再谈异常处理try catch finally

/// <summary>
/// 保存记录
/// </summary>
/// <param name="entity">实体</param>
public virtual object Save(T entity)
{
ISession session = NHibernateUtils.GetCurrentSession();
ITransaction tx = null;
try
{
tx = session.BeginTransaction();
object id = session.Save(entity);
tx.Commit();
return id;
}
catch (HibernateException ex)
{
if (tx != null) tx.Rollback();
throw ex;
}
finally
{
NHibernateUtils.CloseSession();
}
}

catch (HibernateException ex)
{
if (tx != null) tx.Rollback();
throw ex;
}

try
{
Cursor = Cursors.WaitCursor;
IApplicationContext ctx = ContextRegistry.GetContext();
IStoreRepository storeRepository = ctx.GetObject("StoreRepository") as IStoreRepository;
StoreInfo store = Store;
store.Name = XXName.Text.Trim();
storeRepository.Save(store);
}
catch (Exception ex)
{
ShowMessageBox(ex, MessageLevel.Error);
}
finally
{
Cursor = Cursors.Arrow;
}

private string _name;
/// <summary>
/// 店铺名称
/// </summary>
public virtual string Name
{
set
{
if (string.IsNullOrEmpty(value))
{
throw new ArgumentNullException("value", "店铺名称不能为空！");
}
if (ValidationUtils.GetLength(value,CharacterType.NVarChar) > 200)
{
throw new ArgumentOutOfRangeException("value", "店铺名称不能大于200！");
}
_name = value;
}
get { return _name; }
}