采用全新的数据库架构

Infrastructure/GenerateId.cs

@@ -0,0 +1,111 @@
+// ***********************************************************************
+// Assembly         : FairUtility
+// Author           : Yubao Li
+// Created          : 10-13-2015
+//
+// Last Modified By : Yubao Li
+// Last Modified On : 10-13-2015
+// ***********************************************************************
+// <copyright file="GenerateId.cs" company="">
+//     Copyright (c) . All rights reserved.
+// </copyright>
+// <summary>创建唯一ID</summary>
+// ***********************************************************************
+
+using System;
+
+namespace Infrastructure
+{
+    public class GenerateId
+    {
+        /// <summary>
+        /// 生成一个长整型，可以转成19字节长的字符串
+        /// </summary>
+        /// <returns>System.Int64.</returns>
+        public static long GenerateLong()
+        {
+            byte[] buffer = Guid.NewGuid().ToByteArray();
+            return BitConverter.ToInt64(buffer, 0);
+        }
+
+        /// <summary>
+        /// 生成16个字节长度的数据与英文组合串
+        /// </summary>
+        public static string GenerateStr()
+        {
+            long i = 1;
+
+            foreach (byte b in Guid.NewGuid().ToByteArray())
+            {
+                i *= ((int)b + 1);
+            }
+
+            return string.Format("{0:x}", i - DateTime.Now.Ticks);
+        }
+
+        /// <summary>
+        /// 唯一订单号生成
+        /// </summary>
+        /// <returns></returns>
+        public static string GenerateOrderNumber()
+        {
+            string strDateTimeNumber = DateTime.Now.ToString("yyyyMMddHHmmssffff");
+            string strRandomResult = NextRandom(1000, 1).ToString("0000");
+
+            return strDateTimeNumber + strRandomResult;
+        }
+
+        /// <summary>
+        /// 参考：msdn上的RNGCryptoServiceProvider例子
+        /// </summary>
+        /// <param name="numSeeds"></param>
+        /// <param name="length"></param>
+        /// <returns></returns>
+        private static int NextRandom(int numSeeds, int length)
+        {
+            // Create a byte array to hold the random value.
+            byte[] randomNumber = new byte[length];
+            // Create a new instance of the RNGCryptoServiceProvider.
+            System.Security.Cryptography.RNGCryptoServiceProvider rng = new System.Security.Cryptography.RNGCryptoServiceProvider();
+            // Fill the array with a random value.
+            rng.GetBytes(randomNumber);
+            // Convert the byte to an uint value to make the modulus operation easier.
+            uint randomResult = 0x0;
+            for (int i = 0; i < length; i++)
+            {
+                randomResult |= ((uint)randomNumber[i] << ((length - 1 - i) * 8));
+            }
+
+            return (int)(randomResult % numSeeds) + 1;
+        }
+
+        /// <summary>
+        /// 创建11位的英文与数字组合
+        /// </summary>
+        /// <returns>System.String.</returns>
+        public static string ShortStr()
+        {
+            return Convert(GenerateLong());
+        }
+
+        static string Seq = "s9LFkgy5RovixI1aOf8UhdY3r4DMplQZJXPqebE0WSjBn7wVzmN2Gc6THCAKut";
+        /// <summary>
+        /// 10进制转换为62进制
+        /// </summary>
+        /// <param name="id"></param>
+        /// <returns></returns>
+        
+        private  static string Convert(long id)
+        {
+            if (id < 62)
+            {
+                return Seq[(int)id].ToString();
+            }
+            int y = (int)(id % 62);
+            long x = (long)(id / 62);
+
+            return Convert(x) + Seq[y];
+        }
+
+    }
+}