using System; using System.Web; using System.Drawing ; /// <summary> /// Png 的摘要说明。 public sealed class LocalPng:IHttpHandler { #region IHttpHandler 成员 public void ProcessRequest(HttpContext context) { if(context.Request["key"]!=null&&context.Request["key"].Length ==4)//还有ACSSI码是1-9的数字和a-z的字母 { string machine_key=context.Request["key"]; context.Response.Clear(); try { //原图 Bitmap sImage = new Bitmap(context.Server.MapPath("key.png.bmp")); //图片路径 //验证码图 Graphics wg = Graphics.FromImage(sImage); wg.DrawString(machine_key,new Font("Comic Sans MS",14),new SolidBrush(Color.RoyalBlue),3,0); wg.Save(); context.Response.ContentType = "image/Jpeg"; sImage.Save(context.Response.OutputStream,System.Drawing.Imaging.ImageFormat.Jpeg); wg.Dispose(); sImage.Dispose(); } catch(Exception e) {context.Response.Write(e.Message); } context.Response.End(); } } public bool IsReusable { get { // TODO: 添加 CodeKey.IsReusable getter 实现 return false; } } #endregion } 

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