Control/VerifyCodeManager.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Drawing;
using Common;
using DataSqlserver;
using Config;

namespace Controller
{
    public class VerifyCodeManager
    {
        /// <summary>
        /// 检查验证码(包括取表单)
        /// </summary>
        /// <returns></returns>
        public static bool CheckVerifyCode()
        {
            string code = BlogRequest.GetString("verifycode");
            int vcid = TypeConverter.StrToInt(BlogRequest.GetString("vcid"));
            if (DataSqlserver.VerifyCodeManagerSql.CheckVerifyCode(code, vcid))
            {
                return true;
            }
            return false;
        }

        /// <summary>
        /// 生成验证码函数
        /// </summary>
        /// <returns></returns>
        private static string GenerateCheckCode()
        {
            int number;
            char code;
            string checkCode = String.Empty;

            System.Random random = new Random();

            for (int i = 0; i < 5; i++)
            {
                number = random.Next();

                if (number % 2 == 0)
                    code = (char)('0' + (char)(number % 10));
                else
                    code = (char)('A' + (char)(number % 26));

                checkCode += code.ToString();
            }
            return checkCode;
        }
        /// <summary>
        /// 生成验证码
        /// </summary>
        /// <param name="checkCode"></param>
        /// <param name="vcid"></param>
        /// <param name="imagename"></param>
        private static void CreateCheckCodeImage(string checkCode, int vcid, string imagename)