C#之XML文件操作 一 XMLHelper using System ; using System. Globalization ; using System. IO ; using System. IO. Compression ; using System. Runtime. Serialization. Formatters. Binary ; using System. Text ; using System. Xml ; using System. Xml. Serialization ; namespace Helper { public class XMLHelper { public static XmlNode Create ( string ) { var = new XmlDocument ( ) ; XmlNode node= doc. CreateElement ( nodeName) ; return node; } public static XmlAttribute CreateAttribute ( XmlNode node, string , string value ) { try { XmlDocument doc= node. OwnerDocument; XmlAttribute attr= doc. CreateAttribute ( attributeName) ; attr. Value= value ; node. Attributes. SetNamedItem ( attr) ; return attr; } catch ( Exception err) { string = err. Message; return null ; } } public static XmlNode ObjectToXML ( object ) { var = new XmlDocument ( ) ; if ( config!= null ) { //we need the type to serialize Type t= config. GetType ( ) ; var = new XmlSerializer ( t) ; //will hold the xml using ( var = new StringWriter ( CultureInfo. InvariantCulture) ) { ser. Serialize ( writer, config) ; xnd. LoadXml ( writer. ToString ( ) ) ; writer. Close ( ) ; } } return xnd. DocumentElement; } public static object XMLToObject ( XmlNode node, Type objectType) { object = null ; if ( node!= null ) { using ( var = new StringReader ( node. OuterXml) ) { var = new XmlSerializer ( objectType) ; convertedObject= ser. Deserialize ( reader) ; reader. Close ( ) ; } } return convertedObject; } } public class XmlSerializerHelper { /// <summary> /// 读取XML文件 /// </summary> /// <param name="XmlFilePath"></param> /// <param name="type"></param> /// <returns></returns> public static object ReadXML ( string , Type type) { if ( ! File. Exists ( XmlFilePath) ) { throw new Exception ( $"File { XmlFilePath } not Exists" ) ; } using ( var = new FileStream ( XmlFilePath, FileMode. Open) ) { return new XmlSerializer ( type) . Deserialize ( fs) ; } } /// <summary> /// 序列化XML文件 /// </summary> /// <param name="data"></param> /// <param name="file"></param> /// <param name="type"></param> /// <returns></returns> public static bool WriteXML ( object , string , Type type) { using ( var = new FileStream ( file, FileMode. Create) ) { new XmlSerializer ( type) . Serialize ( fs, data) ; } return true ; } public static string XMLSerialize < T> ( T entity) { var = new StringBuilder ( ) ; var = new XmlSerializer ( typeof ( T ) ) ; using ( TextWriter writer= new StringWriter ( buffer) ) { serializer. Serialize ( writer, entity) ; } return buffer. ToString ( ) ; } public static string ByteToString ( byte [ ] ) { return Encoding. Default. GetString ( data) ; } public static byte [ ] StringToByte ( string value ) { return Encoding. Default. GetBytes ( value ) ; } public static T DeXMLSerialize < T> ( string ) { T cloneObject= default ( T ) ; var = new StringBuilder ( ) ; buffer. Append ( xmlString) ; var = new XmlSerializer ( typeof ( T ) ) ; using ( TextReader reader= new StringReader ( buffer. ToString ( ) ) ) { Object obj= serializer. Deserialize ( reader) ; cloneObject= ( T) obj; } return cloneObject; } /// <summary> /// 把对象序列化为字符串 /// </summary> /// <param name="pObj"></param> /// <returns></returns> public static byte [ ] SerializeObject ( object ) { if ( pObj== null ) return null ; var = new MemoryStream ( ) ; var = new BinaryFormatter ( ) ; formatter. Serialize ( _memory, pObj) ; _memory. Position= 0 ; var = new byte [ _memory. Length] ; _memory. Read ( read, 0 , read. Length) ; _memory. Close ( ) ; return Compress ( read) ; } /// <summary> /// 把字节反序列化成相应的对象 /// </summary> /// <param name="pBytes">字节流</param> /// <returns>object</returns> public static object DeserializeObject ( byte [ ] ) { object = null ; if ( pBytes== null ) return _newOjb; var = new MemoryStream ( Decompress ( pBytes) ) ; _memory. Position= 0 ; var = new BinaryFormatter ( ) ; _newOjb= formatter. Deserialize ( _memory) ; _memory. Close ( ) ; return _newOjb; } /// <summary> /// Write byte[] to file /// </summary> public static void WriteByteToFile ( byte [ ] , string ) { var = new FileStream ( filePath, FileMode. Create) ; //将byte数组写入文件中 fs. Write ( dataSource, 0 , dataSource. Length) ; fs. Close ( ) ; } /// <summary> /// Read byte from file /// </summary> /// <param name="filePath"></param> /// <returns></returns> public static byte [ ] ReadByteFromFile ( string ) { var = new FileStream ( filePath, FileMode. Open) ; //获取文件大小 long = fs. Length; var = new byte [ size] ; //将文件读到byte数组中 fs. Read ( array, 0 , array. Length) ; fs. Close ( ) ; return array; } /// <summary> /// Write object to file /// </summary> public static void WriteObjectToFile ( object , string ) { var = new FileStream ( filePath, FileMode. Create) ; byte [ ] = SerializeObject ( dataSource) ; //将byte数组写入文件中 fs. Write ( arraysource, 0 , arraysource. Length) ; fs. Close ( ) ; } /// <summary> /// Read object from file /// </summary> /// <param name="filePath"></param> /// <returns></returns> public static object ReadObjectFromFile ( string ) { var = new FileStream ( filePath, FileMode. Open) ; //获取文件大小 long = fs. Length; var = new byte [ size] ; //将文件读到byte数组中 fs. Read ( array, 0 , array. Length) ; fs. Close ( ) ; return DeserializeObject ( array) ; } /// <summary> /// 字符串压缩 /// </summary> /// <param name="strSource"></param> /// <returns></returns> public static byte [ ] Compress ( byte [ ] ) { try { var = new MemoryStream ( ) ; var = new GZipStream ( ms, CompressionMode. Compress, true ) ; zip. Write ( data, 0 , data. Length) ; zip. Close ( ) ; var = new byte [ ms. Length] ; ms. Position= 0 ; ms. Read ( buffer, 0 , buffer. Length) ; ms. Close ( ) ; return buffer; } catch ( Exception e) { throw new Exception ( e. Message) ; } } /// <summary> /// 字符串解压缩 /// </summary> /// <param name="strSource"></param> /// <returns></returns> public static byte [ ] Decompress ( byte [ ] ) { try { var = new MemoryStream ( data) ; var = new GZipStream ( ms, CompressionMode. Decompress, true ) ; var = new MemoryStream ( ) ; var = new byte [ 0x1000 ] ; while ( true ) { int = zip. Read ( buffer, 0 , buffer. Length) ; if ( reader<= 0 ) { break ; } msreader. Write ( buffer, 0 , reader) ; } zip. Close ( ) ; ms. Close ( ) ; msreader. Position= 0 ; buffer= msreader. ToArray ( ) ; msreader. Close ( ) ; return buffer; } catch ( Exception e) { throw new Exception ( e. Message) ; } } /// <summary> /// string 压缩 /// </summary> /// <param name="str"></param> /// <returns></returns> public static string CompressString ( string ) { string = "" ; byte [ ] = Encoding. GetEncoding ( "UTF-8" ) . GetBytes ( str) ; byte [ ] = Compress ( compressBeforeByte) ; //compressString = Encoding.GetEncoding("UTF-8").GetString(compressAfterByte); compressString= Convert. ToBase64String ( compressAfterByte) ; return compressString; } /// <summary> /// string 解压缩 /// </summary> /// <param name="str"></param> /// <returns></returns> public static string DecompressString ( string ) { string = "" ; //byte[] compressBeforeByte = Encoding.GetEncoding("UTF-8").GetBytes(str); byte [ ] = Convert. FromBase64String ( str) ; byte [ ] = Decompress ( compressBeforeByte) ; compressString= Encoding. GetEncoding ( "UTF-8" ) . GetString ( compressAfterByte) ; return compressString; } } } 二 DataModel public class DataModel { [ Category ( "算法参数" ) , Description ( "面积阈值" ) ] public double { get ; set ; } = 100 ; [ Category ( "算法参数" ) , Description ( "宽阈值" ) ] public double { get ; set ; } = 200 ; [ Category ( "算法参数" ) , Description ( "高阈值" ) ] public double { get ; set ; } = 300 ; } 三 保存XML文件 private void button1_Click ( object , EventArgs e) { DataModel dataModel= new DataModel ( ) ; dataModel. Area= 101 ; dataModel. Width= 202 ; dataModel. Height= 303 ; XmlSerializerHelper. WriteXML ( dataModel, @"D:\\DataModel.xml" , typeof ( DataModel ) ) ; } 四 读取XML文件 private void button2_Click ( object , EventArgs e) { DataModel dataModel= new DataModel ( ) ; dataModel= XmlSerializerHelper. ReadXML ( "testXmlDataModel.xml" , typeof ( TestXmlDataModel ) ) as TestXmlDataModel ; Double test1= Convert. ToDouble ( dataModel. Area) ; Double test2= Convert. ToDouble ( dataModel. Width) ; Double test3= Convert. ToDouble ( dataModel. Height) ; propertyGrid1. SelectedObject= dataModel; } 五 propertyGrid1 DataModel dataModel= new DataModel ( ) ; dataModel= XmlSerializerHelper. ReadXML ( "testXmlDataModel.xml" , typeof ( TestXmlDataModel ) ) as TestXmlDataModel ; Double test1= Convert. ToDouble ( dataModel. Area) ; Double test2= Convert. ToDouble ( dataModel. Width) ; Double test3= Convert. ToDouble ( dataModel. Height) ; propertyGrid1. SelectedObject= dataModel;
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