var client = new CopyClient(
    new Config
        {
            CallbackUrl = "https://www.yourapp.com/Copy",
            ConsumerKey = ConsumerKey,
            ConsumerSecret = ConsumerSecret,

            //Token = Token,
            //TokenSecret = TokenSecret
        });

// Perform authorization (alternatively, provide a Token and TokenSecret in the Config object passed to CopyClient
await Authorize(client);

// Retrieve information on the logged-in user
var user = await client.UserManager.GetUserAsync();

// Retrieve the root folder of the logged-in user
var rootFolder = await client.GetRootFolder();

foreach (var child in rootFolder.Children)
{
    var childInfo = await client.FileSystemManager.GetFileSystemInformationAsync(child.Id);
}