Using Tessnet2_32.dll to realize OCR verification code recognition

Using System;  
Using System.Collections.Generic;  
Using System.Web;  
Add using System.Net;  
Using System.IO; Using Tessnet2;  
Reference Tessnet2_32.dll using System.Drawing;  
Using Getcodes;  
  
Using System.Text;  
        Public partial class OCR:System.Web.UI.Page {protected void Page_Load (object sender, EventArgs e) {  
        WebRequest request = WebRequest.Create ("http://sz.2zf.cn/js/code2.asp"); WebResponse response = Request.  
        GetResponse (); Stream st = Response.  
        GetResponseStream ();  
        Bitmap Bitmap = (Bitmap) bitmap.fromstream (ST);  
        Uncodebase ud = new Uncodebase (bitmap); Bitmap = ud.  
        Graybypixels (); Ud.  
  
        Clearnoise (128, 2);  
  
        Save Display string Savepath = "~/photos/orc.gif"; Bitmap.  
        Save (Server.MapPath (Savepath), System.Drawing.Imaging.ImageFormat.Gif);  
  
        Image1.imageurl = Savepath; Tessnet2. Tesseract OCR = new Tessnet2. Tesseract ()//declares an OCR class OCR. SetvAriable ("Tessedit_char_whitelist", "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"); Set the identification variable//OCR.  
        Init (NULL, "Eng", false); Ocr. Init (Server.MapPath ("~/language"), "Eng", true); Applies the current language pack. Note that Tessnet2 is supported in Mandarin. Language pack Download Link: http://code.google.com/p/tesseract-ocr/downloads/list list<tessnet2. word> result = OCR. DOOCR (bitmap, rectangle.empty);//Perform recognition operation string code = Result[0].  
        Text;  
    Label1.Text = code;   }  
}