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;namespace Byecity2011.WebSite.Utils{ /// <summary> /// 生成随机码类 /// </summary> public class RandomObj { /// <summary> /// /// </summary> public RandomObj() { } #region 数字随机数 /// <summary> /// 数字随机数 /// </summary> /// <param name="n">生成长度</param> /// <returns></returns> public static string RandNum(int n) { char[] arrChar = new char[] { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9' }; StringBuilder num = new StringBuilder(); Random rnd = new Random(DateTime.Now.Millisecond); for (int i = 0; i < n; i++) { num.Append(arrChar[rnd.Next(0, 9)].ToString()); } return num.ToString(); } #endregion #region 数字和字母随机数 /// <summary> /// 数字和字母随机数 /// </summary> /// <param name="n">生成长度</param> /// <returns></returns> public static string RandCode(int n) { char[] arrChar = new char[]{ 'a','b','d','c','e','f','g','h','i','j','k','l','m','n','p','r','q','s','t','u','v','w','z','y','x', '0','1','2','3','4','5','6','7','8','9', 'A','B','C','D','E','F','G','H','I','J','K','L','M','N','Q','P','R','T','S','V','U','W','X','Y','Z' }; StringBuilder num = new StringBuilder(); Random rnd = new Random(DateTime.Now.Millisecond); for (int i = 0; i < n; i++) { num.Append(arrChar[rnd.Next(0, arrChar.Length)].ToString()); } return num.ToString(); } #endregion #region 字母随机数 /// <summary> /// 字母随机数 /// </summary> /// <param name="n">生成长度</param> /// <returns></returns> public static string RandLetter(int n) { char[] arrChar = new char[]{ 'a','b','d','c','e','f','g','h','i','j','k','l','m','n','p','r','q','s','t','u','v','w','z','y','x', '_', 'A','B','C','D','E','F','G','H','I','J','K','L','M','N','Q','P','R','T','S','V','U','W','X','Y','Z' }; StringBuilder num = new StringBuilder(); Random rnd = new Random(DateTime.Now.Millisecond); for (int i = 0; i < n; i++) { num.Append(arrChar[rnd.Next(0, arrChar.Length)].ToString()); } return num.ToString(); } #endregion #region 日期随机函数 /// <summary> /// 日期随机函数 /// </summary> /// <param name="ra">长度</param> /// <returns></returns> public static string DateRndName(Random ra) { DateTime d = DateTime.Now; string s = null, y, m, dd, h, mm, ss; y = d.Year.ToString(); m = d.Month.ToString(); if (m.Length < 2) m = "0" + m; dd = d.Day.ToString(); if (dd.Length < 2) dd = "0" + dd; h = d.Hour.ToString(); if (h.Length < 2) h = "0" + h; mm = d.Minute.ToString(); if (mm.Length < 2) mm = "0" + mm; ss = d.Second.ToString(); if (ss.Length < 2) ss = "0" + ss; s += y + m + dd + h + mm + ss; s += ra.Next(100, 999).ToString(); return s; } #endregion #region 生成GUID /// <summary> /// 生成GUID /// </summary> /// <returns></returns> public static string GetGuid() { System.Guid g = System.Guid.NewGuid(); return g.ToString(); } #endregion #region 生成随机密码，发送密码时调用该方法 /// <summary> /// 生成随机密码，发送密码时调用该方法 /// </summary> /// <param name="pwdchars">指定生成的随机密码串可以使用哪些字符</param> /// <param name="pwdlen">指定生成的随机密码串的长度</param> /// <returns></returns> public static string MakePassword(string pwdchars, int pwdlen) { string tmpstr = ""; int iRandNum; Random rnd = new Random(); for (int i = 0; i < pwdlen; i++) { iRandNum = rnd.Next(pwdchars.Length); tmpstr += pwdchars[iRandNum]; } return tmpstr; } #endregion }}
