作者查詢 / MOONRAKER
作者 MOONRAKER 在 PTT [ Visual_Basic ] 看板的留言(推文), 共3665則
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1F→:有,請參考google chart tools04/30 23:32
2F→:http://goo.gl/Vt6Mf 不過你寫的要是網路程式才行…04/30 23:34
2F→:... & ', null ,' & ... 這樣不就得了04/29 18:05
3F→:還有.NET有String.Format() 快別再用這種&到死的寫法吧04/29 18:06
5F→:冏 我只是想說他還是拼字串不是用SqlCommand和Parameter04/29 18:30
6F→:而拼字串的話在對應欄位塞一個null應該就可以了…04/29 18:30
9F→:不行吧,' '是字串,應該會轉換為1900-1-104/30 23:28
10F→:''也是一樣的問題,他是空字串,不是null04/30 23:28
11F→:MS SQL對null的規定,就我碰到的,龜毛到令人髮指04/30 23:29
12F→:所以在這裡題外呼籲(1)select的時候多用isnull()函數04/30 23:29
13F→:(2)設計資料表時儘可能取個default值,或限制不可為null04/30 23:30
14F→:當然你若早有計畫用null代表不存在,就不在此限04/30 23:30
17F→:... isnull()是select的時候用的 isnull(field, value)05/01 16:51
18F→:意思是說field如果為null 就自動轉成value05/01 16:51
19F→:插入isnull…你面談的時候敢這樣寫就不要給我改到。05/01 16:52
4F→:command<k>_click 多寫幾次不就得了。04/29 15:35
7F→:他不是說這樣不行…可能command1裡面有寫了什麼特別的。04/30 23:27
1F→:使用RegularExperssion建一個 st.*bmp 的 regex04/27 17:07
2F→: .* 表示任意字串,或你也可用instrrev()搜尋最後的 /04/27 17:08
3F→:再substring()取出即可04/27 17:08
3F→:非常深奧。04/27 14:46
1F→:請學一下SQL怎麼用04/25 16:50
12F→:都有資料庫了,幹嘛放棄大好的SQL不用。不然請學姊罩吧04/26 10:06
4F→:上課不認真的結果+104/23 23:17
15F→:你太誇張了!那都看不懂就再修一次吧!04/25 09:46
3F→:就不要用inputbox,直接取出溫度textbox的text屬性計算04/23 23:15
4F→:再用label輸出不就得了04/23 23:15
6F→:阿就去專案裡面看哪裡有d:\都改成c:\不就結了04/23 23:16
1F→:應該是第二個太簡單了所以不準用04/23 08:04
2F→:都會讀取檔案後先產生一個無名Image再指定給PictureBox04/23 08:05