前段時間工作比較忙,沒時間讀代碼,這幾天有空,正好又來靜讀代碼了.在Menus_ascx中我們看到用了緩衝自訂字串"authenticated"<%@ OutputCache Duration="86400" VaryByParam="None" VaryByCustom="authenticated" %>注意: @OutputCache 指令與必需的 Duration 和 VaryByParam 屬性包括在一起。必須將 Duration 屬性設定為大於零的任意整數。如果不想使用
聲明，不是替DevExpress的控制項做廣告！雖然她的控制項真的漂亮。DevExpress 的 TreeList
最近比較關注C#書寫出來的代碼效能問題，越研究就越覺得很有意思。在日常的編程過程總，由於編程需要，我們經常會比較兩個字串是否相等，然後再做相應的處理。代碼書寫起來是覺得很爽，不是嗎？if (a==b) then ……else……但是有沒有更快的方式呢？為此查閱了一些資料了MSDN文檔。當我們調用 a==b的時候，通過IL代碼可以看到內部實際上調用了String.Equals(string,string)這個方法IL_0021: call bool [mscorlib]System.
Static methods can not be called remotely The client application can not access to static methods / properties / fields remotely. Since you access a static method using CLASSNAME.STATICMETHOD, instead of OBJREF.STATICMETHOD, there’s no proxy
在MSDN介紹LINQ的時候，在開篇的時候介紹了如何使用LINQ，並使用以下代碼舉例： 1class StartWithLINQ { 2 static int[] numbers = new Int32[7] { 0, 1, 2, 3, 4, 5, 6 }; 3 public StartWithLINQ() { 4 var numberQuery = 5 from x in numbers 6
void Page_Load(object sender, EventArgs e) { //測試資料 string[] myArr = new string[6]; myArr[0] = "地區"; myArr[1] = "地図"; myArr[2] = "路線"; myArr[3] = "道路交通"; myArr[4] = "電話帳"; myArr[5] = "自動車";
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[customer_s]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)drop table [dbo].[customer_s]GOCREATE TABLE [dbo].[customer_s] ( [customer_id] INT, [account_num] [float] NULL , [
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><HTML><HEAD></HEAD><script>/*@cc_on @*//*@if (@_jscript_version >= 4){ var s = "" s += "@_win32 ="+@_win32; s += "<br>@_win16 ="+@_win16; s
create procedure dbo.usp_backup_database@p_dbname varchar(50), -- 備份資料庫名稱@p_type varchar(50), -- 備份類型，full or log@p_file varchar(200), -- 備份檔案地址@p_password varchar(50) = '' -- 備份密碼asdeclare @sql_backup varchar(1000)declare @s
是否支援多句查詢http://www.xxx.com/xxxnews/shownews.asp?id=51;declare @a int-- 是否支援子查詢http://www.xxx.com/xxxnews/shownews.asp?id=51 and (Select count(1) from [sysobjects])>=0返回使用者名稱http://www.xxx.com/xxxnews/shownews.asp?id=51 And
//方法一function DayNumOfMonth(Year,Month){ var d = new Date(Year,Month,0); return d.getDate();}//方法二function DayNumOfMonth(Year,Month){ Month--; var d = new Date(Year,Month,1); d.setDate(d.getDate()+32-d.getDate()); return (32-d.getDa
<HTML><HEAD><TITLE> Regex測試 </TITLE></HEAD><BODY><TABLE><TR> <TD>Regex</TD> <TD><TEXTAREA NAME="reg" ROWS="4" COLS="40"></TEXTAREA></TD></TR><TR>
SELECT *的效率很糟糕嗎？當然，所有人都知道這一點，但是為什麼呢？是因為返回了太多的資料？這是一個普遍的回答，但我不這樣認為。如果你的資料庫設計規範合理，那麼頻寬佔用實際上非常的小。讓我們看看下面的例子。下面的查詢將會從AdventureWorks.dbo.TransactionHistoryArchive（總共大約有近9萬行資料）中選擇出326行資料。第一個使用了SELECT *
DECLARE @a table(i int)DECLARE @b table(i int)INSERT INTO @a SELECT 1 UNION ALL SELECT 2INSERT INTO @b SELECT 1 UNION ALL SELECT 3SELECT a.i,b.i FROM @a AS a INNER JOIN @b AS b ON a.i =b.iSELECT a.i,b.i FROM @a AS a LEFT JOIN @b AS b ON a.i =b.iSELEC
<html><script>function Page_Load(){ setTimeout("UpdatemyQQ()",1500);}function UpdatemyQQ(){ document.all.myQQ.src="http://icon.qq.com/4480911/l/07/?"+Math.random(); setTimeout("UpdatemyQQ()",1500);}</script><body
在SQL Server 2000 裡，你可能在刪除表或更新一個表的索引，會收到下面的錯誤提示：錯誤
剛玩了一下,不錯.最大的好處就是支援本地化了.可以直接用中文了!Update: New feature list: Cross-browser support (Mozilla 1.3+, PC/IE 5+) Button/DropDown feedback Localization (create your own language files) Inline toolbar customization Back button support in IE Office 2003 Style
WindowsXP可以無限次啟用的號碼:CXGDD-GP2B2-RKWWD-HG3HY-VDJ7J或者RK7J8-2PGYQ-P47VV-V6PMB-F6XPQ WindowsXP 2520 Pro 英文版－－60天免啟用序號：RK7J8-2PGYQ-P47VV-V6PMB-F6XPQ Windows XP 2505 RC1－－序號：DTWB2-VX8WY-FG8R3-X696T-66Y46 Q3R8Y-MP9KD-3M6KB-383YB-7PK9Q 411Y0-URB45-34R3B-3
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