上传下载资源

1. WebClient：

    1         /// <summary>  
    2         /// WebClient上传文件至服务器（不带进度条） 
    3         /// </summary>  
    4         /// <param name="localFilePath">要上传的文件（全路径格式）</param>  
    5         /// <param name="targetFolder">Web服务器文件夹路径</param> 
    6         /// <returns>True/False是否上传成功</returns>  
    7         public static void UpLoadFile(string localFilePath, string targetFolder)
    8         {
    9             //get file name
   10             string fileName = Path.GetFileName(localFilePath);
   11             if (string.IsNullOrEmpty(fileName))
   12             {
   13                 throw new InvalidOperationException("the file name is empty");
   14             }
   15             //get target url
   16             string targetUrl = Path.Combine(targetFolder, fileName);
   17 
   18             WebClient webClient = null;
   19             FileStream myFileStream = null;
   20             BinaryReader myBinaryReader = null;
   21             Stream writeStream = null;
   22 
   23             try
   24             {
   25                 webClient = new WebClient();
   26                 //初始化读取数据流
   27                 myFileStream = new FileStream(localFilePath, FileMode.Open, FileAccess.Read);
   28                 myBinaryReader = new BinaryReader(myFileStream);
   29                 byte[] postArray = myBinaryReader.ReadBytes((int)myFileStream.Length);
   30                 //打开远程Web地址，将文件流写入
   31                 writeStream = webClient.OpenWrite(targetUrl, "PUT");
   32                 writeStream.Write(postArray, 0, postArray.Length);
   33             }
   34             finally
   35             {
   36                 if (writeStream != null) { writeStream.Close(); }
   37                 if (myBinaryReader != null) { myBinaryReader.Close(); }
   38                 if (myFileStream != null) { myFileStream.Close(); }
   39                 if (webClient != null) { webClient.Dispose(); }
   40             }
   41         }
   42 
   43         /// <summary>  
   44         /// 下载服务器文件至客户端
   45         /// </summary>  
   46         /// <param name="strUrlFilePath">要下载的Web服务器上的文件地址</param>  
   47         /// <param name="strLocalDirPath">存放下载文件的本地目录</param>
   48         /// <returns>True/False是否上传成功</returns>  
   49         public static void DownLoadFile(string strUrlFilePath, string strLocalDirPath)
   50         {
   51             //get file name
   52             string fileName = Path.GetFileName(strUrlFilePath);
   53             if (string.IsNullOrEmpty(fileName))
   54             {
   55                 throw new InvalidOperationException("the file name is empty");
   56             }
   57 
   58             //判断本地目录是否存在，如不存在，则创建新目录
   59             if (!Directory.Exists(strLocalDirPath))
   60             {
   61                 Directory.CreateDirectory(strLocalDirPath);
   62             }
   63 
   64             string localFilePath = Path.Combine(strLocalDirPath, fileName);
   65 
   66             using (var client = new WebClient())
   67             {
   68                 client.DownloadFile(strUrlFilePath, localFilePath);
   69             }
   70         }