using?System;
using?System.Collections.Generic;
using?System.Linq;
using?System.Web;
using?System.Web.UI;
using?System.Web.UI.WebControls;

using?System;
using?System.Collections.Generic;
using?System.Web;
using?System.Web.UI;
using?System.Web.UI.WebControls;
using?System.Drawing;

public?partial?class?CreateCode?:?System.Web.UI.Page
{
????private?string?RndNum（）?????????????????????????????//隨機生成驗證碼
????{
????????int?number;
????????char?code;
????????string?checkCode?=?String.Empty;????????????????//表示空字符串。?此字段為只讀。
????????System.Random?random?=?new?Random（）;????????????//表示偽隨機數生成器，一種能夠產生滿足某些隨機性統計要求的數字序列的設備。
????????for?（int?i?=?0;?i?????????{
????????????number?=?random.Next（）;?????????????????????//返回非負隨機數。
????????????if?（number?%?2?==?0）
????????????????code?=?（char）（‘0‘?+?（char）（number?%?10））;
????????????else
????????????????code?=?（char）（‘A‘?+?（char）（number?%?26））;
????????????checkCode?+=?code.ToString（）;
????????}
????????Session[“CheckCode“]?=?checkCode;
????????return?checkCode;
????}

????private?void?CreateCheckCodeImage（string?checkCode）//將驗證碼生成圖片
????{

????????if?（checkCode?==?null?||?checkCode.Trim（）?==?String.Empty）
????????????return;
????????System.Drawing.Bitmap?image?=?new?System.Drawing.Bitmap（（int）Math.Ceiling（checkCode.Length?*?12.5）?22）;

????????//封裝?GDI+?位圖，此位圖由圖形圖像及其屬性的像素數據組成。Bitmap?是用于處理由像素數據定義的圖像的對象。
????????//Ceiling（Decimal）????返回大于或等于指定的十進制數的最小整數值。
????????//Ceiling（Double）????返回大于或等于指定的雙精度浮點數的最小整數值。

????????Graphics?g?=?Graphics.FromImage（image）;

????????//Graphics.FromImage從指定的?Image?創建新的?Graphics。
????????//Graphics?類?封裝一個?GDI+?繪圖圖面。此類不能被繼承。Graphics?類提供將對象繪制到顯示設備的方法。
????????//使用?FromImage?方法從圖像創建?Graphics?對象.

????????try
????????{
????????????Random?random?=?new?Random（）;
????????????g.Clear（Color.White）;

????????????//Clear????清除整個繪圖面并以指定背景色填充。

????????????for?（int?i?=?0;?i?????????????{
????????????????int?x1?=?random.Next（image.Width）;//返回大于等于零且小于?MaxValue?的?32?位帶符號整數。
????????????????int?x2?=?random.Next（image.Width）;
????????????????int?y1?=?random.Next（image.Height）;
????????????????int?y2?=?random.Next（image.Height）;
????????????????g.DrawLine（new?Pen（Color.Silver）?x1?y1?x2?y2）;

????????????????//DrawLine（Pen?Int32?Int32?Int32?Int32）????繪制一條連接由坐標對指定的兩個點的線條。
????????????????//DrawLine（Pen?Single?Single?Single?Single）????繪制一條連接由坐標對指定的兩個點的線條。
????????????????//Pen，它確定線條的顏色、寬度和樣式。

????????????}
????????????Font?font?=?new?System.Drawing.Font（“Arial“?12?（System.Drawing.Fontstyle.Bold?|?System.Drawing.Fontstyle.Italic））;
????????????System.Drawing.Drawing2D.LinearGradientBrush?brush?=?new?System.Drawing.Drawing2D.LinearGradientBrush（new?Rectangle（0?0?image.Width?image.Height）?Color.Blue?Color.DarkRed?1.2f?true）;

????????????//LinearGradientBrush?類使用線性漸變封裝?Brush。?無法繼承此類。
????????????//LinearGradientBrush（Rectangle?Color?Color?Single?Boolean）根據矩形、起始顏色和結束顏色以及方向角度，創建?LinearGradient

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2015-02-26?18:06??SuperMarketManageSystem\
?????文件????????2639??2015-01-22?04:34??SuperMarketManageSystem\about.html
?????目錄???????????0??2015-01-19?18:24??SuperMarketManageSystem\Admin\
?????文件????????2304??2015-01-21?23:38??SuperMarketManageSystem\Admin\changePassword.aspx
?????文件????????1318??2015-01-19?21:03??SuperMarketManageSystem\Admin\changePassword.aspx.cs
?????文件????????4125??2015-01-30?17:31??SuperMarketManageSystem\Admin\EmployeeInfoAdd.aspx
?????文件????????2422??2015-01-22?05:38??SuperMarketManageSystem\Admin\EmployeeInfoAdd.aspx.cs
?????文件?????????465??2015-01-19?18:46??SuperMarketManageSystem\Admin\EmployeeInfoDel.aspx
?????文件????????1044??2015-01-22?05:45??SuperMarketManageSystem\Admin\EmployeeInfoDel.aspx.cs
?????文件????????3774??2015-01-30?17:43??SuperMarketManageSystem\Admin\EmployeeInfoUpdate.aspx
?????文件????????4281??2015-01-16?01:09??SuperMarketManageSystem\Admin\EmployeeInfoUpdate.aspx.cs
?????文件????????3995??2015-01-16?03:29??SuperMarketManageSystem\Admin\EmployeeManage.aspx
?????文件????????2702??2015-01-15?06:01??SuperMarketManageSystem\Admin\EmployeeManage.aspx.cs
?????文件????????1892??2015-01-19?04:10??SuperMarketManageSystem\Admin\index.aspx
?????文件?????????412??2015-01-13?09:14??SuperMarketManageSystem\Admin\index.aspx.cs
?????文件????????7356??2015-02-02?14:24??SuperMarketManageSystem\Admin\seltime.aspx
?????文件????????3647??2015-01-23?01:13??SuperMarketManageSystem\Admin\SupplierManage.aspx
?????文件????????1650??2015-01-18?00:54??SuperMarketManageSystem\Admin\SupplierManage.aspx.cs
?????目錄???????????0??2015-01-20?15:29??SuperMarketManageSystem\App_Code\
?????目錄???????????0??2015-01-15?17:42??SuperMarketManageSystem\App_Code\Logic\
?????文件????????3120??2015-01-19?17:15??SuperMarketManageSystem\App_Code\Logic\AdminLogic.cs
?????文件????????6297??2015-01-22?06:09??SuperMarketManageSystem\App_Code\Logic\BuyBackInfoLogic.cs
?????文件????????5505??2015-03-07?12:21??SuperMarketManageSystem\App_Code\Logic\BuyInfoLogic.cs
?????文件????????1688??2015-01-18?02:35??SuperMarketManageSystem\App_Code\Logic\EducationLogic.cs
?????文件???????23016??2015-01-30?17:07??SuperMarketManageSystem\App_Code\Logic\EmployeeLogic.cs
?????文件???????10734??2015-01-18?15:25??SuperMarketManageSystem\App_Code\Logic\GoodCartLogic.cs
?????文件????????3485??2015-01-13?09:05??SuperMarketManageSystem\App_Code\Logic\GoodClassLogic.cs
?????文件????????7149??2015-03-07?12:20??SuperMarketManageSystem\App_Code\Logic\GoodLogic.cs
?????文件????????1918??2015-01-13?10:53??SuperMarketManageSystem\App_Code\Logic\GoodStockLogic.cs
?????文件????????6037??2015-01-22?01:08??SuperMarketManageSystem\App_Code\Logic\SellBackLogic.cs
?????文件????????6456??2015-01-18?18:11??SuperMarketManageSystem\App_Code\Logic\SellLogic.cs
............此處省略125個文件信息