using?System;
using?System.Collections.Generic;
using?System.Linq;
using?System.Web;

namespace?dhtmlxForm
{
????///?

????///?Summary?description?for?dhtmlxform_item_upload
????///?

????public?class?dhtmlxform_item_upload?:?IHttpHandler
????{

????????public?void?ProcessRequest（HttpContext?context）
????????{
????????????/*
????????????HTML5/FLASH?MODE
????????????（MODE?will?detected?on?client?side?automaticaly.?Working?mode?will?passed?to?server?as?GET?param?“mode“）
????????????response?format
????????????if?upload?was?good?you?need?to?specify?state=true?and?name?-?will?passed?in?form.send（）?as?serverName?param
????????????{state:?‘true‘?name:?‘filename‘}
????????????*/
????????????string?filename?=?““;
????????????
????????????if?（context.Request[“mode“]?==?“html5“?||?context.Request[“mode“]?==?“flash“）?{???????????????
	????????????filename?=?context.Request.Files[“file“].FileName;
	????????????context.Response.ContentType?=?“text/json“;
	????????????context.Response.Write（“{state:?true?name:‘“?+?filename.Replace（“‘““\\‘“）+“‘}“）;
????????????}

????????????/*
????????????HTML4?MODE
????????????response?format:
????????????to?cancel?uploading
????????????{state:?‘cancelled‘}
????????????if?upload?was?good?you?need?to?specify?state=true?name?-?will?passed?in?form.send（）?as?serverName?param?size?-?filesize?to?update?in?list
????????????{state:?‘true‘?name:?‘filename‘?size:?1234}
????????????*/

????????????if?（context.Request[“mode“]?==?“html4“）?{
????????????	????context.Response.ContentType?=?“text/html“;
	????????????if?（context.Request[“action“]?==?“cancel“）?{
		????????????context.Response.Write（“{state:‘cancelled‘}“）;
	????????????}?else?{
		????????????filename?=?context.Request.Files[“file“].FileName;	???		?????????
		?????????????context.Response.Write（“{state:?true?name:‘“?+?filename.Replace（“‘““\\‘“）+“‘?size:“?+?context.Request.Files[“file“].ContentLength+“}“）;
	????????????}
????????????}
????????????
????????}

????????public?bool?IsReusable
????????{
????????????get
????????????{
????????????????return?false;
????????????}
????????}
????}
}