1 using System.Drawing;
 2 
 3 namespace kq.Utils
 4 {
 5     public static class CommonTools
 6     {
 7 
 8         public static Bitmap getVerifyCode(Bitmap srcBmp, Rectangle rectangle)
 9         {
10             //初始化一个bmp对象，90代表图片的宽度，37代表高度
11             Bitmap bmp = new Bitmap(90, 37);
12             Graphics g = Graphics.FromImage(bmp);
13             g.DrawImage(srcBmp, 0, 0, rectangle, GraphicsUnit.Pixel);
14             return bmp;
15         }
16     }
17 }

 1 using kq.Utils;
 2 using OpenQA.Selenium;
 3 using OpenQA.Selenium.Chrome;
 4 using System.Drawing;
 5 
 6 namespace kq
 7 {
 8     class Program
 9     {
10         static void Main(string[] args)
11         {
12             try
13             {
14                 string screenImg = @"d:\screenImg.png";
15 
16                 Bitmap fromBmp = new Bitmap(screenImg);
17                 Rectangle section1 = new Rectangle(936, 523, 90, 37);
18 
19                 Bitmap bmp = CommonTools.getVerifyCode(fromBmp, section1);
20 
21                 bmp.Save(@"d:\验证码.bmp");
22             }
23             catch (System.Exception e)
24             {
25                 System.Console.WriteLine(e.Message);
26             }
27 
28         }
29     }
30 }