Winform(C#)——向服务器上传文件代码

public string  UpLoadFile(string fileNamePath, string uriString, bool IsAutoRename)
        {
            string fileName = fileNamePath.Substring(fileNamePath.LastIndexOf("\") + 1);
            uriString = "http://192.168.0.62/pdf/";
            string NewFileName = fileName;
            if (IsAutoRename)
            {
                NewFileName = DateTime.Now.ToString("yyyyMMddhhmmss") + DateTime.Now.Millisecond.ToString() + fileNamePath.Substring(fileNamePath.LastIndexOf("."));
            }

            string fileNameExt = fileName.Substring(fileName.LastIndexOf(".") + 1);
            if (uriString.EndsWith("/") == false) uriString = uriString + "/";

            uriString = uriString + NewFileName;

            ///  创建WebClient实例 
            WebClient myWebClient = new WebClient();
            myWebClient.Credentials = CredentialCache.DefaultCredentials;

            try
            {
                // 要上传的文件 
                FileStream fs = new FileStream(fileNamePath, FileMode.Open, FileAccess.Read);
                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();
                    }
                    else
                    {
                        postStream.Close();
                        fs.Dispose();
                    }
                }
                catch (Exception err)
                {
                    postStream.Close();
                    fs.Dispose();
                }
                finally
                {
                    postStream.Close();
                    fs.Dispose();
                }
                return NewFileName;
            }
            catch
            {
                ///
            }
            return NewFileName;
        }