这节讲StreamReader & StreamWriter，这两个类用于操作字符或者字符串，它将流的操作封装在了底层，相对来说用法比较简单，但是它不支持Seek()方法。.../demo.txt", FileMode.Open, FileAccess.ReadWrite); StreamReader sr = new StreamReader(fs, true); StreamWriter...sw = new StreamWriter("....StreamWriter类对象也是一样的用法。 本节到此结束(昨天少发了一节，今天补上，IO系类结束)...
之前的文章介绍了StreamReader类，本文主要介绍StreamWriter类，我们先看一下StreamWriter的定义： public class StreamWriter : System.IO.TextWriter...TextWriter类是一个抽象类，StreamWriter是它的一个子类。....public StreamWriter(Stream stream); public StreamWriter(Stream stream, Encoding encoding); public...StreamWriter(Stream stream, Encoding encoding, int bufferSize); public StreamWriter(string path);...BaseStream：获取StreamWriter内部的数据流。 Encoding：获取StreamWriter内部的编码信息。
文档内容 /// 存入工作流 /// public class ExcelDocumentx { private readonly StreamWriter..._streamWriter; public ExcelDocumentx(Stream stream) { _streamWriter = new...StreamWriter(stream, Encoding.UTF8); } /// /// 写入Excel文件头...(""); _streamWriter.Write("<Table"); //默认行高...(""); _streamWriter.Close(); } } }
streamWriter = new StreamWriter(fs); streamWriter.Write(DateTime.Now.ToString() + "：..." + strformat + "\r\n" + "--------------------------\r\n"); streamWriter.Flush(); ...streamWriter.Close(); fs.Close(); } catch { ...streamWriter = new StreamWriter(fs); streamWriter.Write(DateTime.Now.ToString() + "：...streamWriter.Close(); fs.Close(); } catch {
废话不多说，直接上代码，关键代码都有注释，不理解的可以留言提出. private static StreamWriter streamWriter; //写文件 //将错误信息写入文件中...== null) { streamWriter = !...streamWriter.WriteLine("输出信息：错误信息"); if (message !...} } finally { if (streamWriter !...= null) { streamWriter.Flush(); streamWriter.Dispose
StreamWriter属性 StreamWriter示例 本章总结 为何介绍TextWriter?...首先我们先了解下StreamWriter的概念：实现一个 TextWriter，使其以一种特定的编码向流中写入字符。 那会有很多朋友会疑惑，StreamWriter和TextWriter有什么区别？...参数设置当前StreamWriter的缓冲区的大小 StreamWriter的属性 StreamWriter的方法大多都继承了TextWriter 这里就不在重复叙述了，这里就简单介绍下StreamWriter...using (StreamWriter writer = new StreamWriter(stream, this....对象 using (StreamWriter writer = new StreamWriter(_textFilePath, true, this.
TextWriter 和 StreamWriter 目录： 为何介绍TextWriter?...StreamWriter属性 StreamWriter示例 本章总结 为何介绍TextWriter?...参数设置当前StreamWriter的缓冲区的大小 StreamWriter的属性 StreamWriter的方法大多都继承了TextWriter 这里就不在重复叙述了，这里就简单介绍下StreamWriter...using (StreamWriter writer = new StreamWriter(stream, this....对象 using (StreamWriter writer = new StreamWriter(_textFilePath, true, this.
streamWriter = new StreamWriter(Application.dataPath + "PersonJson.Json"); streamWriter.Write...(json); streamWriter.Close(); streamWriter.Dispose(); } /// ...string json = JsonMapper.ToJson(kk); json = ConvertJson(json); StreamWriter streamWriter...= new StreamWriter(Application.dataPath + "/PersonJson.Json"); streamWriter.Write(json);...streamWriter.Close(); streamWriter.Dispose(); } 解析Json private void ReadJson() {
sw = new StreamWriter(@"d:\test\1.txt", true); for (int i = 0; i < 100; i++)...= k / 0;//引发异常，写入事件log } catch(Exception ex) { StreamWriter...sw = new StreamWriter(@"d:\test\1.txt", true); sw.WriteLine(ex.ToString());...sw = new StreamWriter(@"d:\test\2.txt", true); for (int i = 0; i < 100; i++)...sw = new StreamWriter(@"d:\test\2.txt", true); sw.WriteLine(ex.ToString());
resp, err := p.tr.pipelineRt.RoundTrip(req) done <- struct{}{} stream分为writer和reader两类： type streamWriter...{ w := &streamWriter{ go w.run() 在协程内部根据消息类型进行分发处理： func (cw *streamWriter) run() {...) writec() (chan<- raftpb.Message, bool) { func (cw *streamWriter) close() bool { func (cw *streamWriter...) closeUnlocked() bool { 当新连接建立的时候会通过attach方法将连接建立消息传递进来，这是消息循环的入口 func (cw *streamWriter) attach(conn...*outgoingConn) bool { select { case cw.connc <- conn: func (cw *streamWriter) stop() { reader的实现类似
public void Write(string text) { try { using (StreamWriter...sw = new StreamWriter(logFile, true, Encoding.UTF8)) { sw.Write(...sw = new StreamWriter(logFile, true, Encoding.UTF8)) { sw.Write(...sw = new StreamWriter(logFile, true, Encoding.UTF8)) { sw.Write(...sw = new StreamWriter(logFile, true, Encoding.UTF8)) { sw.Write(
sw = new StreamWriter(textfile, Encoding.Default); sw.Write(filecontent); i = true; sw.Close();...WriteMethord == 1) { FileStream textfile = File.Open(filepath, FileMode.Append, FileAccess.Write); StreamWriter...sw = new StreamWriter(textfile, Encoding.Default); sw.Write(filecontent); i = true; sw.Close();...WriteMethord == 2) { FileStream textfile = File.Open(filepath, FileMode.Create, FileAccess.Write); StreamWriter...sw = new StreamWriter(textfile, Encoding.Default); sw.Write(filecontent); i = true; sw.Close();
我们用 StreamWriter 来生成文件。...using (StreamWriter sw = new StreamWriter("a.txt")) { sw.Write("Hello"); // 5 字节 } using (StreamWriter...sw = new StreamWriter("b.txt", false, Encoding.UTF8)) { sw.Write("Hello"); // 8 字节 } 诡异的事情发生了，StreamWriter...utf8Encoding == null) utf8Encoding = new UTF8Encoding(true); return utf8Encoding; } } 而 StreamWriter
codecs模块提供了实现这些规则的方法，通过模块公开的方法我们能够方便地获取某种编码方式的Encoder和 Decoder工厂函数(Factory function)，以及StreamReader、StreamWriter...函数返回一个包含四个元素的TUPLE，其中t[0]是encoder的函数引用，t[1]是decoder的函数引用，t[2] 是UTF-8编码方式的StreamReader类对象引用，t[3]是UTF-8编码方式的StreamWriter...getreader(encoding) getwriter(encoding) 如果我们只是想获取一种utf-8编码的encoder方法，那么只需要这样做： 另外，对于StreamReader和StreamWriter...import codecs t = codecs.lookup('utf-8') print(t) encoder = t[0] decoder = t[1] StreamReader = t[2] StreamWriter...= t[3] print(encoder, decoder, StreamReader, StreamWriter) with codecs.open('demo.txt', 'r', encoding
==========>StreamReader和StreamWriter 2、StreamReader和StreamWriter简介 在C# 文件读写系列二中,我使用了FileStream完成了读取和写入文本文件的功能...和StreamWriter的实例方法ReadLine()、WriteLine()。...4、StreamWriter 注:当使用StreamWriter写入数据的时候,除非显示的调用Flush或者Close方法,或者设置AutoFlush的值为true,否则其缓冲区将不会刷新到基础流,也就是数据不会写入到硬盘中...主要的构造参数和StreamReader一样,一个Encoding和一个Stream实例.下面主要介绍StreamWriter的构造函数. (1)、StreamWriter构造函数....(3)StreamWriter的常用属性 AutoFlush:设置StreamWriter 是否在每次调用 StreamWriter.Write 之后，将其缓冲区刷新到基础流。也就是将数据写入到硬盘.
StreamReader 和 StreamWriter 类用于文本文件的数据读写。这些类从抽象基类 Stream 继承，Stream 支持文件流的字节读写。...是否覆盖 textBox1.Text=sr.ReadToEnd(); StreamWriter 类 StreamWriter 类继承自抽象类 TextWriter，表示编写器写入一系列字符。...下表列出了 StreamWriter 类中一些常用的方法： 序号 方法 & 描述 1 public override void Close() 关闭当前的 StreamWriter 对象和基础流。...byte []buffer=System.Text.Encoding.Default.GetBytes(str); fsWrite.write(buffer,0,buffer.Length); 2.利用StreamWriter...写入： SaveFileDialog sfd=new SaveFileDialog(); StreamWriter sw=new StreamWriter(sfd.FileName,Encoding.Default
---- 二、StreamWriter类共有7个构造函数： StreamWriter (Stream) // 用 UTF-8 编码及默认缓冲区大小，为指定的流初始化 StreamWriter...StreamWriter sw = new StreamWriter(@"D:\a.txt"); StreamWriter (Stream, Encoding) // 用指定的编码及默认缓冲区大小，...int为缓冲区大小 StreamWriter sw = new StreamWriter(fs, Encoding.UTF8,512); StreamWriter (String, Boolean...StreamWriter sw = new StreamWriter(@"D:\a.txt",true, Encoding.UTF8); StreamWriter (String, Boolean, Encoding...StreamWriter sw = new StreamWriter(@"D:\a.txt",true, Encoding.UTF8, 512); ---- 二、StreamWriter类常用方法
sw = new StreamWriter(Server.MapPath("Log.txt"), true); North.Log = sw; IQueryable...sw = new StreamWriter(Server.MapPath("Log.txt"), true); North.Log = sw; var...比如下面的代码： NorthWindDataContext ctx = new NorthWindDataContext(); StreamWriter...sw = new StreamWriter(Server.MapPath("Log.txt"), true); ctx.Log = sw; Customers...NorthWindDataContext ctx = new NorthWindDataContext(); StreamWriter sw = new StreamWriter
func (w StreamWriter) Write(src []byte) (n int, err error) func (w StreamWriter) Close() error type...func (StreamReader) Read func (r StreamReader) Read(dst []byte) (n int, err error) type StreamWriter...如果Write方法返回的n小于提供的切片的长度，则表示StreamWriter不同步，必须丢弃。StreamWriter没有内建的缓存，不需要调用Close方法去清空缓存。...func (StreamWriter) Write func (w StreamWriter) Write(src []byte) (n int, err error) func (StreamWriter...) Close func (w StreamWriter) Close() error 如果w.W字段实现了io.Closer接口，本方法会调用其Close方法并返回该方法的返回值；否则不做操作返回
这个类提供了在文件中读写字节的方法，但经常使用StreamReader或 StreamWriter执行这些功能。这是因为FileStream类操作的是字节和字节数组，而Stream类操作的是字符数据。...StreamReader和StreamWriter类多用于对小文件读写。...没读到文件中最后一行数据就一直读，读取文件中所有内容 { Console.WriteLine(sr.ReadLine()); } } } StreamWriter...FileStream(path, FileMode.Open, FileAccess.Write, FileShare.Write ))//using自动释放资源并且关闭 { using (StreamWriter...sw = new StreamWriter(fs, Encoding.Default)) { sw.Write("哈哈");//在指定路径文件下写入文本 }
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