asp.net生成缩略图示例方法分享(2)

//输出图片
        public static void OutPutImg(string imgFilePath)
        {
            FileStream fs = new FileStream(HttpContext.Current.Server.MapPath(imgFilePath), FileMode.Open, FileAccess.Read);
            DateTime contentModified = System.IO.File.GetLastWriteTime(HttpContext.Current.Server.MapPath(imgFilePath));
            if (IsClientCached(contentModified))
            {
                HttpContext.Current.Response.StatusCode = 304;
                HttpContext.Current.Response.SuppressContent = true;
            }
            else
            {
                byte[] mydata = new byte[fs.Length];
                int Length = Convert.ToInt32(fs.Length);
                fs.Read(mydata, 0, Length);
                fs.Close();
                HttpContext.Current.Response.OutputStream.Write(mydata, 0, Length);
                HttpContext.Current.Response.ContentType = "image/jpeg";
                HttpContext.Current.Response.End();
                HttpContext.Current.Response.Cache.SetETagFromFileDependencies();
                HttpContext.Current.Response.Cache.SetAllowResponseInBrowserHistory(true);
                HttpContext.Current.Response.Cache.SetLastModified(contentModified);
            }
        }

复制代码 代码如下: