http://tw.news.yahoo.com/article/url/d/a/090706/1/1mine.html

令傳統媒體又愛又恨的Twitter

更新日期:2009/07/06 08:35

◎台灣人民現在最需要的不是有品，是有工作！

中國觀光客來台這一年，人數沒達到預期，甚至我們還發現已經影響到日本、韓國和美國遊客來台觀光的意願，不少專帶日本團的導遊，和日本遊客就直言，受不了中國觀光客的吵鬧和不守秩序，現在只要是中國遊客會造訪的景點，他們能閃就閃。

日本旅遊團一到民主紀念館都會先來個大合照，不過，您可能不知道，這一年台灣開放陸客來台">陸客來台， 日本客現在能去的地方，已經越來越少了。

就來故宮實地走一遭，發現日本遊客對中國觀光客，真的很感冒，對中國觀光客很反感的可能不是只有日本人，來看98年1~3月數據，中國觀光客來台大幅飆漲之際，日本來台灣的人次竟然掉了近10%，韓國觀光客狂掉超過40%，連美國遊客也少了快2成。

馬政府搶攻中國觀光客，看在日本團資深導遊眼裡，根本是炒短線，他們擔心，中國觀光客的素質， 很可能會以鯨吞蠶食的方式，打壞台灣的旅遊行情和品質，到頭來倒楣的還是台灣，得不償失。

http://blog.darkthread.net/blogs/darkthreadtw/archive/2006/11/07/gridview-datagrid-ok-ga.aspx

http://msdn.microsoft.com/en-us/library/05yye6k9.aspx

GridView 欠擠 DataGrid, OK ga?

ASP.NET 2.0問市後，其中有個受人注目的明星---GridView，它以DataGrid接班人的態勢，企圖取而代之(由VS 2005中預設把DataGrid藏起來可見一斑)

其中，GridView最讓人稱道的改良就是以前DataGrid雖然提供了換頁、排序等功能，但仍要自己寫一小段Code。而GridView的換頁、排序等邏輯則全部內建了(其實要靠另一個新控件SqlDataSource幫忙)，光靠設定就可以完全搞定。另外，GridView甚至可以清單項目上編輯後直接更新或刪除某一筆資料(咳，說穿了還是得靠新朋友SqlDataSource，不要幻想DataSource=YourDataTable後就能看到奇蹟)。

理論上，GridView包容了所有DataGrid既有的特性，又加上方便的新功能，既然用VS 2005開發，傻瓜才不換吧?

對一般人來說是無庸置疑的抉擇，對我這種喜歡投時間DIY寫工具的人來說卻未必。因為先前感受DataGrid換頁、排序還要寫Code的痛苦，就開發了一顆名叫ListAssistant的控件，把這些煩人的工作包起來，將清單顯示的資料提供簡化成給DataTable即可，換頁/排序由控件全包。另外，ListAssistant還配合公司環境要求的UI互動模式，提供了額外的支援。比較起來，ListAssistant+DataGrid的組合會比GridView更符合我工作上的需要，但GridView又有一些額外的功能值得期待，值不值得投入時間做出ListAssistant+GridView的組合呢??

引用董大偉先生被ASP.NET 2.0搶走飯碗的Programmer?文章裡的一段話:

… 另外則是採用ASP.NET 1.1作為專案開發的人員(類似筆者這種)。過去我們花了很多心思從ASP轉換到ASP.NET 1.1，沒想到在ASP.NET 1.1才辛苦開發完成的函式庫，到了ASP.NET 2.0後，某些變成基本功能，我要說，心裡除了很X之外，實在也有點佩服微軟，畢竟這是一種進步，過去ASP.NET 1.1上要花長時間才能完成的東西，現在微軟則幫你做好擺在眼前等你享用...

在心裡很X之餘，仔細評估了一下，針對我的應用需求做分析，升級GridView並改寫ListAssistant是值得的嗎? 關鍵在於要了解GridView多了哪些新功能，才能決定成本效益比。所以就把焦點放在GridView多了哪些功能吧! (From: MSDN Comparing the GridView and DataGrid Web Server Controls)

1.Richer design-time capabilities.
最大的演進主要強調換頁、排序功能的整合，由於我的控件(ListAssistant)已提供此類功能，故吸引力不大。而那些在設計階段就可以看到資料型別進行操作的概念，對於較大型的系統，資料源都是執行階段才由DAL決定/提供，很少有人會直接在Page上放SqlDataSource，設Connection String，其實用處不大。

2.Improved data source binding capabilities.
SqlDataSource控件成為DataTable、DataReader之外的新資料來源，它有點DataAdapter的味道，例如要指定SelectCommand、InsertCommand、DeleteCommand、UpdateCommand。GridView而能自動Paging、Sorting絕大部分是它的功勞，而其原理是跟我的ListAssistant很相似，也是將資料全部查回存回記憶體中，再進行Paging/Sorting；EnableCache屬性則可將資料Cache起來，不用每次換頁或排序時都重新查一次(強烈建議要啟用)。原則上，這些功能並沒有超出先前控件所能做的範圍，因此吸引力有限。另外，由於可設Insert、Update、Delete的Command，可以直接在GridView中Edit/Update/Delete這個特性很不錯!
PS: 不要誤會SqlDataSoruce只能連SQL，事實上它支援Support SQL、Oracle、OLE DB與ODBC等多種Provider，只是大家從1.0起就習慣了SqlCommand、OracleCommand、OleDbConnection這種命名慣例，一開始會懷疑它是否是MS偏袒SQL Server所派的紅衛兵。

3.Automatic handling of sorting, paging, updates, and deletes.
跟上一點提的差不多，ListAssistant在1.1時代就已有實作，所以也沒啥值得大書特書的。

4.Additional column types and design-time column operations.
多了BoundField, HyperLinkField, ButtonField, CommandField ImageField, and CheckBoxField幾種新的欄位型式，這點很迷人!

5.A Customized pager user interface (UI) with the PagerTemplate property.
Pager可以100%客製化，由於ListAssistant中己有統一的Pager展現，手上專案則要求所有頁面要一致，所以這條就派不上用場囉!

綜合考量以上的各項特性，ListAssistant+DataGrid的組合跟GridView+SqlDataSource相比，只輸在直接Edit/Delete及新欄位類別等次要的功能上，而預估新特性適用的時機也有限。最後評估，既然功能差異有限，在ASP.NET 2.0上，短中期內打算仍沿用DataGrid，暫無升級/改寫的迫切需求，至於改寫ListAssistant配合GridView一事，就留待機緣成熟囉。

-----------------------------------------------------------------------

Comparing the GridView and DataGrid Web Server Controls

The GridView control is the successor to the DataGrid control. Like the DataGrid control, the GridView control was designed to display data in an HTML table. When bound to a data source, the DataGrid and GridView controls each display a row from a DataSource as a row in an output table.

Both the DataGrid and GridView controls are derived from the WebControl class. Although it has a similar object model to that of the DataGrid control, the GridView control also has a number of new features and advantages over the DataGrid control, which include:

• Richer design-time capabilities.

• Improved data source binding capabilities.

• Automatic handling of sorting, paging, updates, and deletes.

• Additional column types and design-time column operations.

• A Customized pager user interface (UI) with the PagerTemplate property.

Differences between the GridView control and the DataGrid control include:

• Different custom-paging support.

• Different event models.

 Improved Design-Time Capabilities

Sorting, paging, and in-place editing of data requires additional coding when using the DataGrid control. The GridView control enables you to add sorting, paging, and editing capabilities without writing any code. Instead, you can automate these tasks, along with other common tasks such as data binding to a data source, by setting properties on the control.

If you are working in a designer, such as Microsoft Visual Studio, you can take advantage of designer features built into the GridView control. The GridView control includes support for a smart tag panel that provides a convenient interface for performing common tasks, such as setting properties and launching template editing.

 Improved Data Source Binding Capabilities

Typically a DataSet control, a DbDataReader control, or a collection, such as an Array, an ArrayList, or some other class in the System.Collections namespace, is assigned to the DataSource property of either the DataGrid control or the GridView control. The DataGrid control and the GridView control can bind any object that implements the IEnumerable or IListSource interface.

While the DataGrid control can declaratively bind a DataSourceControl control, it can do so only for data selection. Sorting, paging, updates, and deletions must be coded manually. The GridView control supports a DataSourceID property that takes any object that implements the IDataSource interface and can, therefore, take advantage of the data source control's sorting, paging, updating, and deleting capabilities, for example, the SqlDataSource control.

 Additional Column Types

The GridView control supports the following column types: BoundField, HyperLinkField, ButtonField, CommandField ImageField, and CheckBoxField.

 Built-In and Custom Paging Support

The DataGrid control requires additional coding for paging. The GridView control automatically supports paging by setting the PagerSettings property. The PagerSettings property supports four modes: Numeric (default), NextPrevious, NumericFirstLast, and NextPreviousFirstLast. The Numeric mode displays numbered page links instead of "next/prev" links, and the NumericFirstLast option adds first and last page links. The GridView control's PagerStyle property can be used to set styles and the position of the pager.

Additionally, you can customize the pager buttons for the GridView control using a PagerTemplate.

Custom paging support in the GridView is supplied by the bound data source control as opposed to the AllowCustomPaging mechanism supplied by the DataGrid control.

 Expanded Event Model

The DataGrid and the GridView controls have different event models.

The DataGrid control raises single events for operations, while the GridView control is capable of both pre-operation and post-operation events. The GridView control supports the Sorting event that occurs when a field is sorted. Note that this sorting event occurs before the GridView control automatically handles the sort operation, giving you the opportunity to examine or change the SortExpression property, or cancel this operation by setting the Cancel property to true on the passed event arguments.

The GridView control supports the Sorted event that occurs after the GridView control completes the sort operation, giving you the opportunity to change or format the result of the sort operation. In comparison, the DataGrid control supports the SortCommand event that occurs when a column is sorted. Similarly, the GridView control supports RowUpdating and RowUpdated events that occur before and after the GridView control has automatically handled the update operation. In comparison, the DataGrid control supports the UpdateCommand event that occurs when the Update button is clicked for an item in the grid.

For more information on GridView events, see GridView Web Server Control Events.

Jackson has the last word from beyond the grave

His father was so racked with pain at the singer's passing that he used his moment in the limelight to try to make a buck, writes Gerard Wright.

Even by the standards of the modern entertainment industry, this was a naked and graceless power play. Less than a day after the second autopsy on his son Michael, there was Joe Jackson - craggy face and dyed hair, painted-on eyebrows and microscopic moustache - declaring he was back in charge. "We have the personal and legal authority to act, and have authority for our son and his children."

With him, that first weekend, were collaborators and protagonists from years past, as though, in reclaiming ownership of Michael and his legacy, Joe Jackson was being revisited by his own history.

There was the Reverend Jesse Jackson, who, at their first meeting in 1975 would try to prevent Joe from taking the Jackson 5 from the Motown label to Epic, arguing that it was cultural theft for the white-run subsidiary of CBS Records to lure a black act from a black label.

There was another reverend, Al Sharpton, who first appeared on the scene for the final Jacksons tour in 1984 - the one promoted by Don King - and who, it is alleged in the book Rockonomics by Marc Eliot, extorted tens of thousands of concert tickets and more than $US500,000 from promoters, in the face of threatened racial boycotts of the shows.

Each spoke for the Jackson family - unanswered questions, concerns about the treatment of their son and so on. To the cynical observer, it looked like a murder of crows, gathering about a carcass and proclaiming ownership.

Michael Jackson died on June 25 under circumstances yet unknown.

His mother Katherine, 79, tried to divorce Joe, also 79, 35 years ago, but he would not leave the family home. They now live apart, in Las Vegas. Joe Jackson's services as manager were terminated by Michael in 1983 and by his daughter Janet in 1987.

At the same function last weekend - the Black Entertainment Television Awards - Joe Jackson took time to spruik his new record label.

A former bankrupt, absent husband and monstrous father who built his boys into a force that reshaped American music - with methods that battered their psyches - Joe Jackson took a part of Michael's soul. In giving Michael to the world, he denied his son that guidance that, bit by bit, opens the child, the teenager, the adult to life's experiences and lessons and trials.

Michael Jackson spoke from beyond the grave about his father. It was there in his will - not the will, perhaps, since others apparently exist. In that first will to surface, the beneficiaries are his mother, his children and yet unnamed charities. The executor is Jackson's former lawyer John Branca. There is no mention of Joe Jackson.

The reason for this can be found in any biography of Jackson and his siblings: their father - steelworks crane operator and guitarist in a rhythm and blues band called the Falcons on the side - took the view that to spare the rod was to spoil the act.

The act was discovered by accident. Eight of Joe and Katherine's nine children were born in a span of 11 years at Gary, Indiana, a steel mill city on the southern shores of Lake Michigan. Joe's guitar was forbidden fruit, making it catnip for Tito, the second eldest son. He mastered playing it on the sly, until caught in the act by his father, who was surprised to learn Tito could make it work.

The family home was small, and the Jacksons made their own entertainment. There were family singalongs and three year-old Michael was discovered to have pipes and presence. Joe began to mould them into an act.

A gifted singing family was nothing exceptional back then, says Richard Hatcher, a lawyer and mayor of Gary at the time the Jacksons bloomed. "There were probably other groups in the city that had a lot of talent, but didn't have the kind of force of Joe Jackson," Hatcher says. "He was just very very determined."

-------------------------------------------------------------------------------------------------------------------------------------------------------------

Just how determined, the Jackson brothers were to testify. Beatings and humiliation accompanied any mistake in song or choreography. Joe visited Chicago clubs to find the best moves and install them at home. Rolling Stone described the scene in 1971: "On a count, each puts one hand on the left hip, the other hand lightly cupping the right ear, and gets the right leg stomping, highstep style - all, of course, in unison, until Michael breaks away to take the mike and put his own voice above the screams."

The Jacksons were well on the way by then, and Hatcher thinks he knows why.

Gary, he says, was one of the most racially segregated cities in America. His first law case involved a young black man beaten almost to death for venturing on to a whites-only beach on the shores of Lake Michigan.

This had been an unspoken part of Joe Jackson's life since 1950.

"I don't think it would have been possible for anyone to grow up in an environment such as that, a rigidly segregated environment, and basically have to put up with the insults and indignities that racial discrimination always brings and not be affected by it," Hatcher says. "I think Joe Jackson's family developed another kind of reaction: 'No matter what it takes, we'll do whatever we have to do to get out of this situation'. I think that was one of the driving factors in terms of Joe Jackson and the family itself."

And that became the epitaph for Michael Jackson's life, and Joe Jackson's role in it: "… no matter what it takes."

更新日期: 2009年2月

適用於: Windows Server 2008,Windows Vista