得到随机字符串算法_asp.net技巧

using System;
using System.Collections.Generic;
using System.Text;

namespace ring
{
    class Program
    {
        private static char[] constant =  {
        0,1,2,3,4,5,6,7,8,9,
        a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,
        A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z
        };
        public static string GetRandomStringByLength(int Length)
        {
            StringBuilder newRandom = new StringBuilder();
            Random rd = new Random();
            for (int i = 0; i < Length; i++)
            {
                newRandom.Append(constant[rd.Next(62)]);
            }
            return newRandom.ToString();
        }
        static void Main(string[] args)
        {
            //Get 10 random caracters string
            Console.WriteLine(GetRandomStringByLength(10));
            Console.ReadLine();
        }
    }
}
http://www.cnblogs.com/Ring1981/archive/2006/11/30/577400.html