shuiyin.cs

OA系统源码 办公应用软件源码 asp.net 开发


using System;

using System.Web;
using System.Drawing;

/// <summary>
/// ShuiYin 的摘要说明
/// </summary>
public class ShuiYin : IHttpHandler
{
    public void ProcessRequest(HttpContext context)
    {//重写接口中的方法
        Image source = Image.FromFile(context.Request.PhysicalPath);//取出请求的路径
        Image water = Image.FromFile(context.Server.MapPath("~/images/Users/WaterMark.png"));

        //获取某张图片的画笔
        Graphics g = Graphics.FromImage(source);
        g.DrawImage(water,new Rectangle(source.Width-water.Width,source.Height-water.Height,water.Width,water.Height),0,0,water.Width,water.Height,GraphicsUnit.Pixel);
        g.Dispose();
        //设置输出的类型
        context.Response.ContentType = "image/jpeg";
        water.Dispose();
        //把文件保存在内存中
        source.Save(context.Response.OutputStream,System.Drawing.Imaging.ImageFormat.Jpeg);
        source.Dispose();
        context.Response.End();
       
    }

    public bool IsReusable//重写接口中的属性
    {
        get
        {
            return false;
        }
    }
}