To copy files from one location to shared location using C#

Question

 Hi All,
I have a C# program to copy the files from one location to another and its working fine if the destination location is in same server but my requirement is to copy the files from server-1 to server-2 where i have a shared location created (\\Server2\Testfile). From Server1 i have the permission to access the shared folder, copy the files, delete files but through program its says "Access to the path '\\Server2\Testfile' is denied.

 

Thanks

Shagil

Answer 1

Hello use this code-

 

string ftpUserName = ConfigurationSettings.AppSettings["ftpuserid"].ToString();

string ftpPassword = ConfigurationSettings.AppSettings["ftppasswrd"].ToString();

string ftppath = ConfigurationSettings.AppSettings["ftppath"].ToString();

string localpath = ConfigurationSettings.AppSettings["localpath"].ToString();

try

{

if (!System.IO.Directory.Exists(localpath))

{

Console.ForegroundColor = ConsoleColor.Red;

Console.WriteLine("ERROR in Step 2.1 : Directory does not exist.");

cLog.ErrorLog(path1, "ERROR in Step 2.1 : Directory does not exist.");

Console.ResetColor();

}

else

{

DirectoryInfo DirInfo = new DirectoryInfo(localpath);

var files = from file in DirInfo.EnumerateFiles()

where file.CreationTimeUtc > dtLastModified

//where file.LastWriteTimeUtc > dtLastModified // .CreationTimeUtc > dt1 &

orderby file.LastWriteTimeUtc ascending

//file.CreationTimeUtc < dtLastModified

select file;

//string[] files = System.IO.Directory.GetFiles(localpath);

foreach (var fi in files)

{

DateTime lastModifie = fi.LastWriteTimeUtc;

DateTime creationTime = fi.CreationTimeUtc;

DateTime lastAccessTime = fi.LastWriteTimeUtc;

//if (lastModifie <= dtLastModified)

//{

// //==== leave this file

//}

//else

//{

//================== FTP upload =======================//

// come here.....

FtpWebRequest req = (FtpWebRequest)WebRequest.Create((ftppath) + fi.Name);

req.Credentials = new NetworkCredential(ftpUserName, ftpPassword);

string localPath = localpath + fi.Name;

req.Timeout = 90000;

try

{

UploadFile(req, localPath, -1);

Console.ForegroundColor = ConsoleColor.Green;

Console.WriteLine("File uploaded : " + fi.Name);

Console.ResetColor();

}

catch (Exception ex)

{

Console.ForegroundColor = ConsoleColor.Red;

Console.WriteLine("ERROR in Step 2.2 : File Not Uploaded.");

Console.ResetColor();

// We have to close down application.. if error occurs.

}

finally

{

req = null;

}

//=====================================================//

//}

}

}

}

const Int32 defaultBufferSize = 1024; // 1KB

public static void UploadFile(FtpWebRequest req, string localFilePath, Int32 bufferSize)

{

if (bufferSize < 1) bufferSize = defaultBufferSize;

FileStream tempStream = new FileStream(localFilePath, FileMode.Open);

byte[] buffer = new byte[bufferSize];

Int64 noOfBuffers = tempStream.Length / Convert.ToInt64(bufferSize); // Rounds off automatically

Int32 lastBufferSize = Convert.ToInt32(tempStream.Length - noOfBuffers * bufferSize);

req.Method = WebRequestMethods.Ftp.UploadFile;

Stream ftpStream = req.GetRequestStream();

//Buffers being read completely

for (int i = 0; i < noOfBuffers; i++)

{

tempStream.Read(buffer, 0, buffer.Length);

ftpStream.Write(buffer, 0, buffer.Length);

}

if (lastBufferSize > 0)

{

//Last buffer is not read completely

tempStream.Read(buffer, 0, lastBufferSize);

ftpStream.Write(buffer, 0, lastBufferSize);

}

ftpStream.Close();

tempStream.Close();

}

public static readonly List<string> ImageExtensions = new List<string> { ".JPG", ".JPE", ".BMP", ".GIF", ".PNG", ".CSV", ".TXT", ".XML" };

 

Answer 2

This is the part of coding where i do the file copying, i tried without impersonation but same result


[DllImport("advapi32.dll", SetLastError = true)]
public static extern bool LogonUser(string pszUsername, string pszDomain, string pszPassword,
int dwLogonType, int dwLogonProvider, ref IntPtr phToken);
// closes open handes returned by LogonUser
[DllImport("kernel32.dll", CharSet = CharSet.Auto)]
public extern static bool CloseHandle(IntPtr handle);
//elevate privileges before doing file copy to handle domain security
WindowsImpersonationContext impersonationContext = null;
IntPtr userHandle = IntPtr.Zero;
const int LOGON32_PROVIDER_DEFAULT = 0;
const int LOGON32_LOGON_INTERACTIVE = 2;
string domain = ConfigurationManager.AppSettings["ImpersonationDomain"];
string user = ConfigurationManager.AppSettings["ImpersonationUserName"];
string password = ConfigurationManager.AppSettings["ImpersonationPassword"];
// if domain name was blank, assume local machine
if (domain == "")
{
domain = System.Environment.MachineName;
}
// Call LogonUser to get a token for the user
bool loggedOn = LogonUser(user,domain,password,LOGON32_LOGON_INTERACTIVE,LOGON32_PROVIDER_DEFAULT,ref userHandle);
if (!loggedOn)
{
WriteErrorLog("Exception impersonating user, error code: " + Marshal.GetLastWin32Error());
}
// Begin impersonating the user
impersonationContext = WindowsIdentity.Impersonate(userHandle);
//run the program with elevated privileges (like file copying from a domain server)
// Here i do the file copiying
foreach (string s in files)
{
System.IO.File.Copy(s, System.Configuration.ConfigurationManager.AppSettings["DestinatioinFilePath"].ToString() + FileName, true);
}
impersonationContext.Undo();