济州岛机场里的免税店都有什么品牌

免税店不是新罗也不是乐天，是以G开头，不大。

我记得的品牌有，MCM，兰芝，巧克力什么的。

要买还是在市区买吧，机场的太小了。

asp.net怎么做验证码？

思路：根据随机字符（字符记录到Session中以便验证）生成图片并以图片形式在页面显示

代码如下：

using System.Drawing;

public partial class vc : System.Web.UI.Page

{

    protected void Page_Load(object sender, EventArgs e)

    {    CreateCheckCodeImage(GenerateCheckCode());

    }

    private string GenerateCheckCode()

    {    int number;    char code;    string checkCode = String.Empty;

    System.Random random = new Random();

    for (int i = 0; i < 5; i++)    {    number = random.Next();

    if (number % 2 == 0)    code = (char)('0' + (char)(number % 10));    else    code = (char)('A' + (char)(number % 26));

    checkCode += code.ToString();    }

    Session[vcode] = checkCode;

    return checkCode;

    }

    private void CreateCheckCodeImage(string checkCode)

    {    if (checkCode == null || checkCode.Trim() == String.Empty)    return;

    System.Drawing.Bitmap image = new System.Drawing.Bitmap((int)Math.Ceiling((checkCode.Length * 12.5)), 22);    Graphics g = Graphics.FromImage(image);

    try    {    //生成随机生成器    Random random = new Random();

    //清空图片背景色    g.Clear(Color.White);

    //画图片的背景噪音线    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);

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

    Font font = new System.Drawing.Font(Arial, 12, (System.Drawing.FontStyle.Bold | System.Drawing.FontStyle.Italic));    System.Drawing.Drawing2D.LinearGradientBrush brush = new System.Drawing.Drawing2D.LinearGradientBrush(new Rectangle(0, 0, image.Width, image.Height), Color.Blue, Color.DarkRed, 1.2f, true);    g.DrawString(checkCode, font, brush, 2, 2);

    //画图片的前景噪音点    for (int i = 0; i < 100; i++)    {    int x = random.Next(image.Width);    int y = random.Next(image.Height);

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

    //画图片的边框线    g.DrawRectangle(new Pen(Color.Silver), 0, 0, image.Width - 1, image.Height - 1);

    System.IO.MemoryStream ms = new System.IO.MemoryStream();    image.Save(ms, System.Drawing.Imaging.ImageFormat.Gif);    Response.ClearContent();    Response.ContentType = image/Gif;    Response.BinaryWrite(ms.ToArray());    }    finally    {    g.Dispose();    image.Dispose();    }

    }

}

HTLM代码页面上只留第一行就可以了

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