File FileStream StreamWriter StreamReader Read and write operation method

stringPath ="D:\\accountchecking\\test.txt";stringContent ="Abcdefg\r\nhigklmn\r\nopqrst";//Manipulate folder objects, none Create folders, you can create multiple levels at onceDirectory.CreateDirectory ("d:\\accountchecking\\");#regionfile-typical operations for files, such as copying, moving, renaming, creating, opening, deleting, and appending classes to a single file at a time//Write a filefile.writealltext (path, content, Encoding.default); File.writealllines (path, content. Split ('R'), Encoding.default); File.writeallbytes (Path, Encoding.Default.GetBytes (content));//Append Contentfile.appendalltext (path, content, Encoding.default);//Read the filestringcontent_t =file.readalltext (path, encoding.default);string[] content_s =file.readalllines (path, encoding.default);byte[] Content_b =file.readallbytes (path);#endregion#regionFilestream-reads, writes, opens and closes files on the file system as a stream, supporting both synchronous read and write operations and asynchronous read and write operations//Write a fileusing(FileStream FileStream =NewFileStream (path, FileMode.Create)) {    byte[] data =Encoding.Default.GetBytes (content); FileStream.Write (data,0, data. Length);//write content to buffer//Flush () writes the buffer contents to the file system, which is automatically written to the file system when it is closed or out of use .//Filestream.flush (); //using a closed stream that does not have to be displayed, it automatically shuts down and releases//filestream.close ();}//Append Contentusing(FileStream FileStream =NewFileStream (path, filemode.append)) {    byte[] data =Encoding.Default.GetBytes (content); FileStream.Write (data,0, data. Length);}//Read the fileusing(FileStream FileStream =NewFileStream (path, FileMode.Open)) {    byte[] data =New byte[Filestream.length]; FileStream.Read (data,0, data.    Length); stringresult =Encoding.Default.GetString (data); //Do something ...}#endregion#regionStreamwriter&streamreader-streamreader implements the abstract base class TextReader class, and StreamWriter implements the abstract base class TextWriter, respectively, for the reading and writing of the stream.//Write a fileusing(StreamWriter StreamWriter =NewStreamWriter (path)) {    //Method Onestreamwriter.write (content); StreamWriter.Flush ();//Write buffer contents to disk//using a closed stream that does not have to be displayed, it automatically shuts down and releases//StreamWriter.Close (); //Method TwoStreamwriter.writeline (content. ToCharArray ());//Write by line//StreamWriter.Flush ();}//Append Contentusing(StreamWriter StreamWriter =NewStreamWriter (Path,true)){    //Method Onestreamwriter.write (content);    StreamWriter.Flush (); //Method TwoStreamwriter.writeline (content. ToCharArray ());//Append by Row}//read a file (StreamReader like pointer displacement, so instantiate multiple objects)using(StreamReader streamreader_toline =NewStreamReader (path))using(StreamReader streamreader_toend =NewStreamReader (path))using(StreamReader streamreader_to =NewStreamReader (path)) {    stringmsg =String.Empty; //Method One     while(!Streamreader_toline.endofstream) {msg=Streamreader_toline.readline (); //Do something ...    }    //Method Two    if(!Streamreader_toend.endofstream) {msg=Streamreader_toend.readtoend (); //Do something ...    }    //Method Three    Char[] data =New Char[StreamReader_To.BaseStream.Length]; Streamreader_to.read (data,0, data.    Length); stringresult =NewString (data); //Do something ...}#endregion

File FileStream StreamWriter StreamReader Read and write operation method