photodisplay.ashx

来自「classfinalcs.rar .net 压缩包解压时不能有密码。」· ASHX 代码 · 共 64 行

<%@ WebHandler Language="C#" Class="AspNet.StarterKits.Classifieds.Web.PhotoDisplay" %>

using System;
using System.Web;
using AspNet.StarterKits.Classifieds.BusinessLogicLayer;


namespace AspNet.StarterKits.Classifieds.Web
{
	public class PhotoDisplay : IHttpHandler
	{
		public const string QueryStringFullSize = "full";
		public const string QueryStringMediumSize = "medium";

		public void ProcessRequest(HttpContext context)
		{

			HttpResponse Response = context.Response;
			HttpRequest Request = context.Request;

			int photoId = 0;
			string photoIdQs = Request.QueryString["photoid"];
			if (photoIdQs != null && Int32.TryParse(photoIdQs, out photoId))
			{
				// checking if a particular size was requested in the querystring (otherwise, small is default)
				string sizeQs = Request.QueryString["size"];
				PhotoSize size = PhotoSize.Small;
				if (sizeQs != null)
				{
					if (sizeQs.Equals(QueryStringFullSize))
						size = PhotoSize.Full;
					else if (sizeQs.Equals(QueryStringMediumSize))
						size = PhotoSize.Medium;
				}

				if (SiteSettings.GetSharedSettings().StorePhotosInDatabase)
				{
					byte[] photo = PhotosDB.GetPhotoBytesById(photoId, size);
					if (photo != null)
					{
						Response.ContentType = "image/jpeg";
						Response.Cache.SetCacheability(HttpCacheability.Public);
						Response.BufferOutput = false;
						Response.OutputStream.Write(photo, 0, photo.Length);
					}
				}
				else
				{
					string url = PhotosDB.GetFilePath(photoId, true, size);
					Response.Redirect(url, true);
				}
			}
		}

		public bool IsReusable
		{
			get
			{
				return true;
			}
		}

	}
}