例子1
ASP.NET c#生成随机数的类文件,按要求产生一些随机数,最大值、最小值可以自己进行设定。代码简单,可放在你的公共库内供调用使用;类代码具体如下:
	  
		|  代码如下 | 
		复制代码 | 
	  
	  
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 using System; 
namespace DotNet.Utilities 
{ 
    /// BaseRandom 
 /// 产生随机数 
 /// 随机数管理,最大值、最小值可以自己进行设定。 
 public class BaseRandom 
 { 
  public static int Minimum = 100000; 
        public static int Maximal = 999999; 
        public static int RandomLength = 6; 
        private static string RandomString = "0123456789ABCDEFGHIJKMLNOPQRSTUVWXYZ"; 
        private static Random Random = new Random(DateTime.Now.Second); 
        #region public static string GetRandomString() 产生随机字符 
        /// 产生随机字符 
        /// 字符串 
        public static string GetRandomString() 
        { 
            string returnValue = string.Empty; 
            for (int i = 0; i < RandomLength; i++) 
            { 
                int r = Random.Next(0, RandomString.Length - 1); 
                returnValue += RandomString[r]; 
            } 
            return returnValue; 
        } 
        #endregion 
        #region public static int GetRandom() 
        ///  
        /// 产生随机数 
        ///  
        /// 随机数 
        public static int GetRandom() 
  { 
   return Random.Next(Minimum, Maximal); 
  } 
  #endregion 
        #region public static int GetRandom(int minimum, int maximal) 
        ///  
  /// 产生随机数 
  ///  
  /// 最小值 
  /// 最大值 
  /// 随机数 
        public static int GetRandom(int minimum, int maximal) 
  { 
            return Random.Next(minimum, maximal); 
  } 
  #endregion 
 } 
} 
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例子2
random函数来生成随机数
	  
		|  代码如下 | 
		复制代码 | 
	  
	  
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 static 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 );  
} 
Random random = new Random( GetRandomSeed( ) ); 
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例子3,生成固定长度的随机数
	  
		|  代码如下 | 
		复制代码 | 
	  
	  
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 <%@ Page Language="C#" %> 
<%  
  //----------------------- 随机密码开始 --------------------------- 
     ArrayList MyArray = new ArrayList(); 
        Random random = new Random(); 
        string str = null; 
 
        //循环的次数    
        int Nums = 6; 
        while (Nums > 0) 
        { 
            int i = random.Next(1, 9); 
          //  if (!MyArray.Contains(i)) 
          //  { 
                if (MyArray.Count < 6) 
                { 
                    MyArray.Add(i); 
                }  
           // } 
            Nums -= 1; 
        }  
        for (int j = 0; j <= MyArray.Count - 1; j++) 
        { 
            str += MyArray[j].ToString(); 
        }  
   //----------------------- 随机密码结束 ---------------------------  
        Response.Write(str + " my array count --> " + MyArray.Count); 
%> 
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