[csharp] view plaincopyprint?
- /// <summary>
- /// 根据GUID获取16位的唯一字符串
- /// </summary>
- /// <param name=\"guid\"></param>
- /// <returns></returns>
- public static string GuidTo16String()
- {
- long i = 1;
- foreach (byte b in Guid.NewGuid().ToByteArray())
- i *= ((int)b + 1);
- return string.Format("{0:x}", i - DateTime.Now.Ticks);
- }
- /// <summary>
- /// 根据GUID获取19位的唯一数字序列
- /// </summary>
- /// <returns></returns>
- public static long GuidToLongID()
- {
- byte[] buffer = Guid.NewGuid().ToByteArray();
- return BitConverter.ToInt64(buffer, 0);
- }
[csharp] view plaincopyprint?
- /// <summary>
- /// 生成22位唯一的数字 并发可用
- /// </summary>
- /// <returns></returns>
- public static string GenerateUniqueID()
- {
- System.Threading.Thread.Sleep(1); //保证yyyyMMddHHmmssffff唯一
- Random d = new Random(BitConverter.ToInt32(Guid.NewGuid().ToByteArray(), 0));
- string strUnique = DateTime.Now.ToString("yyyyMMddHHmmssffff") + d.Next(1000, 9999);
- return strUnique;
- }
时间: 2024-10-27 14:17:16