C#File类常用的文件操作方法（创建、移动、删除、复制等）

File类，是一个静态类，主要是来提供一些函数库用的。静态实用类，提供了很多静态的方法，支持对文件的基本操作，包括创建，拷贝，移动，删除和 打开一个文件。

File类方法的参量很多时候都是路径path。File的一些方法可以返回FileStream和StreamWriter的对象。可以 和他们配套使用。System.IO.File类和System.IO.FileInfo类

主要提供有关文件的各种操作，在使用时需要引用System.IO命名空间。

一、File类常用的操作方法

1、创建文件方法

//参数1：要创建的文件路径

File.Create（@"D:\Test\Debug1\测试.txt"）

2、打开文件方法

//参数1：要打开的文件路径，参数2：打开的文件方式

File.Open(@"D:\Test\Debug1\测试.txt",FileMode.Append)

3、追加文件方法

//参数1：要追加的文件路径，参数2：追加的内容

File.AppendAllText(@"D:\Test\Debug1\测试.txt","哈哈");

4、复制文件方法

//参数1：要复制的源文件路径，参数2：复制后的目标文件路径，参数3：是否覆盖相同文件名
 File.Copy(@"D:\Test\Debug1\测试.txt", @"D:\Test\Debug2\测试1.txt", true);

5、移动文件方法

//参数1：要移动的源文件路径，参数2：移动后的目标文件路径
File.Move(@"D:\Test\Debug1\测试.txt", @"D:\Test\Debug3\测试2.txt");

6、删除文件方法

//参数1：要删除的文件路径
 File.Delete(@"D:\Test\Debug1\测试.txt");

7、设置文件属性方法

//参数1：要设置属性的文件路径，参数2：设置的属性类型（只读、隐藏等）
File.SetAttributes(@"D:\Test\Debug1\测试.txt", FileAttributes.Hidden);

二、界面和源码例子：

1、界面布局

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" alt="" width="448" height="167" />

2、源码例子：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace FileHandleTest
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        #region Files类的文件操作方法（创建、复制、删除、移动、追加、打开、设置属性等）

        static string path = @"D:\Test\Debug1\测试.txt";    //源文件路径
        static string path1 = @"D:\Test\Debug2\测试1.txt";  //文件复制路径
        static string path2 = @"D:\Test\Debug3\测试2.txt";  //文件移动路径
        static string path3 = @"C:\测试3.txt";    //跨盘符存放路径（测试）

        /// <summary>
        /// 1、创建文件方法
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btncreate_Click(object sender, EventArgs e)
        {
            //参数1：指定要判断的文件路径
            if (!File.Exists(path))
            {
                //参数1：要创建的文件路径，包含文件名称、后缀等
                FileStream fs = File.Create(path);
                fs.Close();
                MessageBox.Show("文件创建成功！");
            }
            else {
                MessageBox.Show("文件已经存在！");
            }
        }

        /// <summary>
        ///2、 打开文件的方法
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnopen_Click(object sender, EventArgs e)
        {
            if (File.Exists(path))
            {
                //参数1：要打开的文件路径，参数2：打开的文件方式
                FileStream fs = File.Open(path, FileMode.Append);
                //字节数组
                byte[] bytes = { (byte)'h', (byte)'e', (byte)'l', (byte)'l', (byte)'o' };
                //通过字符流写入文件
                fs.Write(bytes, 0, bytes.Length);
                fs.Close();
                MessageBox.Show("打开并追加Hello成功！");
            }
            else
            {
                MessageBox.Show("文件不存在！");
            }
        }

        /// <summary>
        /// 3、追加文件内容方法
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnappend_Click(object sender, EventArgs e)
        {
            string appendtext = this.txtContent.Text;
            if (File.Exists(path))
            {
                //参数1：要追加的文件路径，参数2：追加的内容
                File.AppendAllText(path, appendtext);
                MessageBox.Show("文件追加内容成功！");
            }
            else
            {
                MessageBox.Show("文件不存在！");
            }
        }

        /// <summary>
        /// 4、复制文件方法(只能在同个盘符进行操作)
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btncopy_Click(object sender, EventArgs e)
        {
            if (File.Exists(path))
            {
                //参数1：要复制的源文件路径，参数2：复制后的目标文件路径，参数3：是否覆盖相同文件名
                File.Copy(path, path1, true);
                MessageBox.Show("复制文件成功！");
            }
            else {
                MessageBox.Show("文件不存在！");
            }
        }

        /// <summary>
        /// 5、移动文件方法(只能在同个盘符进行操作)
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnmove_Click(object sender, EventArgs e)
        {
            if (File.Exists(path))
            {
                //参数1：要移动的源文件路径，参数2：移动后的目标文件路径
                File.Move(path, path2);
                MessageBox.Show("移动文件成功！");
            }
            else {
                MessageBox.Show("文件不存在！");
            }
        }

        /// <summary>
        /// 6、删除文件方法
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btndelete_Click(object sender, EventArgs e)
        {
            if (File.Exists(path))
            {
                //参数1：要删除的文件路径
                File.Delete(path);
                MessageBox.Show("文件删除成功！");
            }
            else
            {
                MessageBox.Show("文件不存在！");
            }
        }

        /// <summary>
        ////7、设置文件属性方法
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnset_Click(object sender, EventArgs e)
        {
            if (File.Exists(path))
            {
                //参数1：要设置属性的文件路径，参数2：设置的属性类型（只读、隐藏等）
                File.SetAttributes(path, FileAttributes.Hidden);
                MessageBox.Show("设置文件属性为隐藏成功！");
            }
            else
            {
                MessageBox.Show("文件不存在！");
            }
        }

        #endregion
    }

}

参考来源：http://www.cnblogs.com/mfc-itblog/p/5771780.html