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using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Drawing;
using System.Drawing.Drawing2D; //ÒýÓõÄÃüÃû¿Ø¼þ
public partial class Image : System.Web.UI.Page
{
   
    protected void Page_Load(object sender, EventArgs e)
    {
   
        CreateCheckCodeImage(GenCode(4));
    }
    /**//// <summary>
    /// '²úÉúËæ»ú×Ö·û´®
    /// </summary>
    /// <param name="num">Ëæ»ú³ö¼¸¸ö×Ö·û</param>
    /// <returns>Ëæ»ú³öµÄ×Ö·û´®</returns>
    private string GenCode(int num)
    {
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