ASP.NET 提供了幾個系統物件，可以用來存取許多相當有用的資訊，例如取得使用者IP，瀏覽器種類等等。 這類物件必須透過 Page 物件的屬性取得，包含：

• Request ：這個物件包含目前 HTTP 要求的相關資訊。
• Response ：這個物件包含回應資訊，允許您將資訊，透過 HTTP 回應給用戶端。
• Context ：這個物件提供網頁執行內容的相關資訊。
• Browser ：取得或設定關於用戶端瀏覽器的資訊。
• Server ：這個屬性提供常用的 HtmlEncode 和 MapPath 方法。
• Application ：取得目前 Web 要求的 HttpApplicationState 物件。
• Session ：這個屬性提供目前要求的工作階段（Session）資訊。
• Trace ：追蹤並顯示關於 Web 要求的執行詳細資料。

Response

Response 方法

	方法	說明
	AddHeader	Adds an HTTP header to the response stream.
	AppendCookie
	AppendHeader
	AppendToLog
	BinaryWrite	Writes binary characters to the HTTP response.
	Clear
	ClearContent
	ClearHeaders
	End	Completes the response
	Flush	強迫送出目前存放在緩衝區的資料，並清除目前存放在緩衝區的資料
	Redirect
	SetCookie
	TransmitFile
	Write	Writes a text string to the HTTP response.
	WriteFile	Writes a file to the HTTP response with buffering.
	WriteSubstitution	This allow you to dynamically update that cached output.

Response.Redirect與Server.Transfer差別

請參考：http://www.dotblogs.com.tw/jimmyyu/archive/2009/11/10/11503.aspx

Response 屬性

屬性	資料	說明
Buffer	True	If True, the response is buffered before sending it back to the user. <br> If False, the response is sent back to the user in chunks.
Cache	System.Web.HttpCachePolicy
Cookies	System.Web.HttpCookieCollection
Expires	0
ExpiresAbsolute	0001/1/1 上午 12:00:00
Filter
IsClientConnected	True	取得瀏覽端是否還處於連線狀態
Status	200 OK
StatusCode	200

Request

Request 方法

	方法	說明
	MapPath	將用戶端目前要求之 URL 的虛擬路徑對應至伺服器上的實體路徑。
	SaveAs	Saves the request to a file.
	ValidateInput	是否對透過 Cookies、Form 和 QueryString 屬性執行潛在危險之驗證

Request 屬性

屬性	資料	說明
ApplicationPath	/
AppRelativeCurrentExecutionFilePath	~/C08_Programming_the_Web_Application/WebForm2.aspx	取得應用程式的虛擬路徑
Browser	System.Web.Mobile.MobileCapabilities	取得用戶端瀏覽器的資訊。
ClientCertificate	System.Web.HttpClientCertificate
Cookies	System.Web.HttpCookieCollection	取得用戶端送出的 Cookie 的集合。
FilePath	/C08_Programming_the_Web_Application/WebForm2.aspx	目前要求的虛擬路徑。
Files	System.Web.HttpFileCollection
Filter
Headers	Cache-Control=no-cache&Connection=Keep-Alive&Content-Length=429&Content-Type=application%2fx-www-form-urlencoded&Accept=text%2fhtml%2c+application%2fxhtml%2bxml%2c+*%2f*&Accept-Encoding=gzip%2c+deflate&Accept-Language=zh-TW&Cookie=ASP.NET_SessionId%3drzsgttim0kc0sagrgm4l0nvi&Host=localhost%3a60755&Referer=http%3a%2f%2flocalhost%3a60755%2fC08_Programming_the_Web_Application%2fWebForm2.aspx&User-Agent=Mozilla%2f5.0+(compatible%3b+MSIE+9.0%3b+Windows+NT+6.1%3b+WOW64%3b+Trident%2f5.0%3b+NP06)
HttpMethod	POST
IsAuthenticated	True
IsLocal	True
IsSecureConnection	False
LogonUserIdentity	System.Security.Principal.WindowsIdentity
Params		Name	Value	說明	<br>	—	—	—	<br>	__EVENTVALIDATION	/wEWEAKy+bbNBgKf7OeoAgLw/96vBwKu+JOJCwKKkYyiBAKx6YT7DQKiotE5AveptakBAvGhyJwOApnC0/UMAu7CqaMOAvTX2fcMAuPv3sAFAqfzke4GAubYlJQIArur8Z0KILtAbiO7t33VgM69Ar+iv7lOgtaa23CBQcz9pJqpbQg=		<br>	__VIEWSTATE	/wEPDwUKLTc4NzI2MDczNmQYAQUeX19Db250cm9sc1JlcXVpcmVQb3N0QmFja0tleV9fFgIFDGNiSW5jbHVkZVVybAUKY2JTaG93VGV4dGOWKpza/lXYoFZ5KMT+pWaUtalW0DTOMQ0iHhxiDaw+		<br>	ALL_HTTP	HTTP_CACHE_CONTROL:no-cache <br>HTTP_CONNECTION:Keep-Alive <br>HTTP_CONTENT_LENGTH:420 <br>HTTP_CONTENT_TYPE:application/x-www-form-urlencoded <br>HTTP_ACCEPT:text/html, application/xhtml+xml, */* <br>HTTP_ACCEPT_ENCODING:gzip, deflate <br>HTTP_ACCEPT_LANGUAGE:zh-TW <br>HTTP_COOKIE:ASP.NET_SessionId=ent0y41l14cd4yizcegchl0o <br>HTTP_HOST:localhost:60755 <br>HTTP_REFERER:http://localhost:60755/C08_Programming_the_Web_Application/WebForm2.aspx <br>HTTP_USER_AGENT:Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; NP06)		<br>	ALL_RAW	Cache-Control: no-cache <br>Connection: Keep-Alive <br>Content-Length: 420 <br>Content-Type: application/x-www-form-urlencoded <br>Accept: text/html, application/xhtml+xml, */* <br>Accept-Encoding: gzip, deflate <br>Accept-Language: zh-TW <br>Cookie: ASP.NET_SessionId=ent0y41l14cd4yizcegchl0o <br>Host: localhost:60755 <br>Referer: http://localhost:60755/C08_Programming_the_Web_Application/WebForm2.aspx <br>User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; NP06)		<br>	APPL_MD_PATH			<br>	APPL_PHYSICAL_PATH	D:\myMCTS\VitoPractice\70-528\Practice70515\		<br>	ASP.NET_SessionId	ent0y41l14cd4yizcegchl0o		<br>	AUTH_PASSWORD			<br>	AUTH_TYPE	NTLM		<br>	AUTH_USER	VITO-2011W7\Administrator		<br>	btnParams	Request’s Params		<br>	cbShowText	on		<br>	CERT_COOKIE			<br>	CERT_FLAGS			<br>	CERT_ISSUER			<br>	CERT_KEYSIZE			<br>	CERT_SECRETKEYSIZE			<br>	CERT_SERIALNUMBER			<br>	CERT_SERVER_ISSUER			<br>	CERT_SERVER_SUBJECT			<br>	CERT_SUBJECT			<br>	CONTENT_LENGTH	420		<br>	CONTENT_TYPE	application/x-www-form-urlencoded		<br>	GATEWAY_INTERFACE			<br>	HTTP_ACCEPT	text/html, application/xhtml+xml, */*		<br>	HTTP_ACCEPT_ENCODING	gzip, deflate		<br>	HTTP_ACCEPT_LANGUAGE	zh-TW		<br>	HTTP_CACHE_CONTROL	no-cache		<br>	HTTP_CONNECTION	Keep-Alive		<br>	HTTP_CONTENT_LENGTH	420		<br>	HTTP_CONTENT_TYPE	application/x-www-form-urlencoded		<br>	HTTP_COOKIE	ASP.NET_SessionId=ent0y41l14cd4yizcegchl0o		<br>	HTTP_HOST	localhost:60755		<br>	HTTP_REFERER	http://localhost:60755/C08_Programming_the_Web_Application/WebForm2.aspx		<br>	HTTP_USER_AGENT	Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; NP06)		<br>	HTTPS			<br>	HTTPS_KEYSIZE			<br>	HTTPS_SECRETKEYSIZE			<br>	HTTPS_SERVER_ISSUER			<br>	HTTPS_SERVER_SUBJECT			<br>	INSTANCE_ID			<br>	INSTANCE_META_PATH			<br>	LOCAL_ADDR	::1		<br>	LOGON_USER	VITO-2011W7\Administrator		<br>	PATH_INFO	/C08_Programming_the_Web_Application/WebForm2.aspx		<br>	PATH_TRANSLATED	D:\myMCTS\VitoPractice\70-528\Practice70515\C08_Programming_the_Web_Application\WebForm2.aspx		<br>	QUERY_STRING			<br>	REMOTE_ADDR	::1		<br>	REMOTE_HOST	::1		<br>	REMOTE_PORT			<br>	REMOTE_USER	VITO-2011W7\Administrator		<br>	REQUEST_METHOD	POST		<br>	SCRIPT_NAME	/C08_Programming_the_Web_Application/WebForm2.aspx		<br>	SERVER_NAME	localhost		<br>	SERVER_PORT	60755		<br>	SERVER_PORT_SECURE	0		<br>	SERVER_PROTOCOL	HTTP/1.1		<br>	SERVER_SOFTWARE			<br>	URL	/C08_Programming_the_Web_Application/WebForm2.aspx			取得 QueryString、Form、Cookies 和 ServerVariables 項目的組合集合。
Path	/C08_Programming_the_Web_Application/WebForm2.aspx	取得目前要求的虛擬路徑。
PathInfo
PhysicalApplicationPath	D:\myMCTS\VitoPractice\70-528\Practice70515\	取得目前正在執行的伺服器應用程式的根目錄之實體檔案系統路徑。
PhysicalPath	D:\myMCTS\VitoPractice\70-528\Practice70515\C08_Programming_the_Web_Application\WebForm2.aspx	取得對應到要求的 URL 之實體檔案系統路徑。
QueryString	User=vito&Page=2	取得 HTTP 查詢字串變數的集合。
RawUrl	/C08_Programming_the_Web_Application/WebForm2.aspx
ServerVariables		Name	Value	說明	<br>	—	—	—	<br>	ALL_HTTP	HTTP_CACHE_CONTROL:no-cache <br>HTTP_CONNECTION:Keep-Alive <br>HTTP_CONTENT_LENGTH:438 <br>HTTP_CONTENT_TYPE:application/x-www-form-urlencoded <br>HTTP_ACCEPT:text/html, application/xhtml+xml, */* <br>HTTP_ACCEPT_ENCODING:gzip, deflate <br>HTTP_ACCEPT_LANGUAGE:zh-TW <br>HTTP_COOKIE:ASP.NET_SessionId=ent0y41l14cd4yizcegchl0o <br>HTTP_HOST:localhost:60755 <br>HTTP_REFERER:http://localhost:60755/C08_Programming_the_Web_Application/WebForm2.aspx <br>HTTP_USER_AGENT:Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; NP06)		<br>	ALL_RAW	Cache-Control: no-cache <br>Connection: Keep-Alive <br>Content-Length: 438 <br>Content-Type: application/x-www-form-urlencoded <br>Accept: text/html, application/xhtml+xml, */* <br>Accept-Encoding: gzip, deflate <br>Accept-Language: zh-TW <br>Cookie: ASP.NET_SessionId=ent0y41l14cd4yizcegchl0o <br>Host: localhost:60755 <br>Referer: http://localhost:60755/C08_Programming_the_Web_Application/WebForm2.aspx <br>User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; NP06)		<br>	APPL_MD_PATH			<br>	APPL_PHYSICAL_PATH	D:\myMCTS\VitoPractice\70-528\Practice70515\		<br>	AUTH_PASSWORD			<br>	AUTH_TYPE	NTLM		<br>	AUTH_USER	VITO-2011W7\Administrator		<br>	CERT_COOKIE			<br>	CERT_FLAGS			<br>	CERT_ISSUER			<br>	CERT_KEYSIZE			<br>	CERT_SECRETKEYSIZE			<br>	CERT_SERIALNUMBER			<br>	CERT_SERVER_ISSUER			<br>	CERT_SERVER_SUBJECT			<br>	CERT_SUBJECT			<br>	CONTENT_LENGTH	438		<br>	CONTENT_TYPE	application/x-www-form-urlencoded		<br>	GATEWAY_INTERFACE			<br>	HTTP_ACCEPT	text/html, application/xhtml+xml, */*		<br>	HTTP_ACCEPT_ENCODING	gzip, deflate		<br>	HTTP_ACCEPT_LANGUAGE	zh-TW		<br>	HTTP_CACHE_CONTROL	no-cache		<br>	HTTP_CONNECTION	Keep-Alive		<br>	HTTP_CONTENT_LENGTH	438		<br>	HTTP_CONTENT_TYPE	application/x-www-form-urlencoded		<br>	HTTP_COOKIE	ASP.NET_SessionId=ent0y41l14cd4yizcegchl0o		<br>	HTTP_HOST	localhost:60755		<br>	HTTP_REFERER	http://localhost:60755/C08_Programming_the_Web_Application/WebForm2.aspx		<br>	HTTP_USER_AGENT	Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; NP06)		<br>	HTTPS			<br>	HTTPS_KEYSIZE			<br>	HTTPS_SECRETKEYSIZE			<br>	HTTPS_SERVER_ISSUER			<br>	HTTPS_SERVER_SUBJECT			<br>	INSTANCE_ID			<br>	INSTANCE_META_PATH			<br>	LOCAL_ADDR	::1		<br>	LOGON_USER	VITO-2011W7\Administrator		<br>	PATH_INFO	/C08_Programming_the_Web_Application/WebForm2.aspx		<br>	PATH_TRANSLATED	D:\myMCTS\VitoPractice\70-528\Practice70515\C08_Programming_the_Web_Application\WebForm2.aspx		<br>	QUERY_STRING			<br>	REMOTE_ADDR	::1		<br>	REMOTE_HOST	::1		<br>	REMOTE_PORT			<br>	REMOTE_USER	VITO-2011W7\Administrator		<br>	REQUEST_METHOD	POST		<br>	SCRIPT_NAME	/C08_Programming_the_Web_Application/WebForm2.aspx		<br>	SERVER_NAME	localhost		<br>	SERVER_PORT	60755		<br>	SERVER_PORT_SECURE	0		<br>	SERVER_PROTOCOL	HTTP/1.1		<br>	SERVER_SOFTWARE			<br>	URL	/C08_Programming_the_Web_Application/WebForm2.aspx			取得 Web 伺服器變數的集合。
TotalBytes	429
Url	http://localhost:60755/C08_Programming_the_Web_Application/WebForm2.aspx	目前要求的 URL 資訊。
UrlReferrer	http://localhost:60755/C08_Programming_the_Web_Application/WebForm2.aspx	前一個要求之 UR 資訊。L
UserAgent	Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; NP06)	取得用戶端瀏覽器的字串資訊
UserHostAddress	::1
UserHostName	::1
UserLanguages	System.String[]

Server

Server 方法

	方法	說明
	ClearError
	CreateObject
	HtmlDecode
	HtmlEncode
	MapPath
	Transfer
	UrlDecode
	UrlEncode
	UrlPathEncode
S	UrlTokenDecode
S	UrlTokenEncode

Server 屬性

屬性	資料	說明
MachineName	VITO-2011W7
ScriptTimeout	30000000

Context 物件

The Page.Context property is an HttpContext object that provides access to a variety of objects related to the HTTP request and response. Many of these objects are redundant, providing access to Page members including Cache, Request, Response, Server, and Session. However, the Context object includes several unique methods:

Context 方法

	方法	說明
	AddError
	ClearError
	RewritePath	使用指定的路徑重寫 URL。

Context 屬性

屬性	資料	說明
AllErrors
IsCustomErrorEnabled	True
IsDebuggingEnabled	True
Timestamp	2012/10/2 上午 11:52:29

Browser

取得瀏覽器相關的資訊

Request.Browser 的方法

	方法	說明
	AddBrowser
	GetClrVersions	傳回安裝在用戶端的所有 .NET Framework CLR 版本。
	IsBrowser	用戶端瀏覽器是否與指定瀏覽器相同。

Request.Browser 的屬性

屬性	資料	說明
ActiveXControls	True	是否支援 ActiveX
AOL	False	是否是 AOL (America Online) 瀏覽器
BackgroundSounds	True	是否支援 <bgsounds>標籤
Browser	IE
Browsers	System.Collections.ArrayList
ClrVersion	0.0	取得用戶端安裝的 .NET Framework 版本
Cookies	True	是否支援 Cookie
Crawler	False	是否為 Web Crawler 搜尋引擎
Frames	True	是否支援 HTML 框架
IsColor	True
IsMobileDevice	False
Item	…
JavaApplets	True
JavaScript	True
JScriptVersion	5.6
MobileDeviceManufacturer	Unknown
MobileDeviceModel	Unknown
MSDomVersion	9.0
NumberOfSoftkeys	0
Platform	WinNT
Tables	True
VBScript	True
Version	9.0	取得瀏覽器完整版本號碼
W3CDomVersion	1.0
Win16	False
Win32	True

Page.Header

Page.Header 方法

	方法	說明
	ApplyStyleSheetSkin
	GetRouteUrl

Page.Header 屬性

| 屬性 | 說明 | 資料 | | — | — | — | | Style | 取得樣式表屬性集合 | System.Web.UI.CssStyleCollection | | StyleSheet | 設定網頁樣式 | c# Style bodystyle = new Style();<br>bodystyle.ForeColor = System.Drawing.Color.Blue;<br>bodystyle.BackColor = System.Drawing.Color.LightCyan;<br>Page.Header.StyleSheet.CreateStyleRule(bodystyle,null,"body");<br> <br> <br>以上程式碼，將在<head>區塊裡，產生以下樣式<br> <br>```xml

| | [Title](http://msdn.microsoft.com/zh-tw/library/system.web.ui.htmlcontrols.htmlhead.title.aspx) | 設定網頁標題 |c# Page.Header.Title = “Current tim: “ + DateTime.Now;
``` | | ViewStateMode | | Inherit | | Visible | | True |