学步园

    privatestaticchar[]
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'
     };
   publicstaticstringGenerateRandomNumber(intLength)
     {
          System.Text.StringBuilder
newRandom =newSystem.Text.StringBuilder(62);
          Random rd=newRandom();
         for(int
i=0;
i<Length;
i++)
              {
                  newRandom.Append(constant[rd.Next(62)]);
              }
           return
newRandom.ToString();
     }