程式設計 – 第 2 頁

PHP-利用str_pad() 補足字串

2013-07-302013-07-30 老王

string str_pad ( string $input , int $pad_length [, string $pad_string = " " [, int $pad_type = STR_PAD_RIGHT ]] )
$input= 來源字串
$pad_length= 要補到幾個字
$pad_string=要補什麼字
$pad_type=從哪裡開始補 1.左右都補:STR_PAD_BOTH ,2.由左邊開始補:STR_PAD_LEFT , 3.由右邊開始補:STR_PAD_RIGHT

<span id="lnum1" style="color: #606060;">   1:</span> <span style="color: #008000;">//要把ID 由左邊開始補0 ,補到5位數</span>

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						<span id="lnum1" style="color: #606060;">   1:</span> <span style="color: #008000;">//要把ID 由左邊開始補0 ,補到5位數</span>

<span id="lnum2" style="color: #606060;">   2:</span> $id=01;

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						<span id="lnum2" style="color: #606060;">   2:</span> $id=01;

<span id="lnum3" style="color: #606060;">   3:</span> $id=str_pad($id,5,<span style="color: #006080;">"0"</span>,STR_PAD_LEFT);

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						<span id="lnum3" style="color: #606060;">   3:</span> $id=str_pad($id,5,<span style="color: #006080;">"0"</span>,STR_PAD_LEFT);

<span id="lnum4" style="color: #606060;">   4:</span> <span style="color: #0000ff;">echo</span> $id;

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						<span id="lnum4" style="color: #606060;">   4:</span> <span style="color: #0000ff;">echo</span> $id;

<span id="lnum5" style="color: #606060;">   5:</span> <span style="color: #008000;">//00001</span>

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						<span id="lnum5" style="color: #606060;">   5:</span> <span style="color: #008000;">//00001</span>

PHP-字符尋找及置換程式

2013-07-302013-07-30 老王

利用 str_replace(目標字元,置換字元,來源字串)

<span id="lnum1" style="color: #606060">   1:</span> $myname = <span style="color: #006080">" Ja s o n "</span>;

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						<span id="lnum1" style="color: #606060">   1:</span> $myname = <span style="color: #006080">" Ja s o n "</span>;

<span id="lnum2" style="color: #606060">   2:</span> $myname = str_replace(<span style="color: #006080">" "</span>,<span style="color: #006080">""</span>,$myname);

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						<span id="lnum2" style="color: #606060">   2:</span> $myname = str_replace(<span style="color: #006080">" "</span>,<span style="color: #006080">""</span>,$myname);

<span id="lnum3" style="color: #606060">   3:</span> <span style="color: #0000ff">echo</span> $myname;

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						<span id="lnum3" style="color: #606060">   3:</span> <span style="color: #0000ff">echo</span> $myname;

PHP- 多圖型按鈕如何辨識點擊哪一個

2013-07-302013-07-30 老王

原始:

<input type="image" value="v1" src="image/query_ma.png">
<input type="image" value="v2" src="image/query_hr.png">

1 2	<input type="image" value="v1" src="image/query_ma.png"> <input type="image" value="v2" src="image/query_hr.png">

做法1:
增加name 為辨識基礎

<input type="image" name="q1" value="v1" src="image/query_ma.png">
<input type="image" name="q2" value="v2" src="image/query_hr.png">

1 2	<input type="image" name="q1" value="v1" src="image/query_ma.png"> <input type="image" name="q2" value="v2" src="image/query_hr.png">

判讀:
使用isset 判斷q1 不是有值,即可知是否點擊,若有,其值為 "v1"(value)

isset($_POST['q1'])

1	isset($_POST['q1'])

youtube 坎入影片自動播放語法 + 重複播放語法

2012-12-202012-12-20 老王

在 Youtube 分享影片要坎入自己的網頁或BLOG時,若要一載入就開始自動播放其實很簡單

1.先取得分享的網址

2012-08-25_000802

2.自動播放 :將語法貼到原始碼 ,並在 http://www.youtube.com/embed/-NaXkw0QbsI?rel=0 後面接上 &autoplay=1

即可

PS: rel=0 為結束不顯示其他影片連結

3.重複播放:將語法貼到原始碼 ,並在 http://www.youtube.com/embed/-NaXkw0QbsI?rel=0&autoplay=1 後面接上

&loop=1 即可

youtube 坎入影片自動播放語法 + 重複播放語法

2012-08-242012-08-24 老王 2 Comments

在 Youtube 分享影片要坎入自己的網頁或BLOG時,若要一載入就開始自動播放其實很簡單

1.先取得分享的網址

2012-08-25_000802

2.自動播放 :將語法貼到原始碼 ,並在 http://www.youtube.com/embed/-NaXkw0QbsI?rel=0 後面接上 &autoplay=1

即可

3.重複播放:將語法貼到原始碼 ,並在 http://www.youtube.com/embed/-NaXkw0QbsI?rel=0&autoplay=1 後面接上

&loop=1 即可

取得日期語法

2012-07-252012-07-25 老王

@ECHO OFF

for /F "tokens=1-4 delims=/ " %%i in ('date /t') do (
set DayOfWeek=%%l
set Month=%%j
set Day=%%k
set Year=%%i

set Date=%%i-%%j-%%k
)

ECHO Date is %Date%

Asp.Net Button 實現返回上一頁的功能

2012-01-062012-01-06 老王

在ASP.net中都是用一個button的控制項來實現的，
其實要實現這個功能主要還是要用到javascript
方法一：
Asp.Net

<span style="color: #0000ff"><</span><span style="color: #800000">input</span> <span style="color: #ff0000">type</span><span style="color: #0000ff">="button onclick="</span><span style="color: #ff0000">javascript:window</span>.<span style="color: #ff0000">history</span>.<span style="color: #ff0000">go</span>(<span style="color: #ff0000">-1</span>);<span style="color: #0000ff">"value="</span><span style="color: #ff0000">返回上一頁</span>"<span style="color: #0000ff">></span>

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						<span style="color: #0000ff"><</span><span style="color: #800000">input</span> <span style="color: #ff0000">type</span><span style="color: #0000ff">="button onclick="</span><span style="color: #ff0000">javascript:window</span>.<span style="color: #ff0000">history</span>.<span style="color: #ff0000">go</span>(<span style="color: #ff0000">-1</span>);<span style="color: #0000ff">"value="</span><span style="color: #ff0000">返回上一頁</span>"<span style="color: #0000ff">></span>

淺析：這個是用了HTML控制項，通過一個onclick的事件，調用了javascript中的一個方法就可以了。這個是最簡單的了，也同樣適用於靜態頁面,ASP頁面等。
方法二:
利用Reponse.write
如果你對ASP有一定的瞭解，那麼對Response.write這個東東就不會陌生了，方法一是直接有HTML頁面中實現，則這個則是在後臺環境中實現

Response.write("<script language=javascript>history.go(-2);</script>)

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						Response.write("<script language=javascript>history.go(-2);</script>)

OR Asp.Net

<span style="color: #0000ff"><</span><span style="color: #800000">a</span>   <span style="color: #ff0000">href</span><span style="color: #0000ff">="#"</span>   <span style="color: #ff0000">onclick</span><span style="color: #0000ff">="javascript:history.back();"</span><span style="color: #0000ff">></span>返回前一頁<span style="color: #0000ff"></</span><span style="color: #800000">a</span><span style="color: #0000ff">></span>

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						<span style="color: #0000ff"><</span><span style="color: #800000">a</span>   <span style="color: #ff0000">href</span><span style="color: #0000ff">="#"</span>   <span style="color: #ff0000">onclick</span><span style="color: #0000ff">="javascript:history.back();"</span><span style="color: #0000ff">></span>返回前一頁<span style="color: #0000ff"></</span><span style="color: #800000">a</span><span style="color: #0000ff">></span>

這裡為會麼要採用-2的值呢，我個人認為是這樣的：因為在asp.net中的頁面，當你按下一個button後，由於頁面中會實現page.postback的緣故，實際上在這其中是刷新了兩次頁面，我們要的是第一次的，所以就......

方法三
利用Response.Redirect() 或 server.transfer()

C# Page_Load

<span style="color: #0000ff">if</span>(!IsPostBack)   

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						<span style="color: #0000ff">if</span>(!IsPostBack)   

        ViewState[<span style="color: #006080">"UrlReferrer"</span>]=Request.UrlReferrer.ToString();   

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						        ViewState[<span style="color: #006080">"UrlReferrer"</span>]=Request.UrlReferrer.ToString();

C# 控制項事件

<span style="color: #0000ff">if</span>(ViewState[<span style="color: #006080">"UrlReferrer"</span>]!=<span style="color: #0000ff">null</span>)  Response.Redirect(ViewState[<span style="color: #006080">"UrlReferrer"</span>].ToString();

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						<span style="color: #0000ff">if</span>(ViewState[<span style="color: #006080">"UrlReferrer"</span>]!=<span style="color: #0000ff">null</span>)  Response.Redirect(ViewState[<span style="color: #006080">"UrlReferrer"</span>].ToString();

<span style="color: #0000ff">else</span> Response.write(<span style="color: #006080">"對不起，當前是最前頁"</span>);

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						<span style="color: #0000ff">else</span> Response.write(<span style="color: #006080">"對不起，當前是最前頁"</span>);

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以下這段來自:http://stswordman.cnblogs.com/archive/2006/06/12/423910.html
在使用Request.UrlReferrer時還要注意：
1. 如果上一頁面使用document.location方法導航到當前頁面，Request.UrlReferrer返回空值
2. 如果有A,B兩個頁面，在流覽器中直接請求A頁面，在A頁面的中Page_Load事件中導航到B 頁面，則 Request.UrlReferrer返回空。因為在Page_load事件中頁面還未初始化，所以無法記錄當前頁的資訊，導航到b頁面也就無法獲得上一頁面的資訊
3. 點擊刷新按鈕不會改變Request.UrlReferrer

方法四:
在button的onClick事件中輸入

<span style="color: #0000ff">this</span>.RegisterClientScriptBlock(<span style="color: #006080">"e"</span>, <span style="color: #006080">"<script language=javascript>history.go(-2);</script>"</span>);

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						<span style="color: #0000ff">this</span>.RegisterClientScriptBlock(<span style="color: #006080">"e"</span>, <span style="color: #006080">"<script language=javascript>history.go(-2);</script>"</span>);

方法五
這種方法也比較麻煩，不建議大家使用，這個好像是ASP裡面的。

<span style="color: #0000ff"><</span><span style="color: #800000">a</span> <span style="color: #ff0000">href</span>=&<span style="color: #ff0000">lt</span>;%=<span style="color: #ff0000">request</span>.<span style="color: #ff0000">servervariable</span>(<span style="color: #0000ff">"http_Referre)%>

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						<span style="color: #0000ff"><</span><span style="color: #800000">a</span> <span style="color: #ff0000">href</span>=&<span style="color: #ff0000">lt</span>;%=<span style="color: #ff0000">request</span>.<span style="color: #ff0000">servervariable</span>(<span style="color: #0000ff">"http_Referre)%>

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<asp:image id="</span><span style="color: #ff0000">imageback</span><span style="color: #0000ff">" visible = true"</span> <span style="color: #ff0000">imagurl</span><span style="color: #0000ff">="上一頁"</span> <span style="color: #ff0000">runat</span><span style="color: #0000ff">="server"</span><span style="color: #0000ff">/></</span><span style="color: #800000">a</span><span style="color: #0000ff">></span>

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						<asp:image id="</span><span style="color: #ff0000">imageback</span><span style="color: #0000ff">" visible = true"</span> <span style="color: #ff0000">imagurl</span><span style="color: #0000ff">="上一頁"</span> <span style="color: #ff0000">runat</span><span style="color: #0000ff">="server"</span><span style="color: #0000ff">/></</span><span style="color: #800000">a</span><span style="color: #0000ff">></span>

Asp.Net 偵測瀏覽器類型及版本

2012-01-062012-01-06 老王

今天突然發現用Gerybox 做的對話視窗 , 因為包了二層,結果造成在 IE下顯示一片空白 ,在 Chrome 卻是正常

找不出解決之道 , 想到最快暫時解決的方式就是改掉IE的第二層的架構,第一件事就是要先判讀出瀏覽器版本 !!

可依取出結果進行IF判斷進行不同的工作

HttpBrowserCapabilities hbc = Request.Browser;

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						HttpBrowserCapabilities hbc = Request.Browser;

Response.Write(hbc.Browser.ToString() + <span style="color: #006080">"<br/>"</span>); <span style="color: #008000">//取得瀏覽器名稱</span>

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						Response.Write(hbc.Browser.ToString() + <span style="color: #006080">"<br/>"</span>); <span style="color: #008000">//取得瀏覽器名稱</span>

Response.Write(hbc.Version.ToString() + <span style="color: #006080">"<br/>"</span>); <span style="color: #008000">//取得瀏覽器版本號</span>

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						Response.Write(hbc.Version.ToString() + <span style="color: #006080">"<br/>"</span>); <span style="color: #008000">//取得瀏覽器版本號</span>

Response.Write(hbc.Platform.ToString() + <span style="color: #006080">"<br/>"</span>);     <span style="color: #008000">//取得作業系統名稱</span>

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						Response.Write(hbc.Platform.ToString() + <span style="color: #006080">"<br/>"</span>);     <span style="color: #008000">//取得作業系統名稱</span>

Asp.Net iframe 應用

2012-01-052012-01-05 老王

1.配合 Menu 操作 iframe 內容

Asp.Net menu: 重點在 target 目標為 iframe 的 name 值

<span style="color: #0000ff"><</span><span style="color: #800000">asp:Menu</span> <span style="color: #ff0000">ID</span><span style="color: #0000ff">="Menu1"</span> <span style="color: #ff0000">runat</span><span style="color: #0000ff">="server"</span><span style="color: #0000ff">></span>

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						<span style="color: #0000ff"><</span><span style="color: #800000">asp:Menu</span> <span style="color: #ff0000">ID</span><span style="color: #0000ff">="Menu1"</span> <span style="color: #ff0000">runat</span><span style="color: #0000ff">="server"</span><span style="color: #0000ff">></span>

        <span style="color: #0000ff"><</span><span style="color: #800000">Items</span><span style="color: #0000ff">></span>

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						        <span style="color: #0000ff"><</span><span style="color: #800000">Items</span><span style="color: #0000ff">></span>

            <span style="color: #0000ff"><</span><span style="color: #800000">asp:MenuItem</span> <span style="color: #ff0000">NavigateUrl</span><span style="color: #0000ff">="target_url"</span> <span style="color: #ff0000">Target</span><span style="color: #0000ff">="iframe1"</span> <span style="color: #ff0000">Text</span><span style="color: #0000ff">="target"</span> 

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						            <span style="color: #0000ff"><</span><span style="color: #800000">asp:MenuItem</span> <span style="color: #ff0000">NavigateUrl</span><span style="color: #0000ff">="target_url"</span> <span style="color: #ff0000">Target</span><span style="color: #0000ff">="iframe1"</span> <span style="color: #ff0000">Text</span><span style="color: #0000ff">="target"</span> 

                <span style="color: #ff0000">Value</span><span style="color: #0000ff">="target"</span><span style="color: #0000ff">></</span><span style="color: #800000">asp:MenuItem</span><span style="color: #0000ff">></span>

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						                <span style="color: #ff0000">Value</span><span style="color: #0000ff">="target"</span><span style="color: #0000ff">></</span><span style="color: #800000">asp:MenuItem</span><span style="color: #0000ff">></span>

        <span style="color: #0000ff"></</span><span style="color: #800000">Items</span><span style="color: #0000ff">></span>

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						        <span style="color: #0000ff"></</span><span style="color: #800000">Items</span><span style="color: #0000ff">></span>

<span style="color: #0000ff"></</span><span style="color: #800000">asp:Menu</span><span style="color: #0000ff">></span>

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						<span style="color: #0000ff"></</span><span style="color: #800000">asp:Menu</span><span style="color: #0000ff">></span>

Asp.Net iframe: 一定要輸入 name 值

<span style="color: #0000ff"><</span><span style="color: #800000">IFRAME</span> <span style="color: #ff0000">id</span><span style="color: #0000ff">="iframe1"</span> <span style="color: #ff0000">name</span><span style="color: #0000ff">="iframe1"</span> <span style="color: #ff0000">src</span><span style="color: #0000ff">="default.html"</span> <span style="color: #ff0000">scrolling</span><span style="color: #0000ff">="auto"</span> <span style="color: #ff0000">runat</span>=<span style="color: #ff0000">server</span> 

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						<span style="color: #0000ff"><</span><span style="color: #800000">IFRAME</span> <span style="color: #ff0000">id</span><span style="color: #0000ff">="iframe1"</span> <span style="color: #ff0000">name</span><span style="color: #0000ff">="iframe1"</span> <span style="color: #ff0000">src</span><span style="color: #0000ff">="default.html"</span> <span style="color: #ff0000">scrolling</span><span style="color: #0000ff">="auto"</span> <span style="color: #ff0000">runat</span>=<span style="color: #ff0000">server</span> 

               <span style="color: #ff0000">height</span><span style="color: #0000ff">="500"</span> <span style="color: #ff0000">width</span><span style="color: #0000ff">="700"</span><span style="color: #0000ff">></span>

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						               <span style="color: #ff0000">height</span><span style="color: #0000ff">="500"</span> <span style="color: #ff0000">width</span><span style="color: #0000ff">="700"</span><span style="color: #0000ff">></span>

/IFRAME<span style="color: #0000ff">></span>

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						/IFRAME<span style="color: #0000ff">></span>

2.動態變更內容

同上 , 拉一個 iframe 進aspx 頁面裡

C# Page_Load 加入以下指令

<span style="color: #0000ff">protected</span> <span style="color: #0000ff">void</span> Page_Load(<span style="color: #0000ff">object</span> sender, EventArgs e)

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						<span style="color: #0000ff">protected</span> <span style="color: #0000ff">void</span> Page_Load(<span style="color: #0000ff">object</span> sender, EventArgs e)

   {

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						   {

       HtmlControl iframe1 = (HtmlControl)<span style="color: #0000ff">this</span>.FindControl(<span style="color: #006080">"iframe1"</span>);

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						       HtmlControl iframe1 = (HtmlControl)<span style="color: #0000ff">this</span>.FindControl(<span style="color: #006080">"iframe1"</span>);

   }

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						   }

在需要動態變更頁面的地方添加：

iframe1.Attributes[<span style="color: #006080">"src"</span>] = <a href="http://yourserver">http://yourserver</a>;

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iframe1.Attributes[<span style="color: #006080">"src"</span>] = <a href="http://yourserver">http://yourserver</a>;

動態變更 iframe 尺寸

iframe1.Attributes[<span style="color: #006080">"width"</span>] = <span style="color: #006080">"500px"</span>; 

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						iframe1.Attributes[<span style="color: #006080">"width"</span>] = <span style="color: #006080">"500px"</span>; 

iframe1.Attributes[<span style="color: #006080">"height"</span>] = <span style="color: #006080">"500px"</span>; 

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						iframe1.Attributes[<span style="color: #006080">"height"</span>] = <span style="color: #006080">"500px"</span>;

Asp.Net 十幾行程式碼搞定 Master-Detail GridView(內含子 GridView)

2012-01-042012-01-04 老王

一直都只有找到VB版 , 能力有限 , 修改不了

找這這篇C#版,好實用忍不住要把他記下來 ... 原文出處

步驟1.創造兩個GridView+SqlDataSource

步驟2.GridView1 的 RowDataBound 事件撰寫下面

<span style="color: #0000ff">protected</span> <span style="color: #0000ff">void</span> GridView1_RowDataBound(<span style="color: #0000ff">object</span> sender, GridViewRowEventArgs e)

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						<span style="color: #0000ff">protected</span> <span style="color: #0000ff">void</span> GridView1_RowDataBound(<span style="color: #0000ff">object</span> sender, GridViewRowEventArgs e)

{

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						{

    <span style="color: #0000ff">if</span> ((e.Row.RowState & DataControlRowState.Selected) == DataControlRowState.Selected)

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						    <span style="color: #0000ff">if</span> ((e.Row.RowState & DataControlRowState.Selected) == DataControlRowState.Selected)

      {

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						      {

        GridViewRow oRow = <span style="color: #0000ff">new</span> GridViewRow(0, -1, DataControlRowType.DataRow, e.Row.RowState);

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						        GridViewRow oRow = <span style="color: #0000ff">new</span> GridViewRow(0, -1, DataControlRowType.DataRow, e.Row.RowState);

        GridView2.Visible = <span style="color: #0000ff">true</span>;

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						        GridView2.Visible = <span style="color: #0000ff">true</span>;

        GridView2.DataBind();

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						        GridView2.DataBind();

        <span style="color: #0000ff">string</span> sHTML = ControlToHTML(GridView2);

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						        <span style="color: #0000ff">string</span> sHTML = ControlToHTML(GridView2);

        GridView2.Visible = <span style="color: #0000ff">false</span>;

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						        GridView2.Visible = <span style="color: #0000ff">false</span>;

        TableCell oCell = <span style="color: #0000ff">new</span> TableCell();

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						        TableCell oCell = <span style="color: #0000ff">new</span> TableCell();

        oCell.Text = sHTML;

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						        oCell.Text = sHTML;

        oCell.ColumnSpan = e.Row.Cells.Count;

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						        oCell.ColumnSpan = e.Row.Cells.Count;

        oRow.Cells.Add(oCell);

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						        oRow.Cells.Add(oCell);

        e.Row.Parent.Controls.AddAt(e.Row.RowIndex + 2, oRow);

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						        e.Row.Parent.Controls.AddAt(e.Row.RowIndex + 2, oRow);

    }

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						    }

}

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						}

步驟3加入兩段小小程式碼不然不會動

<span style="color: #0000ff">private</span> <span style="color: #0000ff">string</span> ControlToHTML(System.Web.UI.Control Control)

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						<span style="color: #0000ff">private</span> <span style="color: #0000ff">string</span> ControlToHTML(System.Web.UI.Control Control)

{

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						{

    <span style="color: #0000ff">string</span> sHTML = <span style="color: #0000ff">string</span>.Empty;

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						    <span style="color: #0000ff">string</span> sHTML = <span style="color: #0000ff">string</span>.Empty;

    StringWriter oTextWriter = <span style="color: #0000ff">new</span> StringWriter();

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						    StringWriter oTextWriter = <span style="color: #0000ff">new</span> StringWriter();

    HtmlTextWriter oHtmlWriter = <span style="color: #0000ff">new</span> HtmlTextWriter(oTextWriter);

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						    HtmlTextWriter oHtmlWriter = <span style="color: #0000ff">new</span> HtmlTextWriter(oTextWriter);

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    Control.RenderControl(oHtmlWriter);

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						    Control.RenderControl(oHtmlWriter);

    sHTML = Convert.ToString(oTextWriter);

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						    sHTML = Convert.ToString(oTextWriter);

    <span style="color: #0000ff">return</span> sHTML;

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						    <span style="color: #0000ff">return</span> sHTML;

}

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						}

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<span style="color: #0000ff">public</span> <span style="color: #0000ff">override</span> <span style="color: #0000ff">void</span> VerifyRenderingInServerForm(Control control)

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						<span style="color: #0000ff">public</span> <span style="color: #0000ff">override</span> <span style="color: #0000ff">void</span> VerifyRenderingInServerForm(Control control)

{}

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						{}

步驟4.在原始檔部分設定一下屬性
設定 GridView1的 EnableViewState="False"
設定 GridView2的 EnableViewState="False"，且設定 Visible="False"
Page 的 EnableEventValidation="false"
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default6.aspx.cs" Inherits="Default6" EnableEventValidation="false" %>

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