如何将WebRequest流共享模式设置为share_read？

Question

我使用here的以下代码将大文件上传到ftp站点。 当文件上传到服务器时，我使用RDP进入服务器，无法打开它，因为它正在被另一个进程使用。

我的问题是，我可以设置文件共享模式，以便我可以在写入时读取文件吗？我想在写入时读取上传的文件。

FileStream fs = null; 
Stream rs = null; 

try 
{ 
    string file = "D:\\RP-3160-driver.zip"; 
    string uploadFileName = new FileInfo(file).Name; 
    string uploadUrl = "ftp://ftp.Sitename.com/tempFiles/"; 
    fs = new FileStream(file, FileMode.Open, FileAccess.Read); 

    string ftpUrl = string.Format("{0}/{1}", uploadUrl, uploadFileName); 
    FtpWebRequest requestObj = FtpWebRequest.Create(ftpUrl) as FtpWebRequest; 
    requestObj.Method = WebRequestMethods.Ftp.UploadFile; 
    requestObj.Credentials = new NetworkCredential("usernam", "password"); 
    rs = requestObj.GetRequestStream(); 

    byte[] buffer = new byte[8092]; 
    int read = 0; 
    while ((read = fs.Read(buffer, 0, buffer.Length)) != 0) 
    { 
     rs.Write(buffer, 0, read); 
    } 
    rs.Flush(); 
} 
catch (Exception e) 
{ 
    MessageBox.Show("File upload/transfer Failed.\r\nError Message:\r\n" + ex.Message, "Succeeded", MessageBoxButtons.OK, MessageBoxIcon.Information); 
} 
finally 
{ 
    if (fs != null) 
    { 
     fs.Close(); 
     fs.Dispose(); 
    } 

    if (rs != null) 
    { 
     rs.Close(); 
     rs.Dispose(); 
    } 
} 

Answer 1

试试下面，我添加FileShare.ReadWrite到FileStream：

string file = "D:\\RP-3160-driver.zip"; 
string uploadFileName = new FileInfo(file).Name; 
string uploadUrl = "ftp://ftp.Sitename.com/tempFiles/"; 

using (FileStream stream = File.Open(file, FileMode.Open, FileAccess.Read, FileShare.ReadWrite)) 
{ 
    string ftpUrl = string.Format("{0}/{1}", uploadUrl, uploadFileName); 
    FtpWebRequest requestObj = FtpWebRequest.Create(ftpUrl) as FtpWebRequest; 
    requestObj.Method = WebRequestMethods.Ftp.UploadFile; 
    requestObj.Credentials = new NetworkCredential("usernam", "password"); 
    using (Stream rs = requestObj.GetRequestStream()) 
    { 
     stream.CopyTo(rs); 
    } 
}