public static string GetRandomString(RandomStringType randomType, int stringLength, int seed) { string[] sCaptions = new string[] { "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z" }; string[] sNumbers = new string[] { "0", "1", "2", "3", "4", "5", "6", "7", "8", "9" }; Random rnd = new Random(seed); string sResult = string.Empty; for (int i = 0; i < stringLength; i++) { if (randomType == RandomStringType.OnlyNumber) { sResult += sNumbers[rnd.Next(0, 9)]; } else if (randomType == RandomStringType.OnlyChar) { sResult += sCaptions[rnd.Next(0, 25)]; } else if (randomType == RandomStringType.NumberAndChar) { sResult += sNumbers[rnd.Next(0, 9)] + sCaptions[rnd.Next(0, 25)]; sResult = sResult.Remove(rnd.Next(0, sResult.Length - 1), 1); } } return(sResult); }
public static string GetRandomString(RandomStringType randomType, int stringLength,int seed) { string[] sCaptions = new string[] { "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z" }; string[] sNumbers = new string[] { "0", "1", "2", "3", "4", "5", "6", "7", "8", "9" }; Random rnd = new Random(seed); string sResult = string.Empty; for (int i = 0; i < stringLength; i++) { if (randomType == RandomStringType.OnlyNumber) { sResult += sNumbers[rnd.Next(0, 9)]; } else if (randomType == RandomStringType.OnlyChar) { sResult += sCaptions[rnd.Next(0, 25)]; } else if (randomType == RandomStringType.NumberAndChar) { sResult += sNumbers[rnd.Next(0, 9)] + sCaptions[rnd.Next(0, 25)]; sResult = sResult.Remove(rnd.Next(0, sResult.Length - 1), 1); } } return sResult; }
private static string RandomString(int size, RandomStringType type) { string chars; switch (type) { case RandomStringType.Alpha: chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; break; case RandomStringType.Numeric: chars = "0123456789"; break; case RandomStringType.AlphaNumeric: default: chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"; break; } char[] buffer = new char[size]; for (int i = 0; i < size; i++) { buffer[i] = chars[_rng.Next(chars.Length)]; } return(new string(buffer)); }
public static string Random(int count, RandomStringType type = RandomStringType.Any) { if (count < 0) { throw new ArgumentOutOfRangeException(nameof(count)); } if (count == 0) { return(string.Empty); } IList <Func <char> > types = __randomStringType.GetOrAdd(type, t => { List <Func <char> > list = new List <Func <char> >(); if (t.FastHasFlag(RandomStringType.SmallLetters)) { list.Add(RandomSmallLetter); } if (t.FastHasFlag(RandomStringType.CapitalLetters)) { list.Add(RandomCapitalLetter); } if (t.FastHasFlag(RandomStringType.Numbers)) { list.Add(RandomNumber); } if (!t.FastHasFlag(RandomStringType.SpecialCharacters)) { return(list); } if (t.FastHasFlag(RandomStringType.SafeCharacters)) { list.Add(RandomSafeSpecialCharacter); } else { list.Add(RandomSpecialCharacter); } return(list); }); if (types.Count == 0) { throw new ArgumentOutOfRangeException(nameof(type)); } StringBuilder sb = new StringBuilder(count); for (int i = 0; i < count; i++) { sb.Append(types.PickRandom()); } return(sb.ToString()); }
/// <summary>生成随机字符串 /// </summary> public static string GetRandomStr(int length, RandomStringType randomStringType = RandomStringType.Number) { var rd = new Random(GetRandomSeed()); var sb = new StringBuilder(); var range = RandomRanges[randomStringType]; for (var i = 0; i < length; i++) { //生成随机的当前索引 var index = rd.Next(range.Item1, range.Item2); sb.Append(RandomArray[index]); } return(sb.ToString()); }
public static string RandomString(RandomStringType type, int length) { string chars = ""; switch (type) { case RandomStringType.AlphaNumeric: chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz"; break; case RandomStringType.Numeric: chars = "0123456789"; break; case RandomStringType.Alpha: chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; break; } return(new string(Enumerable.Repeat(chars, length) .Select(s => s[random.Next(s.Length)]).ToArray())); }
public static string NextString(this Random random, int minLength, int maxLength, RandomStringType type = RandomStringType.All) { var valueSpace = ""; if (type.HasFlag(RandomStringType.AlphaLower)) { valueSpace += ALPHA; } if (type.HasFlag(RandomStringType.AlphaUpper)) { valueSpace += ALPHA.ToUpper(); } if (type.HasFlag(RandomStringType.Numeric)) { valueSpace += NUMERIC; } var value = ""; var length = minLength == maxLength ? minLength : random.Next(minLength, maxLength); for (var i = 0; i < length; i++) { var index = random.Next(valueSpace.Length); value += valueSpace[index]; } return(value); }
public static string NextString(this Random random, int length, RandomStringType type = RandomStringType.All) { return(NextString(random, length, length, type)); }