using?System;
using?System.Data;
using?System.Configuration;
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.Regularexpressions;
using?System.Text;
///?

///?Common?的摘要說(shuō)明
///?

public?class?Common
{
	public?Common（）
	{
		//
		//?TODO:?在此處添加構(gòu)造函數(shù)邏輯
		//
	}

????#region?SHA1加密函數(shù)
????public?static?string?SHA1（string?source）???
????{???
????????return?FormsAuthentication.HashPasswordForStoringInConfigFile（source?“SHA1“）;???
????}?
????#endregion

????#region?SQL防蛀函數(shù)
????public?static?string?UrnHtml（string?strHtml）
????{
????????strHtml?=?strHtml.Replace（“‘“?“＇“）.Replace（“.“?“．“）.Replace（“%“?“％“）.Replace（“-“?“－“）.Replace（“<“?“?“）;
????????return?strHtml;
????}
????#endregion

????#region?過(guò)濾字符串中所有的html標(biāo)簽
????public?static?string?checkStr（string?text）
????{
????????text?=?text.Trim（）;
????????if?（string.IsNullOrEmpty（text））
????????????return?string.Empty;
????????text?=?Regex.Replace（text?“[\\s]{2}“?“?“）;?//兩個(gè)或多個(gè)空格替換為一個(gè)
????????text?=?Regex.Replace（text?“（<[b|B][r|R]/*>）+|（<[p|P]（.|\\n）*?>）“?“\n“）;?//

????????text?=?Regex.Replace（text?“（\\s*&[n|N][b|B][s|S][p|P];\\s*）+“?“?“）;?// 
????????text?=?Regex.Replace（text?“<（.|\\n）*?>“?string.Empty）;?//其它任何標(biāo)記
????????text?=?text.Replace（“‘“?“‘‘“）;
????????return?text;
????}//過(guò)濾字符串中所有的標(biāo)簽代碼，如?
等
????#endregion

????#region?字符串截取函數(shù)
????public?static?string?subString（string?str?int?length）
????{
????????string?tmpStr?=?str;
????????int?strLength?=?length;
????????if?（str.Length?>?strLength）
????????{
????????????tmpStr?=?str.Substring（0?strLength）;

????????}
????????return?tmpStr;
????}//截取從字符串開(kāi)始位置到指定位置的字符
????#endregion

????#region?截取字符串函數(shù)

????#region?截取字符串函數(shù)
????///?

????///?截取字符串函數(shù)
????///?

????///?所要截取的字符串
????///?截取字符串的長(zhǎng)度（0則不判斷）
????///?
????public?static?string?GetSubString（object?str?int?num）
????{
????????return?GetSubString（str.ToString（）?num）;
????}
????#endregion

????///?

????///?截取字符串函數(shù)
????///?

????///?所要截取的字符串
????///?截取字符串的長(zhǎng)度（0則不判斷）
????///?后綴字符（如：..）
????///?
????public?static?string?GetSubString（string?str?int?num?string?laststr）
????{
????????//if?（num?>?0）
????????//{
????????//????return?（RemoveHTML（str）.Length?>?num）???（RemoveHTML（str）.Substring（0?num））?:?str;
????????//}
????????//else
????????//{
????????//????return?str;
????????//}

????????if?（Encoding.UTF8.GetByteCount（str）?<=?num?*?2）
????????{
????????????return?str;
????????}
????????ASCIIEncoding?ascii?=?new?ASCIIEncoding（）;
????????int?tempLen?=?0;
????????string?tempString?=?““;
????????byte[]?s?=?ascii.GetBytes（

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件?????989950??2012-04-24?18:47??揚(yáng)州職業(yè)大學(xué)圖書借閱管理系統(tǒng)錄像.exe

-----------?---------??----------?-----??----

???????????????989950????????????????????1