【Asp】Asp.NET 随机码生成基类(随机字母 随机数字 随机字母+数字)-NET-随机码

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Asp.NET 随机码生成基类(随机字母,随机数字,随机字母+数字)

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
{
/// <summary>
/// 随机函数
/// </summary>
public class RandomObject
{
#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
}
}

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