C#文件上传和文件下载 

 1 #region 文件上传  
 2    private void UpLoadFile(string fileName, string fileNamePath, string uriString)  
 3    {  
 4        string NewFileName = DateTime.Now.ToString("yyMMddhhmmss") + DateTime.Now.Millisecond.ToString() + fileNamePath.Substring(fileNamePath.LastIndexOf(".")); string fileNameExt = fileName.Substring(fileName.LastIndexOf(".") + 1);  
 5        if (uriString.EndsWith("/") == false)  
 6            uriString = uriString + "/";  
 7        uriString = uriString + NewFileName;  
 8        WebClient myWebClient = new WebClient();  
 9        myWebClient.Credentials = CredentialCache.DefaultCredentials;  
10        FileStream fs = new FileStream(fileNamePath, FileMode.Open, FileAccess.Read); BinaryReader r = new BinaryReader(fs);  
11        try  
12        {  
13            byte[] postArray = r.ReadBytes((int)fs.Length); Stream postStream = myWebClient.OpenWrite(uriString, "PUT");  
14            if (postStream.CanWrite) { postStream.Write(postArray, 0, postArray.Length); }  
15            else { MessageBox.Show("文件目前不可写！"); } postStream.Close();  
16        }  
17        catch (Exception ex) { MessageBox.Show(ex.Message); }  
18    }  
19    #endregion  
20  
21  
22    #region C#下载服务器文件至客户端的代码：  
23    public void Download(string URL, string Dir)  
24    {  
25        WebClient client = new WebClient(); string fileName = URL.Substring(URL.LastIndexOf("\\") + 1);  
26        //被下载的文件名   
27        string Path = Dir + fileName;  
28        //另存为的绝对路径＋文件名  
29        try { WebRequest myre = WebRequest.Create(URL); }  
30        catch  
31        {  
32            MessageBox.Show(exp.Message, "Error");  
33        }  
34        try { client.DownloadFile(URL, Path); }  
35        catch { MessageBox.Show(exp.Message, "Error"); }  
36    }  
37  
38  
39    #endregion

 

posted on 2015-05-02 00:56  ultrastrong  阅读(616)  评论(0)  编辑  收藏  举报