一般处理程序 给图片添加文字水印

<%@ WebHandler Language="C#" Class="MakeImg" %>

using System;
using System.Web;
using System.Drawing;

public class MakeImg : IHttpHandler {

public void ProcessRequest (HttpContext context) {
context.Response.ContentType = "image/jpg";//告诉浏览器以什么编码方式处理2进制流
string imgPath="upload\\1.jpg";
using (Image img = Bitmap.FromFile(context.Server.MapPath(imgPath)))//找到图片文件的物理路径
{
using(Graphics g=Graphics.FromImage(img))
{
g.DrawString("大英哥",new Font("黑体",16),Brushes.Black,0,0);
img.Save(context.Response.OutputStream,System.Drawing.Imaging.ImageFormat.Jpeg);
}
}

}

public bool IsReusable {
get {
return false;
}
}

}