这是一个c#工具类，用于产生随机整数，随机字符串，随机颜色等，同时你可以对这个类进行扩展，产生自己的随机数据
/// <summary> /// Helper class for generating random values /// </summary> public static class RandomHelper { private static Random randomSeed = new Random(); /// <summary> /// Generates a random string with the given length /// </summary> /// <param name="size">Size of the string</param> /// <param name="lowerCase">If true, generate lowercase string</param> /// <returns>Random string</returns> public static string RandomString(int size, bool lowerCase) { // StringBuilder is faster than using strings (+=) StringBuilder RandStr = new StringBuilder(size); // Ascii start position (65 = A / 97 = a) int Start = (lowerCase) ? 97 : 65; // Add random chars for (int i = 0; i < size; i++) RandStr.Append((char)(26 * randomSeed.NextDouble() + Start)); return RandStr.ToString(); } /// <summary> /// Returns a random number. /// </summary> /// <param name="min">Minimal result</param> /// <param name="max">Maximal result</param> /// <returns>Random number</returns> public static int RandomNumber(int Minimal, int Maximal) { return randomSeed.Next(Minimal, Maximal); } /// <summary> /// Returns a random boolean value /// </summary> /// <returns>Random boolean value</returns> public static bool RandomBool() { return (randomSeed.NextDouble() > 0.5); } /// <summary> /// Returns a random color /// </summary> /// <returns></returns> public static System.Drawing.Color RandomColor() { return System.Drawing.Color.FromArgb( randomSeed.Next(256), randomSeed.Next(256), randomSeed.Next(256) ); } }//使用范例：// Generate a random word:string RandomWord = RandomHelper.RandomString(10, true);// Generate a random number:int Number = RandomHelper.RandomNumber(0, 10);// Generate a random boolean value:bool Active = RandomHelper.RandomBool();// Generate a random color:Color Background = RandomHelper.RandomColor();
