不区分大小写的验证码（c#）

大小写通用和设置多少验证个码验证

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;

using System.Windows.Forms;
using DevExpress.XtraEditors;

namespace Kuade.无区分大小写验证码
{
    /// 

    /// 
    /// 

    public partial class FrmMainForm : Form
    {
        string checkCode = ““;
        /// 

        /// 构造函数
        /// 

        public FrmMainForm（）
        {
            InitializeComponent（）;
        }
        private void CreateVerificationCode（int CodeCount）
        {
            #region 产生验证码
            string allChar = “0123456789ABCDEFGHiJKMNPQRSTUWXYZ“;
            string[] allCharArray = allChar.Split（‘‘）;
   

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2019-06-27 11:29  无区分大小写验证码\
     目录           0  2019-06-27 11:29  无区分大小写验证码\.vs\
     目录           0  2019-06-27 11:29  无区分大小写验证码\.vs\无区分大小写验证码\
     目录           0  2019-06-27 11:29  无区分大小写验证码\.vs\无区分大小写验证码\v15\
     文件       32256  2019-06-27 11:39  无区分大小写验证码\.vs\无区分大小写验证码\v15\.suo
     目录           0  2019-06-27 11:29  无区分大小写验证码\.vs\无区分大小写验证码\v15\Server\
     目录           0  2019-06-27 11:29  无区分大小写验证码\.vs\无区分大小写验证码\v15\Server\sqlite3\
     文件           0  2019-06-27 11:29  无区分大小写验证码\.vs\无区分大小写验证码\v15\Server\sqlite3\db.lock
     文件     4505600  2019-06-27 11:36  无区分大小写验证码\.vs\无区分大小写验证码\v15\Server\sqlite3\storage.ide
     文件       32768  2019-06-27 11:29  无区分大小写验证码\.vs\无区分大小写验证码\v15\Server\sqlite3\storage.ide-shm
     文件     5347792  2019-06-27 11:38  无区分大小写验证码\.vs\无区分大小写验证码\v15\Server\sqlite3\storage.ide-wal
     目录           0  2019-06-27 11:29  无区分大小写验证码\Publish\
     目录           0  2019-06-27 11:38  无区分大小写验证码\Publish\无区分大小写验证码\
     目录           0  2019-06-27 11:36  无区分大小写验证码\Publish\无区分大小写验证码\de\
     文件    20946168  2019-04-03 20:32  无区分大小写验证码\Publish\无区分大小写验证码\DevExpress.BonusSkins.v18.2.dll
     文件     6830840  2019-04-03 20:32  无区分大小写验证码\Publish\无区分大小写验证码\DevExpress.Data.v18.2.dll
     文件     1327500  2019-04-03 20:32  无区分大小写验证码\Publish\无区分大小写验证码\DevExpress.Data.v18.2.xml
     文件     8426232  2019-04-03 20:32  无区分大小写验证码\Publish\无区分大小写验证码\DevExpress.Images.v18.2.dll
     文件     2466552  2019-04-03 20:32  无区分大小写验证码\Publish\无区分大小写验证码\DevExpress.Office.v18.2.Core.dll
     文件       95799  2019-04-03 20:32  无区分大小写验证码\Publish\无区分大小写验证码\DevExpress.Office.v18.2.Core.xml
     文件     2966776  2019-04-03 20:32  无区分大小写验证码\Publish\无区分大小写验证码\DevExpress.Pdf.v18.2.Core.dll
     文件      324637  2019-04-03 20:32  无区分大小写验证码\Publish\无区分大小写验证码\DevExpress.Pdf.v18.2.Core.xml
     文件     4303096  2019-04-03 20:32  无区分大小写验证码\Publish\无区分大小写验证码\DevExpress.Printing.v18.2.Core.dll
     文件     1579433  2019-04-03 20:32  无区分大小写验证码\Publish\无区分大小写验证码\DevExpress.Printing.v18.2.Core.xml
     文件     8259832  2019-04-03 20:32  无区分大小写验证码\Publish\无区分大小写验证码\DevExpress.RichEdit.v18.2.Core.dll
     文件     1999550  2019-04-03 20:32  无区分大小写验证码\Publish\无区分大小写验证码\DevExpress.RichEdit.v18.2.Core.xml
     文件       89848  2019-04-03 20:32  无区分大小写验证码\Publish\无区分大小写验证码\DevExpress.Sparkline.v18.2.Core.dll
     文件       26651  2019-04-03 20:32  无区分大小写验证码\Publish\无区分大小写验证码\DevExpress.Sparkline.v18.2.Core.xml
     文件    14625016  2019-04-03 20:32  无区分大小写验证码\Publish\无区分大小写验证码\DevExpress.Utils.v18.2.dll
     文件      939475  2019-04-03 20:32  无区分大小写验证码\Publish\无区分大小写验证码\DevExpress.Utils.v18.2.xml
     文件     6486264  2019-04-03 20:32  无区分大小写验证码\Publish\无区分大小写验证码\DevExpress.XtraBars.v18.2.dll
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