如果用 .NET 创建一个空的页面&＃xff0c;.aspx 文件内容如下。
代码段一
<%&＃64; Page Language&＃61;"C#" AutoEventWireup&＃61;"true" CodeFile&＃61;"Default.aspx.cs" Inherits&＃61;"_Default" %>
DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns&＃61;"http://www.w3.org/1999/xhtml"> <head runat&＃61;"server"> <title>Untitled Pagetitle> head> <body> <form id&＃61;"form1" runat&＃61;"server"> <div> div> form> body> html>
以上页面没有任何控件。然后用 IE 查看它的源文件。如下所示。
代码段二
DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns&＃61;"http://www.w3.org/1999/xhtml"> <head> <title>Untitled Pagetitle> head> <body> <form name&＃61;"form1" method&＃61;"post" action&＃61;"Default.aspx" id&＃61;"form1"> <div> <input type&＃61;"hidden" name&＃61;"__VIEWSTATE" id&＃61;"__VIEWSTATE" value&＃61;"/wEPDwUJNzgzNDMwNTMzZGT8XigVHlmkk&＃43;BXiblfwYUp8bVAIA&＃61;&＃61;" /> div> <div> div> form> body> html>
即便没有任何控件&＃xff0c;但在它的源代码文件中还是有个隐藏域。如果向这个页面添加一个 HTML 文本框&＃xff0c;.aspx 文件内容如下所示。
代码段三
<%&＃64; Page Language&＃61;"C#" AutoEventWireup&＃61;"true" CodeFile&＃61;"Default.aspx.cs" Inherits&＃61;"_Default" %>
DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns&＃61;"http://www.w3.org/1999/xhtml"> <head runat&＃61;"server"> <title>Untitled Pagetitle> head> <body> <form id&＃61;"form1" runat&＃61;"server"> <div> <input id&＃61;"Text1" type&＃61;"text" />div> form> body> html>
再查看它的源文件&＃xff0c;如下所示。
代码段四
DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns&＃61;"http://www.w3.org/1999/xhtml"> <head> <title>Untitled Pagetitle> head> <body> <form name&＃61;"form1" method&＃61;"post" action&＃61;"Default.aspx" id&＃61;"form1"> <div> <input type&＃61;"hidden" name&＃61;"__VIEWSTATE" id&＃61;"__VIEWSTATE" value&＃61;"/wEPDwUJNzgzNDMwNTMzZGT8XigVHlmkk&＃43;BXiblfwYUp8bVAIA&＃61;&＃61;" /> div> <div> <input id&＃61;"Text1" type&＃61;"text" /> div> form> body> html>
此时&＃xff0c;除了隐藏域&＃xff0c;就是真正的 HTML 文本框。如果向这个页面添加一个 ASP.NET 控件&＃xff0c;.aspx 文件内容如下所示。
代码段五
<%&＃64; Page Language&＃61;"C#" AutoEventWireup&＃61;"true" CodeFile&＃61;"Default.aspx.cs" Inherits&＃61;"_Default" %>
DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns&＃61;"http://www.w3.org/1999/xhtml"> <head runat&＃61;"server"> <title>Untitled Pagetitle> head> <body> <form id&＃61;"form1" runat&＃61;"server"> <div> <asp:TextBox ID&＃61;"TextBox1" runat&＃61;"server">asp:TextBox>div> form> body> html>
查看它的源文件&＃xff0c;如下所示。
代码段六
DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns&＃61;"http://www.w3.org/1999/xhtml"> <head> <title>Untitled Pagetitle> head> <body> <form name&＃61;"form1" method&＃61;"post" action&＃61;"Default.aspx" id&＃61;"form1"> <div> <input type&＃61;"hidden" name&＃61;"__VIEWSTATE" id&＃61;"__VIEWSTATE" value&＃61;"/wEPDwUJMjgzMDgzOTgzZGRQ4cwjxigvH0cn0g6XWSHkZbN2Lg&＃61;&＃61;" /> div> <div> <input name&＃61;"TextBox1" type&＃61;"text" id&＃61;"TextBox1" />div> <div> <input type&＃61;"hidden" name&＃61;"__EVENTVALIDATION" id&＃61;"__EVENTVALIDATION" value&＃61;"/wEWAgKo3JKxDwLs0bLrBrEWYCZVJeodiUUqcdX2kqmQDHGa" />div> form> body> html>
此时的源文件&＃xff0c;多了一个。两个隐藏域&＃xff0c;分别是 "__VIEWSTATE" 和 "__EVENTVALIDATION"&＃xff0c;再就是 HTML 文本框。
另外&＃xff0c;我们知道 ASP.NET 程序中&＃xff0c;有几个一直存在的对象&＃xff0c;Server 对象&＃xff0c;Response 对象&＃xff0c;Request 对象等等。如果我们调试一下 ASP.NET 程序&＃xff0c;看看 Response 和 Request 对象都有些什么。
对于 Request 对象&＃xff0c;你可能看到如下一堆信息。
代码段七
AcceptTypes: {Dimensions:[1]}
AnonymousID: null
ApplicationPath: "/"
AppRelativeCurrentExecutionFilePath: "~/Default.aspx"
Browser: {System.Web.Mobile.MobileCapabilities}
ClientCertificate: {System.Web.HttpClientCertificate}
ContentEncoding: {System.Text.UTF8Encoding}
ContentLength: 0
ContentType: ""
COOKIEs: {System.Web.HttpCOOKIECollection}
CurrentExecutionFilePath: "/Default.aspx"
FilePath: "/Default.aspx"
Files: {System.Web.HttpFileCollection}
Filter: {System.Web.HttpInputStreamFilterSource}
Form: {}
Headers: {Connection&＃61;Keep-Alive&;;Accept&＃61;*%2f*&Accept-Encoding&＃61;gzip%2c&＃43;deflate&Accept-Language&＃61;zh-cn&Host&＃61;localhost%3a1234&User-Agent&＃61;Mozilla%2f4.0&＃43;(compatible%3b&＃43;MSIE&＃43;7.0%3b&＃43;Windows&＃43;NT&＃43;5.2%3b&＃43;.NET&＃43;CLR&＃43;1.1.4322%3b&＃43;.NET&＃43;CLR&＃43;2.0.50727)&UA-CPU&＃61;x86}
HttpMethod: "GET"
InputStream: {System.Web.HttpInputStream}
IsAuthenticated: false
IsLocal: true
IsSecureConnection: false
LogonUserIdentity: {System.Security.Principal.WindowsIdentity}
Params: {ALL_HTTP&＃61;HTTP_CONNECTION%3aKeep-Alive%0d%0aHTTP_ACCEPT%3a*%2f*%0d%0aHTTP_ACCEPT_ENCODING%3agzip%2c&＃43;deflate%0d%0aHTTP_ACCEPT_LANGUAGE%3azh-cn%0d%0aHTTP_HOST%3alocalhost%3a1234%0d%0aHTTP_USER_AGENT%3aMozilla%2f4.0&＃43;(compatible%3b&＃43;MSIE&＃43;7.0%3b&＃43;Windows&＃43;NT&＃43;5.2%3b&＃43;.NET&＃43;CLR&＃43;1.1.4322%3b&＃43;.NET&＃43;CLR&＃43;2.0.50727)%0d%0aHTTP_UA_CPU%3ax86%0d%0a&;;ALL_RAW&＃61;Connection%3a&＃43;Keep-Alive%0d%0aAccept%3a&＃43;*%2f*%0d%0aAccept-Encoding%3a&＃43;gzip%2c&＃43;deflate%0d%0aAccept-Language%3a&＃43;zh-cn%0d%0aHost%3a&＃43;localhost%3a1234%0d%0aUser-Agent%3a&＃43;Mozilla%2f4.0&＃43;(compatible%3b&＃43;MSIE&＃43;7.0%3b&＃43;Windows&＃43;NT&＃43;5.2%3b&＃43;.NET&＃43;CLR&＃43;1.1.4322%3b&＃43;.NET&＃43;CLR&＃43;2.0.50727)%0d%0aUA-CPU%3a&＃43;x86%0d%0a&APPL_MD_PATH&＃61;%2fLM%2fW3SVC%2f1860662192%2fRoot&APPL_PHYSICAL_PATH&＃61;D%3a%5cMyTest%5cWebSite1%5c&AUTH_TYPE&＃61;&AUTH_USER&＃61;&AUTH_PASSWORD&＃61;&LOGON_USER&＃61;&REMOTE_USER&＃61;&CERT_COOKIE&＃61;&CERT_FLAGS&＃61;&CERT_ISSUER&＃61;&CERT_KEYSIZE&＃61;&CERT_SECRETKEYSIZE&＃61;&CERT_SERIALNUMBER&＃61;&CERT_SERVER_ISSUER&＃61;&CERT_SERVER_SUBJECT&＃61;&CERT_SUBJECT&＃61;&CONTENT_LENGTH&＃61;0&CONTENT_TYPE&＃61;&GATEWAY_INTERFACE&＃61;CGI%2f1.1&HTTPS&＃61;off&HTTPS_KEYSIZE&＃61;&H
_SECRETKEYSIZE&＃61;&;;HTTPS_SERVER_ISSUER&＃61;&HTTPS_SERVER_SUBJECT&＃61;&INSTANCE_ID&＃61;1860662192&INSTANCE_META_PATH&＃61;%2fLM%2fW3SVC%2f1860662192&LOCAL_ADDR&＃61;127.0.0.1&PATH_INFO&＃61;%2fDefault.aspx&PATH_TRANSLATED&＃61;D%3a%5cMyTest%5cWebSite1%5cDefault.aspx&QUERY_STRING&＃61;&REMOTE_ADDR&＃61;127.0.0.1&REMOTE_HOST&＃61;127.0.0.1&REMOTE_PORT&＃61;46201&REQUEST_METHOD&＃61;GET&SCRIPT_NAME&＃61;%2fDefault.aspx&SERVER_NAME&＃61;localhost&SERVER_PORT&＃61;1234&SERVER_PORT_SECURE&＃61;0&SERVER_PROTOCOL&＃61;HTTP%2f1.1&SERVER_SOFTWARE&＃61;Microsoft-IIS%2f6.0&URL&＃61;%2fDefault.aspx&HTTP_CONNECTION&＃61;Keep-Alive&HTTP_ACCEPT&＃61;*%2f*&HTTP_ACCEPT_ENCODING&＃61;gzip%2c&＃43;deflate&HTTP_ACCEPT_LANGUAGE&＃61;zh-cn&HTTP_HOST&＃61;localhost%3a1234&HTTP_USER_AGENT&＃61;Mozilla%2f4.0&＃43;(compatible%3b&＃43;MSIE&＃43;7.0%3b&＃43;Windows&＃43;NT&＃43;5.2%3b&＃43;.NET&＃43;CLR&＃43;1.1.4322%3b&＃43;.NET&＃43;CLR&＃43;2.0.50727)&HTTP_UA_CPU&＃61;x86}
Path: "/Default.aspx"
PathInfo: ""
PhysicalApplicationPath: "D://MyTest//WebSite1//"
PhysicalPath: "D://MyTest//WebSite1//Default.aspx"
QueryString: {}
RawUrl: "/Default.aspx"
RequestType: "GET"
ServerVariables: {ALL_HTTP&＃61;HTTP_CONNECTION%3aKeep-Alive%0d%0aHTTP_ACCEPT%3a*%2f*%0d%0aHTTP_ACCEPT_ENCODING%3agzip%2c&＃43;deflate%0d%0aHTTP_ACCEPT_LANGUAGE%3azh-cn%0d%0aHTTP_HOST%3alocalhost%3a1234%0d%0aHTTP_USER_AGENT%3aMozilla%2f4.0&＃43;(compatible%3b&＃43;MSIE&＃43;7.0%3b&＃43;Windows&＃43;NT&＃43;5.2%3b&＃43;.NET&＃43;CLR&＃43;1.1.4322%3b&＃43;.NET&＃43;CLR&＃43;2.0.50727)%0d%0aHTTP_UA_CPU%3ax86%0d%0a&;;ALL_RAW&＃61;Connection%3a&＃43;Keep-Alive%0d%0aAccept%3a&＃43;*%2f*%0d%0aAccept-Encoding%3a&＃43;gzip%2c&＃43;deflate%0d%0aAccept-Language%3a&＃43;zh-cn%0d%0aHost%3a&＃43;localhost%3a1234%0d%0aUser-Agent%3a&＃43;Mozilla%2f4.0&＃43;(compatible%3b&＃43;MSIE&＃43;7.0%3b&＃43;Windows&＃43;NT&＃43;5.2%3b&＃43;.NET&＃43;CLR&＃43;1.1.4322%3b&＃43;.NET&＃43;CLR&＃43;2.0.50727)%0d%0aUA-CPU%3a&＃43;x86%0d%0a&APPL_MD_PATH&＃61;%2fLM%2fW3SVC%2f1860662192%2fRoot&APPL_PHYSICAL_PATH&＃61;D%3a%5cMyTest%5cWebSite1%5c&AUTH_TYPE&＃61;&AUTH_USER&＃61;&AUTH_PASSWORD&＃61;&LOGON_USER&＃61;&REMOTE_USER&＃61;&CERT_COOKIE&＃61;&CERT_FLAGS&＃61;&CERT_ISSUER&＃61;&CERT_KEYSIZE&＃61;&CERT_SECRETKEYSIZE&＃61;&CERT_SERIALNUMBER&＃61;&CERT_SERVER_ISSUER&＃61;&CERT_SERVER_SUBJECT&＃61;&CERT_SUBJECT&＃61;&CONTENT_LENGTH&＃61;0&CONTENT_TYPE&＃61;&GATEWAY_INTERFACE&＃61;CGI%2f1.1&HTTPS&＃61;off&HTTPS_K
ZE&＃61;&;;HTTPS_SECRETKEYSIZE&＃61;&HTTPS_SERVER_ISSUER&＃61;&HTTPS_SERVER_SUBJECT&＃61;&INSTANCE_ID&＃61;1860662192&INSTANCE_META_PATH&＃61;%2fLM%2fW3SVC%2f1860662192&LOCAL_ADDR&＃61;127.0.0.1&PATH_INFO&＃61;%2fDefault.aspx&PATH_TRANSLATED&＃61;D%3a%5cMyTest%5cWebSite1%5cDefault.aspx&QUERY_STRING&＃61;&REMOTE_ADDR&＃61;127.0.0.1&REMOTE_HOST&＃61;127.0.0.1&REMOTE_PORT&＃61;46201&REQUEST_METHOD&＃61;GET&SCRIPT_NAME&＃61;%2fDefault.aspx&SERVER_NAME&＃61;localhost&SERVER_PORT&＃61;1234&SERVER_PORT_SECURE&＃61;0&SERVER_PROTOCOL&＃61;HTTP%2f1.1&SERVER_SOFTWARE&＃61;Microsoft-IIS%2f6.0&URL&＃61;%2fDefault.aspx&HTTP_CONNECTION&＃61;Keep-Alive&HTTP_ACCEPT&＃61;*%2f*&HTTP_ACCEPT_ENCODING&＃61;gzip%2c&＃43;deflate&HTTP_ACCEPT_LANGUAGE&＃61;zh-cn&HTTP_HOST&＃61;localhost%3a1234&HTTP_USER_AGENT&＃61;Mozilla%2f4.0&＃43;(compatible%3b&＃43;MSIE&＃43;7.0%3b&＃43;Windows&＃43;NT&＃43;5.2%3b&＃43;.NET&＃43;CLR&＃43;1.1.4322%3b&＃43;.NET&＃43;CLR&＃43;2.0.50727)&HTTP_UA_CPU&＃61;x86}
TotalBytes: 0
Url: {http://localhost:1234/Default.aspx}
UrlReferrer: null
UserAgent: "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.2; .NET CLR 1.1.4322; .NET CLR 2.0.50727)"
UserHostAddress: "127.0.0.1"
UserHostName: "127.0.0.1"
UserLanguages: {Dimensions:[1]}
对于 Response 对象&＃xff0c;你可能会看到如下内容。
代码段八
Buffer: true
BufferOutput: true
Cache: {System.Web.HttpCachePolicy}
CacheControl: "private"
Charset: "utf-8"
ContentEncoding: {System.Text.UTF8Encoding}
ContentType: "text/html"
COOKIEs: {System.Web.HttpCOOKIECollection}
Expires: 0
ExpiresAbsolute: {0001-1-1 0:00:00}
Filter: {System.Web.HttpResponseStreamFilterSink}
HeaderEncoding: {System.Text.UTF8Encoding}
IsClientConnected: true
IsRequestBeingRedirected: false
Output: {System.Web.HttpWriter}
OutputStream: {System.Web.HttpResponseStream}
RedirectLocation: null
Status: "200 OK"
StatusCode: 200
StatusDescription: "OK"
SuppressContent: false
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