如何从文件上传控件设置文件流？

Question

这是我的代码，我似乎无法将 FileUploadCotrol 中的文件放入 FILESTREAM。

 // The buffer size is set to 2kb
int buffLength = 2048;
byte[] buff = new byte[buffLength];
int contentLen;

// Opens a file stream (System.IO.FileStream) to read the file to be uploaded
FileStream fs = fileInf.OpenRead();

try
{
    // Stream to which the file to be upload is written
    Stream strm = reqFTP.GetRequestStream();

    // Read from the file stream 2kb at a time
    contentLen = fs.Read(buff, 0, buffLength);

    // Till Stream content ends
    while (contentLen != 0)
    {
        // Write Content from the file stream to the FTP Upload Stream
        strm.Write(buff, 0, contentLen);
        contentLen = fs.Read(buff, 0, buffLength);
    }

    // Close the file stream and the Request Stream
    strm.Close();
    fs.Close();
}

似乎我应该使用 Fileupload 控件从我的网站执行此操作，但奇怪的是控件创建的是流而不是文件流。是的，我正在通过 FTP 传输文件。

Answer 1

这是一个示例方法，它将我们所针对的两种类型 FileInfo 和 FtpWebRequest 作为参数并在它们之间传输数据。我相信这会奏效。

    void UploadFileToFtp(FileInfo file, FtpWebRequest req)
    {
        int buffLength = 2048;

        using (var reader = new BinaryReader(file.OpenRead()))
        {
            using (var writer = new BinaryWriter(req.GetRequestStream()))
            {
                while (reader.PeekChar() > 0) writer.Write(reader.ReadBytes(buffLength));
            }
        }
    }

希望这会有所帮助！