(C# UWP/WinRT) Get IMAP UID from Email Header

Demonstrates how to get the IMAP UID from an email header. After fetching an email or header using IMAP, the UID is contained in the ckx-imap-uid header field.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads Chilkat for the Universal Windows Platform (UWP)

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

Chilkat.Imap imap = new Chilkat.Imap();

// Connect to an IMAP server.
// Use TLS
imap.Ssl = true;
imap.Port = 993;
bool success = await imap.ConnectAsync("imap.someMailServer.com");
if (success != true) {
    Debug.WriteLine(imap.LastErrorText);
    return;
}

// Login
success = await imap.LoginAsync("login","password");
if (success != true) {
    Debug.WriteLine(imap.LastErrorText);
    return;
}

// Select an IMAP mailbox
success = await imap.SelectMailboxAsync("Inbox");
if (success != true) {
    Debug.WriteLine(imap.LastErrorText);
    return;
}

bool fetchUids = true;
// Get the message UIDs of all the emails in the mailbox
Chilkat.MessageSet messageSet = await imap.SearchAsync("ALL",fetchUids);
if (imap.LastMethodSuccess != true) {
    Debug.WriteLine(imap.LastErrorText);
    return;
}

Chilkat.EmailBundle bundle = await imap.FetchHeadersAsync(messageSet);
if (imap.LastMethodSuccess != true) {

    Debug.WriteLine(imap.LastErrorText);
    return;
}

// The UID of each fetched email header is available 
// in the ckx-imap-uid header field.
int i = 0;
int szBundle = bundle.MessageCount;
Chilkat.MessageSet msOneMsg = new Chilkat.MessageSet();
while (i < szBundle) {
    Chilkat.Email email = bundle.GetEmail(i);

    // Build a message set containing one UID
    string uidStr = email.GetHeaderField("ckx-imap-uid");
    msOneMsg.FromCompactString(uidStr);

    // Move this message to some other folder.
    success = await imap.MoveMessagesAsync(msOneMsg,"someOtherFolder");
    if (success != true) {
        Debug.WriteLine(imap.LastErrorText);
        // Exit the loop...
        i = szBundle;
    }

    i = i + 1;
}

// Disconnect from the IMAP server.
success = await imap.DisconnectAsync();