Winform上传下载文件代码

using System;using System.Collections.Generic;using System.Text;using System.Net;using System.IO;namespace Common{    /// <summary>    /// winform形式的文件传输类    /// </summary>    public class WinFileTransporter    {        /// <summary>        /// WebClient上传文件至服务器，默认不自动改名        /// </summary>        /// <param name="fileNamePath">文件名，全路径格式</param>        /// <param name="uriString">服务器文件夹路径</param>        public void UpLoadFile(string fileNamePath, string uriString)        {            UpLoadFile(fileNamePath, uriString, false);        }        /// <summary>        /// WebClient上传文件至服务器        /// </summary>        /// <param name="fileNamePath">文件名，全路径格式</param>        /// <param name="uriString">服务器文件夹路径</param>        /// <param name="IsAutoRename">是否自动按照时间重命名</param>        public void UpLoadFile(string fileNamePath, string uriString, bool IsAutoRename)        {            string fileName = fileNamePath.Substring(fileNamePath.LastIndexOf("\\") + 1);            string NewFileName = fileName;            if (IsAutoRename)            {                NewFileName = DateTime.Now.ToString("yyMMddhhmmss") + DateTime.Now.Millisecond.ToString() + fileNamePath.Substring(fileNamePath.LastIndexOf("."));            }            string fileNameExt = fileName.Substring(fileName.LastIndexOf(".") + 1);            if (uriString.EndsWith("/") == false) uriString = uriString + "/";            uriString = uriString + NewFileName;            Utility.LogWriter log = new Utility.LogWriter();            //log.AddLog(uriString, "Log");            //log.AddLog(fileNamePath, "Log");            /**/            /// 创建WebClient实例            WebClient myWebClient = new WebClient();            myWebClient.Credentials = CredentialCache.DefaultCredentials;            // 要上传的文件            FileStream fs = new FileStream(fileNamePath, FileMode.Open, Fileaccess.Read);            //FileStream fs = OpenFile();            BinaryReader r = new BinaryReader(fs);            byte[] postArray = r.ReadBytes((int)fs.Length);            Stream postStream = myWebClient.OpenWrite(uriString, "PUT");            try            {                //使用UploadFile方法可以用下面的格式                //myWebClient.UploadFile(uriString,"PUT",fileNamePath);                if (postStream.CanWrite)                {                    postStream.Write(postArray, 0, postArray.Length);                    postStream.Close();                    fs.Dispose();                    log.AddLog("上传日志文件成功！", "Log");                }                else                {                    postStream.Close();                    fs.Dispose();                    log.AddLog("上传日志文件失败，文件不可写！", "Log");                }            }            catch (Exception err)            {                postStream.Close();                fs.Dispose();                //Utility.LogWriter log = new Utility.LogWriter();                log.AddLog(err, "上传日志文件异常！", "Log");                throw err;            }            finally            {                postStream.Close();                fs.Dispose();            }        }        /**/        /// <summary>        /// 下载服务器文件至客户端        /// </summary>        /// <param name="URL">被下载的文件地址，绝对路径</param>        /// <param name="Dir">另存放的目录</param>        public void Download(string URL, string Dir)        {            WebClient client = new WebClient();            string fileName = URL.Substring(URL.LastIndexOf("\\") + 1);  //被下载的文件名            string Path = Dir + fileName;   //另存为的绝对路径＋文件名            Utility.LogWriter log = new Utility.LogWriter();            try            {                WebRequest myre = WebRequest.Create(URL);            }            catch (Exception err)            {                //MessageBox.Show(exp.Message,"Error");                 log.AddLog(err, "下载日志文件异常！", "Log");            }            try            {                client.DownloadFile(URL, fileName);                FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.Read);                BinaryReader r = new BinaryReader(fs);                byte[] mbyte = r.ReadBytes((int)fs.Length);                FileStream fstr = new FileStream(Path, FileMode.OpenOrCreate, FileAccess.Write);                fstr.Write(mbyte, 0, (int)fs.Length);                fstr.Close();            }            catch (Exception err)            {                //MessageBox.Show(exp.Message,"Error");                log.AddLog(err, "下载日志文件异常！", "Log");            }        }    }}