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作者：中国IT实验室 来源：中国IT实验室 2007年10月2日
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把常用的sql方法写成一个类，看起来非常清晰，功能简单。大家常用的的SqlHelper类既有存储过程又有sql语句实现的方法，让新手一看就晕(我现在偶尔晕晕)~~
通用函数类（字符串处理等）
namespace IndiaStudyChannel.Utils
{
/**//// <summary>
/// Summary description for Utils. /// </summary> /// 由 liudao 翻译整理
/// 该源码下载自www.51aspx.com(５１ａｓｐｘ．ｃｏｍ) public class Utils { public Utils() { } /**//// <summary> /// This method removes some dangerous characters from the word to avoid 'Sql Injection attack'. /// </summary> /// <param name="s"></param> /// <returns></returns> public static string MakeSafeWord(string s) { if ( s == null ) return ""; return s.Replace("'", "").Replace("--", ""); } /**//// <summary> /// This method checks if the passed user id is an adinistrator or if this is same as current user. /// </summary> /// <param name="userId"></param> /// <returns></returns> public static bool IsOwner(object userId) { if ( System.Web.HttpContext.Current.Session["CurrentUser"] == null ) { // There is no userid saved in session. This means user has not logged in. return false; } // Get current user from session. string currentUser = System.Web.HttpContext.Current.Session["CurrentUser"].ToString(); // Get the admin user id from config file. string adminUser = System.Configuration.ConfigurationSettings.AppSettings["AdminUser"]; if ( currentUser == adminUser ) { // Current user is an administrator. Administrator is Owner for all submissions. return true; } if ( userId != null && userId.ToString() == currentUser ) { // Current user is same as the userId passed. return true; } return false; } /**//// <summary> /// This method checks if the passed user id is an adinistrator or if this is same as current user. /// </summary> /// <param name="userId"></param> /// <returns></returns> public static bool IsAdministrator() { if ( System.Web.HttpContext.Current.Session["CurrentUser"] == null ) { // There is no userid saved in session. This means user has not logged in. return false; } // Get current user from session. string currentUser = System.Web.HttpContext.Current.Session["CurrentUser"].ToString(); // Get the admin user id from config file. string adminUser = System.Configuration.ConfigurationSettings.AppSettings["AdminUser"]; if ( currentUser == adminUser ) { // Current user is an administrator. Administrator is Owner for all submissions. return true; } return false; } public static string FormatFileName(string s) { char[] chars = {'#', '@', '?', ':', '\'', '\"', '.', '/', '\\', ' ', '<', '>', '&', '*', '(', ')', '!', ',', ';', ':', '-', '+', '='}; foreach (char c in chars) { s = s.Replace(c, '-'); } s = s.Replace(" ", "-"); s = s.Replace("--", "-"); if ( s.LastIndexOf("-") == (s.Length - 1) && s.Length > 2 ) { s = s.Substring(0, s.Length - 1); } return s; } }} protected void Page_Load(object sender, System.EventArgs e) { string query = "Select UserId, Name, Email, DateJoined from Members"; dg.DataSource = Utils.DataManager.ExecuteQuery(query); dg.DataBind();
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