使用SSH.NET时如何在MemoryStream中保存下载的文件 [英] How to save downloaded files in MemoryStream when using SSH.NET

问题描述

我正在使用SSH.NET库下载文件.我想将下载的文件另存为内存中的文件，而不是磁盘上的文件，但这没有发生.

I am using SSH.NET library to download files. I want to save the downloaded file as a file in memory, rather than a file on disk but it is not happening.

这是我的代码，可以正常工作:

This is my code which works fine:

using (var sftp = new SftpClient(sFTPServer, sFTPPassword, sFTPPassword))
{
    sftp.Connect();                    

    sftp.DownloadFile("AFile.txt", System.IO.File.Create("AFile.txt"));
    sftp.Disconnect();
}

这是无法正常工作的代码，因为它提供了0个字节的流.

and this is the code which doesn't work fine as it gives 0 bytes stream.

using (var sftp = new SftpClient(sFTPServer, sFTPPassword, sFTPPassword))
{
    sftp.Connect();

    System.IO.MemoryStream mem = new System.IO.MemoryStream();
    System.IO.TextReader textReader = new System.IO.StreamReader(mem);

    sftp.DownloadFile("file.txt", mem);                    
    System.IO.TextReader textReader = new System.IO.StreamReader(mem);
    string s = textReader.ReadToEnd(); // it is empty
    sftp.Disconnect();
}

推荐答案

您可以尝试以下代码，该代码在服务器上打开文件并将其读回到流中:

You can try the following code, which opens the file on the server and reads it back into a stream:

using (var sftp = new SftpClient(sFTPServer, sFTPUsername, sFTPPassword))
{
     sftp.Connect();

     // Load remote file into a stream
     var remoteFileStream = sftp.OpenRead("file.txt");
     System.IO.TextReader textReader = new System.IO.StreamReader(remoteFileStream);
     string s = textReader.ReadToEnd(); 
     sftp.Disconnect()
}

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