结构,那么就要用System.XML命名空间下的XmlReader来读取了.
代码如下:

   

 1         XmlReader reader = XmlReader.Create(filename);
 2            DataSet ds = new DataSet();
 3            ds.ReadXml(filename);
 4            XmlWriterSettings ws = new XmlWriterSettings();
 5            ws.Indent = true;
 6            XmlWriter writer = XmlWriter.Create(output, ws);
 7            while (reader.Read())
 8            {
 9                switch (reader.NodeType)
                {
                    case XmlNodeType.Element:
                        writer.WriteString(reader.Name);
                        break;
                    case XmlNodeType.Text:
                        writer.WriteString(reader.Value);
                        break;
                    case XmlNodeType.XmlDeclaration:
                    case XmlNodeType.ProcessingInstruction:
                        writer.WriteProcessingInstruction(reader.Name, reader.Value);
                        break;
                    case XmlNodeType.Comment:
                        writer.WriteComment(reader.Value);
                        break;
                    case XmlNodeType.EndElement:
                        writer.WriteFullEndElement();
                        break;
                }
            }