- <%@ webHandler Language="C#" Class="UploadFile" Debug="true" %>
- using System;
- using System.Web;
- public class UploadFile : IHttpHandler
- {
- public void ProcessRequest(HttpContext context)
- {
- context.Response.ContentType = "text/plain";
- HttpPostedFile f1 = context.Request.Files["f1"];
- String fileExt = System.IO.Path.GetExtension(f1.FileName);
- System.Drawing.Image image = System.Drawing.Image.FromStream(f1.InputStream);
- int newWidth = 300, newHeight = 200;
- if ((decimal)image.Width / image.Height > (decimal)newWidth / newHeight)
- {
- newHeight = Convert.ToInt32((decimal)image.Height * newWidth / image.Width);
- }
- else if ((decimal)image.Width / image.Height < (decimal)newWidth / newHeight)
- {
- newWidth = Convert.ToInt32((decimal)image.Width * newHeight / image.Height);
- }
- System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(newWidth, newHeight);
- System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bmp);
- g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
- g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
- g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
- System.Drawing.Rectangle rectDestination = new System.Drawing.Rectangle(0, 0, newWidth, newHeight);
- g.DrawImage(image, rectDestination, 0, 0, image.Width, image.Height, System.Drawing.GraphicsUnit.Pixel);
- bmp.Save(context.Server.MapPath("~/") + DateTime.Now.ToString("yyyyMMddHHmmss") + fileExt);
- bmp.Dispose();
- image.Dispose();
- context.Response.Write("OK");
- }
- public bool IsReusable
- {
- get
- {
- return false;
- }
- }
- }
- //该片段来自于http://www.codesnippet.cn/detail/260720134822.html
来源: http://www.codesnippet.cn/detail/260720134822.html