博文
身份证15To18 的算法(C#)(2009-01-12 16:37:00)
摘要:using System;using System.Threading;
namespace KeyboardRecord{/// <summary>/// Class1 的摘要说明。/// </summary>class Class1{/// <summary>/// 应用程序的主入口点。/// </summary>[STAThread]static void Main(string[] args){//// TODO: 在此处添加代码以启动应用程序//string a = Console.ReadLine();if (a.Length!=15) {Console.WriteLine("Please input correct idnumber");}else{Console.WriteLine(getCheckCode(a));}}static string getCheckCode(string sfzh){char[] strJiaoYan = {''1'', ''0'', ''X'', ''9'', ''8'', ''7'', ''6'', ''5'', ''4'', ''3'', ''2''};int[] intQuan = {7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2, 1};string strTemp;int intTemp = 0;strTemp = sfzh.Substring(0,6) + "19" + sfzh.Substring(6);for (int i=0;i<=strTemp.Length-1;i++){intTemp += int.Parse(strTemp.Substring(i,1))*intQuan[i];}intTemp = intTemp % 11;return strTemp + strJiaoYan[intTemp];}
}}......
对本站博客栏目功能项出现问题的修改建议(2009-01-12 10:48:00)
摘要:问题 描述 评价
第一个问题:数据生成速度 慢
第二个问题:新博客模板数据生成 糟糕
......
实现---万年历--功能样式源代码(2009-01-12 10:39:00)
摘要:<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><!-- saved from url=(0031)http://jxj.cmaya.com/wy/wjl.htm --><HTML><HEAD><TITLE>万年历查询表</TITLE><META content="农历; 万年历; 月历; 节日; 时区; 节气; 八字; 干支; 生肖; gregorian solar; chinese lunar; calendar;" name=keywords><META content=All name=robots><META content="gregorian solar calendar and chinese lunar calendar" name=description><META http-equiv=Content-Type content="text/html; charset=gb2312"><STYLE type=text/css>P { FONT-SIZE: 9pt; FONT-FAMILY: 宋体}TD { FONT-SIZE: 9pt; FONT-FAMILY: 宋体,simsun}A:link { COLOR: #000000; TEXT-DECORATION: none}A:visited { COLOR: #000000; TEXT-DECORATION: none}A:active { COLOR: green; TEXT-DECORATION: none}A:hover { COLOR: red; TEXT-DECORATION: underline}</STYLE>
<SCRIPT language=JavaScript><!--/*****************************************************************************  ......
触发器(2008-11-03 11:04:00)
摘要:
Ø一种特殊类型的存储过程,
Ø不同于存储过程。
Ø触发器主要是通过事件进行触发而被自动执行的
Ø存储过程可以通过存储过程名称而被直接调用。
注意:同类型的触发器在表上可以有多个
触发器作用
Ø禁止无效的修改
Ø级联修改相关表格
Ø执行较为复杂的约束操作
触发器类型
Øinsert 触发器
Ø delete 触发器
Ø update 解发器
创建格式
create trigger 触发器名 on 表名|视图名
[for|after|instead of]
[delete][,insert][,update]
as
sql语句组
例1:设计一个应用,每增加一个新学生,则打印消息“insert successful”
Create Trigger InsertTrigger
on stuInfo
for insert
as
print 'insert successful'
......
子查询(2008-11-03 10:58:00)
摘要: nIN引入的子查询 操作符IN,用来确定某个列值是否在内部查询的结果集中。 例:查询波士顿的供应商生产的产品名称和单 价。 首先,要知道哪些供应商是波士顿的,然后,通过波士顿的供应商编号查出相关的产品名称和单价。 SELECT ProductName , Unitprice FROM Products WHERE SupplierID IN (SELECT SupplierID FROM Suppliers WHERE City = 'Boston') 在操作符“IN”前可以加“NOT”取内部查询中相反的结果。 例:查询不是波士顿的供应商生产的产品信息。 SELECT ProductName , Unitprice FROM Products WHERE SupplierID NOT IN (SELECT SupplierID FROM Suppliers WHERE City = 'Boston') nEXISTS引入的子查询 EXISTS是测试子查询是否有数据行返回,如果有则返回TRUE,否则返回FALSE。NOT EXISTS 则相反,当结果表为空时,才返回TRUE。 例:查询波士顿的供应商生产的产品名 称和单价。 SELECT ProductName , Unitprice FROM Products WHERE EXISTS (SELECT SupplierID FROM Suppliers WHERE Products.SupplierID =Suppliers.SupplierID AND City = 'Boston') 例:使用“NOT EXISTS”查询不是波士顿的供应 商生产的产品名称和单价。 SELECT ProductName , Unitprice FROM Products WHERE NOT EXISTS (SELECT SupplierID FROM Suppliers WHERE Products.SupplierID =Suppliers.SupplierID AND City =......
.net_Ajax聊天室项目系列解读(Defalut.aspx.cs)(2008-10-31 17:31:00)
摘要:using System;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.Text;public partial class _Default : System.Web.UI.Page{ //获取当前在线用户的列表 protected void Timer2_Tick(object sender, EventArgs e) { StringBuilder sb = new StringBuilder("<ul>", 300);//输出的字符串对象 foreach (ChatUser user in Room.Instance.GetAllUsers())//遍历每个在线用户,构造出字符串 { string temp = Server.HtmlEncode(user.Name);//编码 sb.Append("<li><a href=\"#\" onclick=\"javascript:document.getElementById('mtowho').value='" + te......
.net_Ajax聊天室项目系列解读(Defalut.aspx)(2008-10-31 17:29:00)
摘要:<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head runat="server"> <title>Ajax 聊天室</title> <link href="./js/chat.css" rel="stylesheet" type="text/css" /></head><body> <form id="form1" runat="server"> <asp:ScriptManager ID="ScriptManager1" runat="server"> </asp:ScriptManager> <div> <h3> Ajax 聊天室演示</h3> &nbs......
.net_Ajax聊天室项目系列解读(web.config)(2008-10-31 17:29:00)
摘要:<?xml version="1.0"?><configuration> <configSections> <sectionGroup name="system.web.extensions" type="System.Web.Configuration.SystemWebExtensionsSectionGroup, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"> <sectionGroup name="scripting" type="System.Web.Configuration.ScriptingSectionGroup, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"> <section name="scriptResourceHandler" type="System.Web.Configuration.ScriptingScriptResourceHandlerSection, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="false" allowDefinition="MachineToApplication"/> <sectionGroup name="webServices" type="System.Web.Configuration.ScriptingWebServicesSectionGroup, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31b......
.net_Ajax聊天室项目系列解读(msg.cs)(2008-10-31 17:27:00)
摘要:using System;using System.Data;using System.Configuration;using System.Web;using System.Web.Security;//聊天消息类public class Msg{ private string _UserName = "系统";//消息发送者 private string _OtherName = "所有人";//消息接收者 private string _Message;//消息 private DateTime _DateTime;//发送时间 private string _Img = "";//表情图片 private string _IsBold = "0";//是否黑体(斜体) private string _Color = null;//消息的颜色 public DateTime DateTime//消息发送时间 { get { return this._DateTime; } } public string UserName//消息发送者 { get {&nbs......
.net_Ajax聊天室项目系列解读(User.cs)(2008-10-31 17:27:00)
摘要:using System;using System.Data;using System.Configuration;using System.Web;using System.Web.Security;using System.Web.UI;//聊天用户类public class ChatUser{ private string _Name;//账号 private string _Password;//密码 private DateTime lastUpdated;//上次更新时间 public ChatUser(string name, string password) { this._Name = name; this._Password = password; this.lastUpdated = DateTime.Now; } public string Name//账号 { get { return this._Name; } } public string Password//密码 { &nbs......
