Common/Rand.cs

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using System;
using System.Collections.Generic;
using System.Text;

/// <summary>
/// 随机数操作
/// </summary>
public class Rand
{
    public static string GetNumPwd(int num)//生成数字随机数
    {
        string a = "0123456789";
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < num; i++)
        {
            sb.Append(a[new Random(Guid.NewGuid().GetHashCode()).Next(0, a.Length - 1)]);
        }

        return sb.ToString();
    }
    public static string GetAbcPwd(int num)//生成字母随机数
    {
        string a = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < num; i++)
        {
            sb.Append(a[new Random(Guid.NewGuid().GetHashCode()).Next(0, a.Length - 1)]);
        }

        return sb.ToString();
    }
    public static string GetMixPwd(int num)//生成混合随机数
    {
        string a = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < num; i++)
        {
            sb.Append(a[new Random(Guid.NewGuid().GetHashCode()).Next(0, a.Length - 1)]);
        }

        return sb.ToString();
    }



    public static string GetValidCode() //生成混合随机数
    {
        string n = string.Empty;
        n = Guid.NewGuid().ToString().Substring(0, 6);
        //Response.Write(n);
        return n;
    }
    /// <summary>
    /// 生成随机数字
    /// </summary>
    /// <param name="length">生成长度</param>
    /// <returns></returns>
    public static string Number(int Length)
    {
        return Number(Length, false);