生成有水印的圖片代碼

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Drawing;

using System.Drawing.Imaging;

using System.IO;

namespace TestHandler

{

    public class NumberBackGround : IHttpHandler

{

    public bool IsReusable

    {

        get

        {

            return false;

        }

    }

    public void Proce***equest(HttpContext context)

    {

        //獲取物理路徑

        string path = context.Request.PhysicalPath;

        //獲取水印路徑

        string logo = context.Server.MapPath("~/images/logo.jpg");

        Image img = Image.FromFile(path);

        Graphics g = Graphics.FromImage(img);

        //噴logo

        Image imgLogo = Image.FromFile(logo);

        float x=(float)(img.Width-1000);

        float y = (float)(img.Height -200); 

        g.DrawImage(imgLogo,new RectangleF(x,y,1000f,200f));

        //處理後場景以圖片形式在客戶端響應

        img.Save(context.Response.OutputStream,System.Drawing.Imaging.ImageFormat.Jpeg);

        img.Dispose();

        imgLogo.Dispose();

    }

}

 

web.config配置

在<system.web>節點下面添加

<httpHandlers>

        <add  verb="*" path="images/*.jpg" type="NumberBackGround"/>

        </httpHandlers>