后台生成图片验证码保存在输出流中，前台怎么显示？

[mqcm001]

是在 ASP.net MVC 中

[小_虎]

img src=

[小_虎]

呵呵

[mqcm001]

src= what？

[j2mekaifa]

[Quote=引用 3 楼 mqcm001 的回复:]
src= what？
[/Quote]等于你后台生成的那个验证码呗

[蚂蚁路过]

<strong>验证码:</strong>
<input type="text" name="confirm" maxlength="4" size="8">
<img src="left/bj/admin/user/getcode.asp" border=0 width="60" height="16">

这个？貌似直接写你验证码图片生成的文件路径即可

[mqcm001]

[Quote=引用 4 楼 j2mekaifa 的回复:]
引用 3 楼 mqcm001 的回复:
src= what？
等于你后台生成的那个验证码呗
[/Quote]
如何获取这个验证码？

[小_虎]

=那个你输出流的页面aspx

[mqcm001]

嗯，是路径

[mqcm001]

不过mvc没有aspx

[tan124]

using System;
using System.Data;
using System.Configuration;
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; //添加引用

public partial class _Default : 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;

Random random = new Random();

for (int i = 0; i < 4; i++)
{
number = random.Next();


code = (char)('0' + (char)(number % 10));


checkCode += code.ToString();
}

Response.Cookies.Add(new HttpCookie("CheckCode", 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 < 2; 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.Black), x1, y1, x2, y2);
}

Font font = new System.Drawing.Font("Arial", 12, (System.Drawing.FontStyle.Bold));
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();
}
}
}