C#读取文本文件和写文本文件

C#读取文本文件

今天一个学生问我如何从一个文本中读取内容,如下是做的是控制台中的例子,在别的地方也是这个道理。


        // 读操作
        public static void Read()
        {
            // 读取文件的源路径及其读取流
            string strReadFilePath = @"../../data/ReadLog.txt";
            StreamReader srReadFile = new StreamReader(strReadFilePath);

            // 读取流直至文件末尾结束
            while (!srReadFile.EndOfStream)
            {
                string strReadLine = srReadFile.ReadLine(); //读取每行数据
                Console.WriteLine(strReadLine); //屏幕打印每行数据
            }

            // 关闭读取流文件
            srReadFile.Close();
            Console.ReadKey();
        }

===================================================================

C# 写文本文件

        // 写操作
        public static void Write()
        {
            // 统计写入(读取的行数)
            int WriteRows = 0;

            // 读取文件的源路径及其读取流
            string strReadFilePath = @"../../data/ReadLog.txt";
            StreamReader srReadFile = new StreamReader(strReadFilePath);

            // 写入文件的源路径及其写入流
            string strWriteFilePath = @"../../data/WriteLog.txt";
            StreamWriter swWriteFile = File.CreateText(strWriteFilePath);

            // 读取流直至文件末尾结束,并逐行写入另一文件内
            while (!srReadFile.EndOfStream)
            {
                string strReadLine = srReadFile.ReadLine(); //读取每行数据
                ++WriteRows; //统计写入(读取)的数据行数

                swWriteFile.WriteLine(strReadLine); //写入读取的每行数据
                Console.WriteLine("正在写入... " + strReadLine);
            }

            // 关闭流文件
            srReadFile.Close();
            swWriteFile.Close();

            Console.WriteLine("共计写入记录总数:" + WriteRows);
            Console.ReadKey();
        }

 

========================================================================

完整源代码(经过本人测试,直接运行就可)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using System.IO; // 引用输入输出操作的命令空间

namespace ReadWriteFile
{
    class Program
    {

        // 主函数
        static void Main(string[] args)
        {
            Read(); // 读操作

            Write(); // 写操作
        }

        // 读操作
        public static void Read()
        {
            // 读取文件的源路径及其读取流
            string strReadFilePath = @"../../data/ReadLog.txt";
            StreamReader srReadFile = new StreamReader(strReadFilePath);

            // 读取流直至文件末尾结束
            while (!srReadFile.EndOfStream)
            {
                string strReadLine = srReadFile.ReadLine(); //读取每行数据
                Console.WriteLine(strReadLine); //屏幕打印每行数据
            }

            // 关闭读取流文件
            srReadFile.Close();
            Console.ReadKey();
        }

        // 写操作
        public static void Write()
        {
            // 统计写入(读取的行数)
            int WriteRows = 0;

            // 读取文件的源路径及其读取流
            string strReadFilePath = @"../../data/ReadLog.txt";
            StreamReader srReadFile = new StreamReader(strReadFilePath);

            // 写入文件的源路径及其写入流
            string strWriteFilePath = @"../../data/WriteLog.txt";
            StreamWriter swWriteFile = File.CreateText(strWriteFilePath);

            // 读取流直至文件末尾结束,并逐行写入另一文件内
            while (!srReadFile.EndOfStream)
            {
                string strReadLine = srReadFile.ReadLine(); //读取每行数据
                ++WriteRows; //统计写入(读取)的数据行数

                swWriteFile.WriteLine(strReadLine); //写入读取的每行数据
                Console.WriteLine("正在写入... " + strReadLine);
            }

            // 关闭流文件
            srReadFile.Close();
            swWriteFile.Close();

            Console.WriteLine("共计写入记录总数:" + WriteRows);
            Console.ReadKey();
        }
    }
}


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转载自blog.csdn.net/hongkaihua1987/article/details/80432436