code.aspx.cs

易联多用户Blog网站程序源码(多层模式) 包括DAL、BLL、Common等多层 默认管理员账号admin

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.IO;
using System.Drawing;
using System.Drawing.Drawing2D;

namespace Eallies.Site.Users
{
    public partial class Code : System.Web.UI.Page
    {
        private void Page_Load(object sender, System.EventArgs e)
        {
            string code = this.GetCode();
            this.CreateImage(code);
        }

        private string GetCode()
        {
            string code = Common.Function.GetRandomCode(5);
            Session["Code"] = code;

            return code;
        }

        private void CreateImage(string code)
        {
            Bitmap image = new Bitmap((int)Math.Ceiling((code.Length * 11.5)), 20);
            Graphics print = Graphics.FromImage(image);

            try
            {
                Random random = new Random();

                print.Clear(Color.White);

                for (int i = 0; i < 25; i++)
                {
                    int x1 = random.Next(image.Width);
                    int x2 = random.Next(image.Width);
                    int y1 = random.Next(image.Height);
                    int y2 = random.Next(image.Height);

                    print.DrawLine(new Pen(Color.Silver), x1, y1, x2, y2);
                }

                Font font = new Font("Arial", 11, (System.Drawing.FontStyle.Bold | System.Drawing.FontStyle.Italic));
                LinearGradientBrush brush = new LinearGradientBrush(new Rectangle(0, 0, image.Width, image.Height), Color.Blue, Color.DarkRed, 1.2f, false);
                print.DrawString(code, font, brush, 2, 2);

                for (int i = 0; i < 25; i++)
                {
                    int x = random.Next(image.Width);
                    int y = random.Next(image.Height);

                    image.SetPixel(x, y, Color.FromArgb(random.Next()));
                }

                print.DrawRectangle(new Pen(Color.FromArgb(127, 157, 185)), 0, 0, image.Width - 1, image.Height - 1);

                MemoryStream ms = new MemoryStream();
                image.Save(ms, System.Drawing.Imaging.ImageFormat.Gif);

                Response.ClearContent();
                Response.ContentType = "image/Gif";
                Response.BinaryWrite(ms.ToArray());
            }
            finally
            {
                print.Dispose();
                image.Dispose();
            }
        }
    }
}