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