C# 文件的读写操作以及 复制/移动操作

文件的操作


using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms;using System.IO;namespace 文件的操作{public partial class Form1 : Form{public Form1(){InitializeComponent();}//写入文件private void button1_Click(object sender, EventArgs e){//[1]创建文件流FileStream fs = new FileStream("d:\\vs\\myfile.txt", FileMode.Create);//【2】创建写入器StreamWriter sw = new StreamWriter(fs);//[3]以流的方式写入数据sw.Write(this.textBox1.Text.Trim());//[4]关闭写入器sw.Close();//[5]关闭文件流fs.Close();}//读取文件private void button2_Click(object sender, EventArgs e){//[1]创建文件流FileStream fs = new FileStream("d:\\vs\\myfile.txt", FileMode.Open);//【2】创建读取器StreamReader sr = new StreamReader(fs);//[3]以流的方式读取数据this.textBox1.Text = sr.ReadToEnd();//[4]关闭读取器sr.Close();//[5]关闭文件流fs.Close();}//模拟写入日志private void button3_Click(object sender, EventArgs e){//[1]创建文件流FileStream fs = new FileStream("d:\\vs\\myfile.txt", FileMode.Append);//【2】创建写入器StreamWriter sw = new StreamWriter(fs);//[3]以流的方式写入数据sw.WriteLine(DateTime.Now.ToString() "【文件操作正常】");//[4]关闭写入器sw.Close();//[5]关闭文件流fs.Close();}//删除文件private void button6_Click(object sender, EventArgs e){File.Delete(this.textBox2.Text);}//复制文件private void button7_Click(object sender, EventArgs e){if (File.Exists(this.textBox3.Text.Trim())){File.Delete(this.textBox3.Text);}File.Copy(this.textBox2.Text.Trim(), this.textBox3.Text.Trim());//复制文件}private void button8_Click(object sender, EventArgs e){//首先判断目标路径文件是否存在（如果存在，直接复制会出现错误）if (File.Exists(this.textBox3.Text.Trim())){File.Delete(this.textBox3.Text);//删除文件}if (File.Exists(this.textBox2.Text.Trim()))//如果当前文件存在则移动{//移动文件File.Move(this.textBox2.Text.Trim(), this.textBox3.Text.Trim());}else{MessageBox.Show("文件不存在！");}}//获取指定目录下的文件private void button9_Click(object sender, EventArgs e){}private void Form1_Load(object sender, EventArgs e){}}}