随机数 字母 数字

随机数 字母 数字

 

//len:随机数长度。beginRange，endRange：为"0123456789abcdefghigklmnopqrstuvwxyzABCDEFGHIGKLMNOPQRSTUVWXYZ"这段字符串的范围

1 private string GetRandomCharNum(int len, int beginRange, int endRange)
 2 {
 3     string ret = null;
 4     string str = @"0123456789abcdefghigklmnopqrstuvwxyzABCDEFGHIGKLMNOPQRSTUVWXYZ";
 5     var seed = Guid.NewGuid().GetHashCode();
 6     Random random = new Random(seed);
 7     for (int i = 0; i < len; i++)
 8     {
 9         ret += str.Substring(beginRange + random.Next(endRange), 1);
10     }
11     return ret;
12