imagehandler.cs

来自「一个超强的在线WORD汉化版ASP程序5...」· CS 代码 · 共 50 行

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

namespace Lion.Data.Library.HtmlEditor.Core
{
	/// <summary>
	/// ImageHandler 的摘要说明。
	/// </summary>
	internal class ImageHandler
	{

		#region Function Custom

		internal static void ImageContent(HttpContext context)
		{
			string filename = null,sFileExt = null;
			if(context.Request["filename"]==null)
				throw new ArgumentNullException("filename");
			else
				filename = context.Request["filename"];
			sFileExt = filename.Substring(filename.IndexOf(".")+1).ToUpper();
			Image img  = Helper.GetImage(filename.StartsWith("/")?filename:"/"+filename);			
			switch(sFileExt)
			{
				case "GIF":
					img.Save(context.Response.OutputStream,ImageFormat.Gif);
					break;
				case "BMP":
					img.Save(context.Response.OutputStream,ImageFormat.Bmp);
					break;
				case "JPG":
				case "JPEG":
					img.Save(context.Response.OutputStream,ImageFormat.Jpeg);
					break;
				case "PNG":
					img.Save(context.Response.OutputStream,ImageFormat.Png);
					break;
				case "ICON":
					img.Save(context.Response.OutputStream,ImageFormat.Icon);
					break;
			}				
			img.Dispose();
			context.Response.End();
		}
		#endregion
	}
}