C# 实现FTP上传资料的示例

1.通过用FTP进行上传文件，首先要实现建立FTP连接，一般建立FTP连接，需要知道FTP配置有关的信息。一般要在Bean中建立一个ServiceFileInfo.cs文件进行记录，一般需要FTP地址、登录用户名和登录密码。然后通过其他页面进行访问读取。代码样式如下：

class ServiceFileInfo
  {
    // service1
    public static string txtFilePath = @"ftp://12.128.128.01/FileName/";
    //userid & password
    public static string txtUID = "username";
    public static string txtPWD = "password";
  }

2.通过主方法读取Bean文件下面的的ServiceFileInfo.cs文件的信息，去实现建立FTP连接。这里还需要清楚的知道你上传文件的路径(Path)和文件名称(FileName)。根据这些信息主方法去调用写着Bean中的另外一个ftpOperation.cs 文件(这个.cs文件中主要写一些关于FTP的操作方法)，进行FTP访问操作。

• 主方法调用FTP操作代码

ExecutionResult exeRes = this.ftpOperation.UploadFile(textFilePath, txtUID, txtPWD, Path + "/" + FileName + ".txt");//.txt为文件的后缀名

• Bean文件中ftpOperation.cs文件关于FTP操作的方法

public ExecutionResult UploadFile(string vIMSPath, string vUID, string vPassword, string vLocalPath)
    {
      ExecutionResult result = new ExecutionResult();
      result = connectState(vIMSPath, vUID, vPassword, vLocalPath);//调用下面代码方法
      if (result.Status)
      {
        File.Delete(vLocalPath);
      }
      return result;
    }

• connectState()方法

public static ExecutionResult connectState(string vIMSPath, string vUID, string vPassword, string fileName)
    {
      string operater = "";
      bool Flag = false;
      ExecutionResult result;
      result = new ExecutionResult();
      lock (lockObj)
      {
        try
        {
          operater = "Connet to FTP";
          FTPOperation ftp = new FTPOperation(new Uri(vIMSPath), vUID, vPassword);
          operater = "Upload file";
          Flag = ftp.UploadFile(fileName, Path.GetFileName(fileName), true);
          if (Flag)
          {
            result.Status = true;
            result.Message = "Send to server OK";
          }
        }
        catch (Exception ex)
        {
          result.Status = false;
          result.Anything = "Mail";
          result.Message = operater + ":" + ex.Message;
        }
      }
      return result;
    }

• UploadFile()方法

public bool UploadFile(string LocalFullPath, string RemoteFileName, bool OverWriteRemoteFile)
    {
      bool result;
      try
      {
        bool flag = !this.IsValidFileChars(RemoteFileName) || !this.IsValidFileChars(Path.GetFileName(LocalFullPath)) || !this.IsValidPathChars(Path.GetDirectoryName(LocalFullPath));
        if (flag)
        {
          throw new Exception("非法文件名或目录名!");
        }
        bool flag2 = File.Exists(LocalFullPath);
        if (!flag2)
        {
          throw new Exception("本地文件不存在!");
        }
        FileStream fileStream = new FileStream(LocalFullPath, FileMode.Open, FileAccess.Read);
        byte[] array = new byte[fileStream.Length];
        fileStream.Read(array, 0, (int)fileStream.Length);
        fileStream.Close();
        result = this.UploadFile(array, RemoteFileName, OverWriteRemoteFile);
      }
      catch (Exception ex)
      {
        this.ErrorMsg = ex.ToString();
        throw ex;
      }
      return result;
    }

public bool UploadFile(byte[] FileBytes, string RemoteFileName)
    {
      bool flag = !this.IsValidFileChars(RemoteFileName);
      if (flag)
      {
        throw new Exception("非法文件名或目录名!");
      }
      return this.UploadFile(FileBytes, RemoteFileName, false);
    }

public bool UploadFile(byte[] FileBytes, string RemoteFileName, bool OverWriteRemoteFile)
    {
      bool result;
      try
      {
        bool flag = !this.IsValidFileChars(RemoteFileName);
        if (flag)
        {
          throw new Exception("非法文件名！");
        }
        bool flag2 = !OverWriteRemoteFile && this.FileExist(RemoteFileName);
        if (flag2)
        {
          throw new Exception("FTP服务上面已经存在同名文件！");
        }
        this.Response = this.Open(new Uri(this.Uri.ToString() + RemoteFileName), "STOR");
        Stream requestStream = this.Request.GetRequestStream();
        MemoryStream memoryStream = new MemoryStream(FileBytes);
        byte[] array = new byte[1024];
        int num = 0;
        for (;;)
        {
          int num2 = memoryStream.Read(array, 0, array.Length);
          bool flag3 = num2 == 0;
          if (flag3)
          {
            break;
          }
          num += num2;
          requestStream.Write(array, 0, num2);
        }
        requestStream.Close();
        this.Response = (FtpWebResponse)this.Request.GetResponse();
        memoryStream.Close();
        memoryStream.Dispose();
        FileBytes = null;
        result = true;
      }
      catch (Exception ex)
      {
        this.ErrorMsg = ex.ToString();
        throw ex;
      }
      return result;
    }

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