QSMP.Utility/Security/VerifyCode.cs

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using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;

namespace QSMP.Utility.Security
{
    /// <summary>
    /// 验证码生成类。 
    /// </summary>
    public class VerifyCode
    {
        private string _text;
        private byte[] _image;

        #region 公有属性
        /// <summary>
        /// 验证码
        /// </summary>
        public string Text
        {
            get { return _text; }
            set { _text = value; }
        }
        /// <summary>
        /// 验证码图片(字节数组)
        /// </summary>
        public byte[] Image
        {
            get { return _image; }
            set { _image = value; }
        }
        #endregion

        public VerifyCode()
        {
            GetVerifyCode();
        }
        private void GetVerifyCode()
        {
            int codeW = 80; //画布宽
            int codeH = 30; //画布高
            int fontSize = 16;
            string chkCode = string.Empty;
            //颜色列表，用于验证码、噪线、噪点 
            Color[] color = { Color.Black, Color.Red, Color.Blue, Color.Green, Color.Orange, Color.Brown, Color.Brown, Color.DarkBlue };
            //字体列表，用于验证码 
            string[] font = { "Times New Roman" };
            //验证码的字符集，去掉了一些容易混淆的字符 
            char[] character = { '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'd', 'e', 'f', 'h', 'k', 'm', 'n', 'r', 'x', 'y', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K', 'L', 'M', 'N', 'P', 'R', 'S', 'T', 'W', 'X', 'Y' };
            Random rnd = new Random();
            //生成验证码字符串 
            for (int i = 0; i < 4; i++)
            {
                chkCode += character[rnd.Next(character.Length)];
            }
            this._text = chkCode;

            //创建画布
            Bitmap bmp = new Bitmap(codeW, codeH);