/// <summary>
/// Authenticates the user.
/// </summary>
/// <param name="username">The username.</param>
/// <param name="password">The password.</param>
/// <returns></returns>
public bool AuthenticateUser(string username, string password)
{
int count = _resource.RetrieveUserCountByUsernameAndPassword(username, password);
bool isValidUser = (count == 1);
return(isValidUser);
}