public static async Task Main()
{
// get your 30-day trial key at https://www.rebex.net/support/trial/
Rebex.Licensing.Key = LicenseKey.Value;
try
{
// make sure we have an Azure application client ID and a Rebex key (feel free to remove these checks once configured)
if (ClientId.Contains("00000000-"))
{
throw new ApplicationException("Please configure ClientId in MainWindow.xaml.cs file.");
}
if (Rebex.Licensing.Key.Contains("_TRIAL_KEY_"))
{
throw new ApplicationException("Please set a license key in LicenseKey.cs file.");
}
// get an instanca of 'CCA' API
var cca = ConfidentialClientApplicationBuilder
.Create(ClientId)
.WithClientSecret(ClientSecretValue)
.WithTenantId(TenantId)
.Build();
// authenticate interactively for the scopes we need
Console.WriteLine("Authenticating via Office365...");
AuthenticationResult result = await cca.AcquireTokenForClient(Scopes).ExecuteAsync();
// keep the access token and account info
string accessToken = result.AccessToken;
// retrieve the list of recent messages
const int PageSize = 5;
const int MessageMaxCount = 20;
// connect using Rebex EWS and retrieve list of messages
using (var client = new Ews())
{
// communication logging (enable if needed)
//client.LogWriter = new FileLogWriter("ews-oauth.log", LogLevel.Debug);
/// impersonate for a mailbox
client.Settings.Impersonation = new EwsImpersonation()
{
SmtpAddress = SmtpAddress
};
// connect to the server
Console.WriteLine("Connecting to EWS...");
await client.ConnectAsync("outlook.office365.com", SslMode.Implicit);
// authenticate using the OAuth 2.0 access token
Console.WriteLine("Authenticating to EWS...");
await client.LoginAsync(accessToken, EwsAuthentication.OAuth20);
// list recent messages in the 'Inbox' folder
Console.WriteLine("Listing folder contents...");
EwsFolderInfo folderInfo = await client.GetFolderInfoAsync(EwsFolderId.Inbox);
for (int i = 0; i < Math.Min(MessageMaxCount, folderInfo.ItemsTotal); i += PageSize)
{
EwsMessageCollection list = await client.GetMessageListAsync(EwsFolderId.Inbox, EwsItemFields.Envelope, EwsPageView.CreateIndexed(i, Math.Min(PageSize, folderInfo.ItemsTotal - i)));
foreach (EwsMessageInfo item in list)
{
Console.WriteLine($"{item.ReceivedDate:yyyy-MM-dd} {item.From}: {item.Subject}");
}
}
}
Console.WriteLine("Finished successfully!");
}
catch (Exception ex)
{
Console.WriteLine($"Error: {ex}");
return;
}
}
private void GetMessageList()
{
const int PageSize = 5;
const int MessageMaxCount = 20;
lvItems.Items.Clear();
// connect using Rebex EWS and retrieve list of messages
using (var client = new Ews())
{
// communication logging (enable if needed)
//client.LogWriter = new FileLogWriter("ews-oauth.log", LogLevel.Debug);
// connect to the server
statusLabel.Content = "Connecting to EWS...";
client.Connect("outlook.office365.com", SslMode.Implicit);
// authenticate using the OAuth 2.0 access token
statusLabel.Content = "Authenticating to EWS...";
client.Login(_credentials.AccessToken, EwsAuthentication.OAuth20);
// list recent messages in the 'Inbox' folder
statusLabel.Content = "Listing folder contents...";
EwsFolderInfo folderInfo = client.GetFolderInfo(EwsFolderId.Inbox);
for (int i = 0; i < Math.Min(MessageMaxCount, folderInfo.ItemsTotal); i += PageSize)
{
EwsMessageCollection list = client.GetMessageList(EwsFolderId.Inbox, EwsItemFields.Envelope, EwsPageView.CreateIndexed(i, Math.Min(PageSize, folderInfo.ItemsTotal - i)));
foreach (EwsMessageInfo item in list)
{
lvItems.Items.Add($"{item.ReceivedDate:yyyy-MM-dd} {item.From}: {item.Subject}");
}
}
}
statusLabel.Content = "Finished successfully!";
}
