C# 生成唯一订单号
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2023-12-24 14:04:57
根据GUID+DateTime.Now.Ticks生产唯一订单号 ......
根据guid+datetime.now.ticks生产唯一订单号
1 /// <summary> 2 /// 生成唯一数 3 /// </summary> 4 public class uniquedata 5 { 6 private static object obj = new object(); 7 private static int guidint { get { return guid.newguid().gethashcode(); } } 8 private static string guidintstr { get { return math.abs(guidint).tostring(); } } 9 10 /// <summary> 11 /// 生成 12 /// </summary> 13 /// <param name="mark">前缀</param> 14 /// <param name="timetype">时间精确类型 1 日,2 时,3 分,4 秒(默认) </param> 15 /// <param name="id">id 小于或等于0则随机生成id</param> 16 /// <returns></returns> 17 public static string gener(string mark, int timetype = 4, int id = 0) 18 { 19 lock (obj) 20 { 21 var number = mark; 22 var ticks = (datetime.now.ticks - guidint).tostring(); 23 int fillcount = 0;//填充位数 24 25 number += gettimestr(timetype, out fillcount); 26 if (id > 0) 27 { 28 number += ticks.substring(ticks.length - (fillcount + 3)) + id.tostring().padleft(10, '0'); 29 } 30 else 31 { 32 number += ticks.substring(ticks.length - (fillcount + 3)) + guidintstr.padleft(10, '0'); 33 } 34 return number; 35 } 36 } 37 38 /// <summary> 39 /// 生成 40 /// </summary> 41 /// <param name="mark">前缀</param> 42 /// <param name="timetype">时间精确类型 1 日,2 时,3 分,4 秒(默认)</param> 43 /// <param name="id">id 小于或等于0则随机生成id</param> 44 /// <returns></returns> 45 public static string generlong(string mark, int timetype = 4, long id = 0) 46 { 47 lock (obj) 48 { 49 var number = mark; 50 var ticks = (datetime.now.ticks - guidint).tostring(); 51 int fillcount = 0;//填充位数 52 53 number += gettimestr(timetype, out fillcount); 54 if (id > 0) 55 { 56 number += ticks.substring(ticks.length - fillcount) + id.tostring().padleft(19, '0'); 57 } 58 else 59 { 60 number += guidintstr.padleft(10, '0') + ticks.substring(ticks.length - (9 + fillcount)); 61 } 62 return number; 63 } 64 } 65 66 /// <summary> 67 /// 获取时间字符串 68 /// </summary> 69 /// <param name="timetype">时间精确类型 1 日,2 时,3 分,4 秒(默认)</param> 70 /// <param name="fillcount">填充位数</param> 71 /// <returns></returns> 72 private static string gettimestr(int timetype, out int fillcount) 73 { 74 var time = datetime.now; 75 if (timetype == 1) 76 { 77 fillcount = 6; 78 return time.tostring("yyyymmdd"); 79 } 80 else if (timetype == 2) 81 { 82 fillcount = 4; 83 return time.tostring("yyyymmddhh"); 84 } 85 else if (timetype == 3) 86 { 87 fillcount = 2; 88 return time.tostring("yyyymmddhhmm"); 89 } 90 else 91 { 92 fillcount = 0; 93 return time.tostring("yyyymmddhhmmss"); 94 } 95 } 96 }