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/// <summary>
/// 生成随机字母与数字或字符
/// </summary>
/// <param name="Length">生成长度</param>
/// <param name="Sleep">是否要在生成前将当前线程阻止以避免重复</param>
/// <returns></returns>
public static string Str(int Length, bool Sleep)
{
if(Sleep)
System.Threading.Thread.Sleep(3);
char[] Pattern = new char[] { '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' ,'+'};
string result = "";
int n = Pattern.Length;
System.Random random = new Random(~unchecked((int)DateTime.Now.Ticks));
for (int i = 0; i < Length; i++)
{
int rnd = random.Next(0,n);
result += Pattern[rnd];
}
return result;
}
string s = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_"; //自己定义符号
string r = string.Empty;
Random random = new Random();
Enumerable.Repeat<int>(0, 6).ToList().ForEach(x => r += s[random.Next(s.Length)]);
Response.Write(r);