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43 lines
1.2 KiB
C#
43 lines
1.2 KiB
C#
using System;
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namespace DS.WMS.PrintApi.Utils
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{
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public class NumUtil
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{
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#region 生成随机推荐码
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/// <summary>
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/// 生成随机数的种子
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/// </summary>
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/// <returns></returns>
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private static int getNewSeed()
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{
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byte[] rndBytes = new byte[4];
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System.Security.Cryptography.RNGCryptoServiceProvider rng =
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new System.Security.Cryptography.RNGCryptoServiceProvider();
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rng.GetBytes(rndBytes);
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return BitConverter.ToInt32(rndBytes, 0);
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}
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#endregion 生成随机推荐码
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/// <summary>
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/// 生成随机数
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/// </summary>
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/// <param name="length">位数</param>
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/// <returns></returns>
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public static string GetRandomString(int len)
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{
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string s = "123456789abcdefghijklmnpqrstuvwxyzABCDEFGHIJKLMNPQRSTUVWXYZ";
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string reValue = string.Empty;
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Random rnd = new Random(getNewSeed());
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while (reValue.Length < len)
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{
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string s1 = s[rnd.Next(0, s.Length)].ToString();
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if (reValue.IndexOf(s1) == -1) reValue += s1;
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}
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return reValue;
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}
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}
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}
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