C#取验证码

using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Net;
using System.Net.Sockets;

namespace LeadBBSEnder
{
    /// <summary>
    /// ValidateCode 的摘要说明。
    /// </summary>
    public sealed class RunningRes
    {
        private static TcpClienter _tc;
        public static TcpClienter Tcp
        {
            get
            {
                if( _tc == null )
                    _tc = new TcpClienter( string.Empty , new IPEndPoint(IPAddress.Any , 1710) , new IPEndPoint(IPAddress.Parse( "221.12.79.162" ) , 80) );
                return _tc;
            }
        }

        

        public static string GetValidateCode( Bitmap bm )
        {
            short s1 = Paste( bm , Position.Char1 );
            short s2 = Paste( bm , Position.Char2 );
            short s3 = Paste( bm , Position.Char3 );
            short s4 = Paste( bm , Position.Char4 );
            return string.Format("{0}{1}{2}{3}" , s1 , s2 , s3 , s4 );
        }

        private static Point GetOffsetPoint( Position p )
        {
            switch( p )
            {
                case Position.Char1:
                    return new Point( 2 , 1 );
                case Position.Char2:
                    return new Point( 9 , 1 );
                case Position.Char3:
                    return new Point( 16 , 1 );
                default:
                    return new Point( 23 , 1 );
            }
        }

        private static short Paste( Bitmap bm , Position pc )
        {
            short[,] Char0 = {
                    { 0,1,1,1,1,0 },
                    { 1,1,0,0,1,1 },
                    { 1,1,0,0,1,1 },
                    { 1,1,0,0,1,1 },
                    { 1,1,0,0,1,1 },
                    { 1,1,0,0,1,1 },
                    { 1,1,0,0,1,1 },
                    { 0,1,1,1,1,0 }
                             };
            short[,] Char1 = {
                    { 0,0,1,1,0,0 },
                    { 0,1,1,1,0,0 },
                    { 0,0,1,1,0,0 },
                    { 0,0,1,1,0,0 },
                    { 0,0,1,1,0,0 },
                    { 0,0,1,1,0,0 },
                    { 0,0,1,1,0,0 },
                    { 0,1,1,1,1,0 }
                             };
            short[,] Char2 = {
                    { 0,1,1,1,1,0 },
                    { 1,1,0,0,1,1 },
                    { 1,1,0,0,1,1 },
                    { 0,0,0,1,1,0 },
                    { 0,0,1,1,0,0 },
                    { 0,1,1,0,0,0 },
                    { 1,1,0,0,0,0 },
                    { 1,1,1,1,1,1 }
                             };
            short[,] Char3 = {
                    { 0,1,1,1,1,0 },
                    { 1,1,0,0,1,1 },
                    { 0,0,0,0,1,1 },
                    { 0,0,1,1,1,0 },
                    { 0,0,0,0,1,1 },
                    { 0,0,0,0,1,1 },
                    { 1,1,0,0,1,1 },
                    { 0,1,1,1,1,0 }
                             };
            short[,] Char4 = {
                    { 0,0,0,1,1,0 },
                    { 0,0,1,1,1,0 },
                    { 0,1,1,1,1,0 },
                    { 0,1,1,1,1,0 },
                    { 1,1,0,1,1,0 },
                    { 0,1,1,1,1,1 },
                    { 0,0,0,1,1,0 },
                    { 0,0,0,1,1,1 }
                             };
            short[,] Char5 = {
                    { 1,1,1,1,1,1 },
                    { 1,1,0,0,0,0 },
                    { 1,1,0,0,0,0 },
                    { 1,1,1,1,1,0 },
                    { 0,0,0,0,1,1 },
                    { 0,0,0,0,1,1 },
                    { 1,1,0,0,1,1 },
                    { 0,1,1,1,1,0 }
                             };
            short[,] Char6 = {
                    { 0,1,1,1,1,0 },
                    { 1,1,0,1,1,0 },
                    { 1,1,0,0,0,0 },
                    { 1,1,1,1,1,0 },
                    { 1,1,0,0,1,1 },
                    { 1,1,0,0,1,1 },
                    { 1,1,0,0,1,1 },
                    { 0,1,1,1,1,0 }
                             };
            short[,] Char7 = {
                    { 1,1,1,1,1,1 },
                    { 1,1,0,1,1,0 },
                    { 0,0,0,1,1,0 },
                    { 0,0,1,1,0,0 },
                    { 0,0,1,1,0,0 },
                    { 0,0,1,1,0,0 },
                    { 0,0,1,1,0,0 },
                    { 0,0,1,1,0,0 }
                             };
            short[,] Char8 = {
                    { 0,1,1,1,1,0 },
                    { 1,1,0,0,1,1 },
                    { 1,1,0,0,1,1 },
                    { 0,1,1,1,1,0 },
                    { 1,1,0,0,1,1 },
                    { 1,1,0,0,1,1 },
                    { 1,1,0,0,1,1 },
                    { 0,1,1,1,1,0 }
                             };
            short[,] Char9 = {
                    { 0,1,1,1,1,0 },
                    { 1,1,0,0,1,1 },
                    { 1,1,0,0,1,1 },
                    { 1,1,0,0,1,1 },
                    { 0,1,1,1,1,1 },
                    { 0,0,0,0,1,1 },
                    { 0,1,1,0,1,1 },
                    { 0,1,1,1,1,0 }
                             };
            Point Sp = GetOffsetPoint( pc );
            if( Paste(bm,Sp,Char0) )
                return 0;
            if( Paste(bm,Sp,Char1) )
                return 1;
            if( Paste(bm,Sp,Char2) )
                return 2;
            if( Paste(bm,Sp,Char3) )
                return 3;
            if( Paste(bm,Sp,Char4) )
                return 4;
            if( Paste(bm,Sp,Char5) )
                return 5;
            if( Paste(bm,Sp,Char6) )
                return 6;
            if( Paste(bm,Sp,Char7) )
                return 7;
            if( Paste(bm,Sp,Char8) )
                return 8;
            if( Paste(bm,Sp,Char9) )
                return 9;
            throw new Exception("解释不到!");
        }
        private static bool Paste( Bitmap bm , Point offset, short[,] Char )
        {                
            for( int i = 0 ; i < 8 ; i++ )
            {
                for( int j = 0 ; j < 6 ; j++ )
                {
                    Color Pc = bm.GetPixel( offset.X + j , offset.Y + i );
                    if( Pc.A == 255 && Char[i,j] == 1 || Pc.A == 0 && Char[i,j] == 0 )
                        continue;
                    else
                        return false;
                }
            }
            return true;
        }

    }

    internal enum Position
    {
        Char1,Char2,Char3,Char4
    }
}