一个基于封装CSLA框架后，设计业务类的例子：users

/// <summary>
/// 用户集
/// </summary>
[Serializable()]
[Phenix.Core.Data.Transactional(Phenix.Core.Data.TransactionOption.Completed)]
public class Users : Phenix.Business.BusinessListBase<Users, User>
{
#region 过程

/// <summary>
/// 查找索引
/// </summary>
/// <param name="user">用户名或者登录工号</param>
public int IndexOf(string user)
{
for (int i = 0; i < this.Count; i++)
{
User item = this.Items[i];
if (String.Compare(item.UserName, user, true) == 0 || String.Compare(item.UserNumber, user, true) == 0)
return i;
}
return -1;
}

#endregion
}