(.NET Core C#) SFTP Get File Date/Times in Different Formats

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Demonstrates how to get remote file date/times in different formats.

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// This requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

Chilkat.SFtp sftp = new Chilkat.SFtp();

// Connect to the SSH server.  
string hostname = "my-sftp-server.com";
int port = 22;
bool success = sftp.Connect(hostname,port);
if (success != true) {
    Debug.WriteLine(sftp.LastErrorText);
    return;
}

// Authenticate with the SSH server. 
success = sftp.AuthenticatePw("myLogin","myPassword");
if (success != true) {
    Debug.WriteLine(sftp.LastErrorText);
    return;
}

// After authenticating, the SFTP subsystem must be initialized:
success = sftp.InitializeSftp();
if (success != true) {
    Debug.WriteLine(sftp.LastErrorText);
    return;
}

// Open a directory on the server...
// This example opens the "junk" directory located under the HOME directory of the SSH user account.
string handle = sftp.OpenDir("junk");
if (sftp.LastMethodSuccess != true) {
    Debug.WriteLine(sftp.LastErrorText);
    return;
}

// Download the directory listing:
Chilkat.SFtpDir dirListing = sftp.ReadDir(handle);
if (sftp.LastMethodSuccess != true) {
    Debug.WriteLine(sftp.LastErrorText);
    return;
}

// Close the directory handle
success = sftp.CloseHandle(handle);
if (success != true) {
    Debug.WriteLine(sftp.LastErrorText);
    return;
}

// Iterate over the files.
// Examine each filename and indicate those that match *FICHERO*.pdf
// (i.e. the filename contains the word "FICHERO" and ends in ".pdf")
int i = 0;
int n = dirListing.NumFilesAndDirs;
Chilkat.StringBuilder sbFilename = new Chilkat.StringBuilder();
bool caseSensitive = false;
bool bLocalDateTime = false;
while (i < n) {
    Chilkat.SFtpFile fileObj = dirListing.GetFileObject(i);
    Debug.WriteLine(fileObj.Filename);

    // Get the last-modified date/time
    Chilkat.CkDateTime dt = fileObj.GetLastModifiedDt();

    // Get the date/time in any format offered by the CkDateTime object.

    // such as Wed, 18 Oct 2017 09:08:21 GMT
    Debug.WriteLine("RFC822 format: " + dt.GetAsRfc822(bLocalDateTime));

    // such as 1990-12-31T23:59:60Z
    Debug.WriteLine("Timestamp: " + dt.GetAsTimestamp(bLocalDateTime));

    // Such as: "02/16/2008 12:15:12"  where hour is 0 to 23.
    Debug.WriteLine("RFC822 format: " + dt.GetAsIso8601("MM/DD/YYYY hh:mm:ss",bLocalDateTime));

    i = i + 1;
}

Debug.WriteLine("Success.");