c#简单的io

读取路径判断文件是否存在，进行删除或者创建

简单的io

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
 
namespace ComprehensiveTest.com.myio
{
    public class IoManager
    {
        private static IoManager instance = null;
 
        public static IoManager Instance
        {
            get {
                if (IoManager.instance == null)
                {
                    IoManager.instance = new IoManager();
                }
                return IoManager.instance; 
            }
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="targetPath"></param>
        /// <returns></returns>
        public bool CreateFile(string targetPath)
        {
            if (File.Exists(targetPath))
            {
                return true;
            }
            else
            {
                try
                {
                    //使用这2种方法都可以
                    //FileStream file = File.Create(targetPath);
                    FileStream file = new FileStream(targetPath, FileMode.Create);
                    file.Close();
                    return true;
                }
                catch (Exception e)
                {
                    Console.WriteLine("创建文件{0}，失败 ， 原因 ： {1} ", targetPath, e.ToString());
                    return false;
                }
            }
        }
        /// <summary>
        /// 获得电脑所有的驱动盘
        /// </summary>
        /// <returns></returns>
        public string[] GetMyLogicalDrives()
        {
            return Directory.GetLogicalDrives();
        }
        /// <summary>
        /// 移动数据
        /// </summary>
        /// <param name="oldPath"> 原始的路径  </param>
        /// <param name="newPath"> 新的路径 </param>
        /// <returns> 操作是否成功 </returns>
        public bool MoveFile(string oldPath, string newPath)
        {
            if (File.Exists(oldPath))
            {
                try
                {
                    File.Move(oldPath, newPath);
                    return true;
                }
                catch (Exception e)
                { 
                    Console.WriteLine("移动文件{0}，失败 ， 原因 ： {1} " , oldPath , e.ToString() );
                    return false;
                }
            }
            else
            {
                Console.WriteLine("Error , {0}文件不存在！！！ " , oldPath );
                return false;
            }
        }
        /// <summary>
        /// 复制一个文件
        /// </summary>
        /// <param name="oldPath"></param>
        /// <param name="newPath"></param>
        /// <returns></returns>
        public bool CopyFile(string oldPath, string newPath)
        {
            if (File.Exists(oldPath))
            {
                try
                {
                    File.Copy(oldPath, newPath);
                    return true;
                }
                catch (Exception e)
                {
                    Console.WriteLine("复制文件{0}，失败 ， 原因 ： {1} ", oldPath, e.ToString());
                    return false;
                }
            }
            else
            {
                Console.WriteLine("Error , {0}文件不存在！！！ ", oldPath);
                return false;
            }
        }
        /// <summary>
        /// 删除一个文件
        /// </summary>
        /// <param name="targetPath"></param>
        /// <returns></returns>
        public bool DeleteFile( string targetPath )
        {
            if(File.Exists( targetPath ))
            {
                try
                {
                    File.Delete(targetPath);
                    return true;
                }
                catch (Exception e)
                {
                    Console.WriteLine("删除文件{0}，失败 ， 原因 ： {1} ", targetPath, e.ToString());
                    return false;
                }
            }
            else
            {
                Console.WriteLine("Error , {0}文件不存在！！！ ", targetPath);
                return false;
            }
        }
        /// <summary>
        /// 创建一个文件夹
        /// </summary>
        /// <param name="path"></param>
        /// <returns></returns>
        public bool CreateFolder(string path)
        {
            if (Directory.Exists(path))
            {
                Console.WriteLine("文件夹{0}已经存在", path);
                return true;
            }
            else
            {
                try
                {
                    DirectoryInfo dirInfo = Directory.CreateDirectory(path);
                    Console.WriteLine("创建文件夹成功 ， 创建时间为{0}", Directory.GetCreationTime(path));
                    return true;
                }
                catch (Exception e)
                {
                    Console.WriteLine("创建文件夹失败 ， 失败原因{0}", e.ToString());
                    return false;
                }
            }
        }
        /// <summary>
        /// 删除文件夹
        /// </summary>
        /// <param name="path"></param>
        /// <returns></returns>
        public bool DeleteFolder(string path)
        {
            if (Directory.Exists(path))
            {
                try
                {
                    Directory.Delete(path);
                    return true;
                }
                catch (Exception e)
                {
                    Console.WriteLine("删除文件夹失败 ， 失败原因{0}", e.ToString());
                    return false;
                }
            }
            else
            {
                return true;
            }
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="oldPath"></param>
        /// <param name="newPath"></param>
        /// <returns></returns>
        public bool MoveFolder(string oldPath , string newPath)
        {
            if (Directory.Exists(oldPath))
            {
                try
                {
                    Directory.Move(oldPath, newPath);
                    return true;
                }
                catch (Exception e)
                {
                    Console.WriteLine("移动文件夹{0}，失败 ， 原因 ： {1} ", oldPath, e.ToString());
                    return false;
                }
            }
            else
            {
                Console.WriteLine("Error , {0}文件夹不存在！！！ ", oldPath);
                return false;
            }
        }
        /// <summary>
        /// 读取文件( 一个个读 ）老是在流以外 ， 无法读到正确的值
        /// </summary>
        /// <param name="targetPath"></param>
        /// <returns></returns>
        public bool ReadOneByOneTest(string targetPath)
        {
            if (File.Exists(targetPath))
            {
                FileStream fs = new FileStream(targetPath, FileMode.Open, FileAccess.Read);
                BinaryReader br = new BinaryReader(fs);
                br.BaseStream.Seek(0, SeekOrigin.Begin); //将指针设到开头
                while (br.BaseStream.Position < br.BaseStream.Length)
                {
                    try
                    {
                        Console.WriteLine(br.ReadString());
                    }
                    catch (EndOfStreamException e)
                    {
                        Console.WriteLine("已经到了结尾 {0}", e.ToString());
                    }
                }
                br.Close();
                fs.Close();
                return true;
            }
            else
            {
                return false;
            }
        }
        /// <summary>
        /// 读取文本
        /// </summary>
        /// <param name="targetPath"></param>
        /// <returns></returns>
        public bool ReadCommon(string targetPath)
        {
            if (File.Exists(targetPath))
            {
                //using (StreamReader sr = File.OpenText(targetPath)) // 读中文将乱码
                using( StreamReader sr = new StreamReader( targetPath , UnicodeEncoding.GetEncoding("GB2312"))) // 解决中文乱码问题
                {
                    string readStr;
                    while ((readStr = sr.ReadLine()) != null)
                    {
                        Console.WriteLine(readStr);
                    }
                    sr.Close();
                }
                return true;
            }
            else
            {
                return false;
            }
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="targetPath"></param>
        /// <param name="content"></param>
        /// <param name="isNendWarp"></param>
        /// <returns></returns>
        public bool WriteCommon(string targetPath , string content , bool isNendWarp )
        {
            if (File.Exists(targetPath))
            {
                //using (StreamWriter sw = File.AppendText(targetPath)) // 中文乱码
                using( StreamWriter sw = new StreamWriter( targetPath , true ,UnicodeEncoding.GetEncoding("GB2312"))) // 解决中文乱码问题
                {
                    if (isNendWarp)
                    {
                        sw.WriteLine(content);
                    }
                    else
                    {
                        sw.Write(content);
                    }
                    sw.Close();
                }
                return true;
            }
            else
            {
                return false;
            }
        }
    }
}