C# 游戏点卡 批量生成
点卡面值：30元/50元/100元
卡号：是全数字
点卡密码是：字母+数字
该怎么生成？怎么批量生成这些唯一随机点卡带不同面值的
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- C# code
private string GetRandomCode() { char[] chars = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9' }; string code = string.Empty; for (int i = 0; i < 4; i++) { Random rnd = new Random(GetRandomSeed()); code += chars[rnd.Next(0, 10)].ToString(); } return code; } private int GetRandomSeed() { byte[] bytes = new byte[4]; System.Security.Cryptography.RNGCryptoServiceProvider rng = new System.Security.Cryptography.RNGCryptoServiceProvider(); rng.GetBytes(bytes); return BitConverter.ToInt32(bytes, 0); }
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看看注释
- C# code
private string GetRandomCode() { char[] chars = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9' }; //随机数范围，填上字母就会生成字母 string code = string.Empty; for (int i = 0; i < 4; i++) //4是生成多少位的随机数，自己可以改 { Random rnd = new Random(GetRandomSeed()); code += chars[rnd.Next(0, 10)].ToString(); } return code; } private int GetRandomSeed() { byte[] bytes = new byte[4]; System.Security.Cryptography.RNGCryptoServiceProvider rng = new System.Security.Cryptography.RNGCryptoServiceProvider(); rng.GetBytes(bytes); return BitConverter.ToInt32(bytes, 0); }