.net中枚舉其實就是數值型的常量,與const類似。當我們在代碼中使用枚舉代表的數值或者常量時,編譯器其實是將該值直接寫過來,而不會在啟動並執行時候去讀取該值。下面是一個例子:我們想建立一個類庫項目,名稱叫A,再建立一個控制台項目,名稱叫Test,結構如下: A項目中的 MyClass.cs的代碼: public class MyClass { public static string str1="str1"; public const string
問題起源於:有一個實體類,裡面有個string的屬性,比如這樣Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> class Demo {public string str { get; set; } } Demo d = new Demo(); d.str += "xxxxx";執行個體化後直接對str屬性進行加法操作,
我們先來看同步發送郵件的代碼代碼Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> SmtpClient _SmtpClient = new SmtpClient(); _SmtpClient.Host = "郵件伺服器"; _SmtpClient.Credentials = new
第一題:找出1000內能被3或5整除的所有數的總和。第一反應是,迴圈,判斷是否能被3或5整除,能的話就加到一個變數中,代碼如下: static void p1_1() { int max = 1000; int sum = 0; for (int i = 1; i < max; i++) { if (i % 3==0 || i % 5==0)
文章目錄 Playing Video on the iPhonePlaying Video on the iPadPlaying Full Screen Movie for iPadSummary This article discusses the two classes supported in the iPhone SDK for video playback. by Wei-Meng Lee Playing videos is
Hello,I would to play a video file in my iphone. Everything works fine but the result video does not show the volume control (I can listen audio!).What's wrong?This is the code (an example project is here:
我想大家在剛剛接觸Objective-C的時候都做過貨幣轉換器,那個轉換器的匯率在程式內部就已經做定了,編譯後不能修改,可是匯率是會變的。既然如此,不如我們試試做一個線上貨幣轉換器吧。這個程式換算所需要的匯率都由服務器提供,這樣就不會出現匯率無法更新的問題了。我在網上看到了一個網頁,地址是http://www.google.com/ig/calculator?hl=en&q=100CNY%3D%3FUSD。網頁的內容是:{lhs: "100 Chinese yuan",rhs: "14.
From rajeev karamchedu Drawing Pie Charts using iPhone SDKHere’s one way to draw a PIE chart using the latest iPhone SDK. There are a ton of tutorials out there that let you get started with the iPhone app development itself and I am by no means any