/// <summary>
/// Retrieve the authentication token required to make web service requests.
/// </summary>
/// <param name="username">The name of the user to authenticate.</param>
/// <param name="password">The user's password.</param>
/// <returns></returns>
private static string AuthenticateUser(string username, string password)
{
var proxy = new InvitationManagementServiceClient();
var result = proxy.AuthenticateUser(username, password);
return result.ResultData;
}
