private void detach_Login_Roles(Login_Role entity)
		{
			this.SendPropertyChanging();
			entity.Login = null;
		}
		private void attach_Login_Roles(Login_Role entity)
		{
			this.SendPropertyChanging();
			entity.Login = this;
		}
 partial void UpdateLogin_Role(Login_Role instance);
 partial void DeleteLogin_Role(Login_Role instance);
 partial void InsertLogin_Role(Login_Role instance);