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The author:(作者)delvpublished in(发表于) 2014/1/24 9:03:11 Asp.NET，生成随机码基类(随机字母，随机数字，随机字母+数字，)_[Asp.Net教程]
/############################################ 版权声明： 文章内容为本站编辑,创作.你可以任意转载、发布、使用但请务必以明文标注文章原始出处及本声明 http://www.opent.cn 作者:浪淘沙 ############################################/ 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 EC { /// /// 随机函数 /// public class RandomObject { #region 数字随机数 /// /// 数字随机数 /// /// 生成长度 /// 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 /// /// 数字和字母随机数 /// /// 生成长度 /// 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 /// /// 字母随机数 /// /// 生成长度 /// 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 /// /// 日期随机函数 /// /// 长度 /// 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 /// /// 生成GUID /// /// public static string GetGuid() { System.Guid g = System.Guid.NewGuid(); return g.ToString(); } #endregion } } Asp.NET 生成随机码基类(随机字母,随机数字,随机字母+数字 )
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