上传功能:private void Upload(string filename) //上传功能
{
FileInfo fileInf = new FileInfo(filename);
string uri = "ftp://" + ftpServerIP + "/" + fileInf.Name; //uri登录方式
FtpWebRequest reqFTP;
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + "/" + fileInf.Name));
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
reqFTP.KeepAlive = false;
reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
reqFTP.UseBinary = true;
reqFTP.ContentLength = fileInf.Length;
// 缓冲区大小设置成2kb
int buffLength = 2048;
byte[] buff = new byte[buffLength];
int contentLen;
//打开一个文件流来读入上传的文件
FileStream fs = fileInf.OpenRead();
try
{
// 把要上传的文件写入流
Stream strm=reqFTP.GetRequestStream();
//从文件流中读取数据,一次读2kb大小的数据
contentLen = fs.Read(buff, 0, buffLength);
// Till Stream content ends
while (contentLen != 0)
{
//把文件的内容从文件流写到FTP上传流中
strm.Write(buff, 0, contentLen);
contentLen = fs.Read(buff, 0, buffLength);
}
//关闭文件流和请求流
strm.Close();
fs.Close();
}
catch(Exception ex)
{
MessageBox.Show(ex.Message, "上传出错");
}
}
加密功能:
public static String Encrypt(String Key, String str)
{
byte[] bKey = Encoding.UTF8.GetBytes(Key.Substring(0, 8));
byte[] bIV = IV;
byte[] bStr = Encoding.UTF8.GetBytes(str);
try
{
DESCryptoServiceProvider desc = new DESCryptoServiceProvider();
MemoryStream mStream = new MemoryStream();
CryptoStream cStream = new CryptoStream(mStream, desc.CreateEncryptor(bKey, bIV), CryptoStreamMode.Write);
cStream.Write(bStr, 0, bStr.Length);
cStream.FlushFinalBlock();
return Convert.ToBase64String(mStream.ToArray());
}
catch
{
return string.Empty;
}
}
我调用加密函数显示cannot 'string' to 'System.IO.Stream',求大神指点