Five methods to obtain information such as the browser version

Method 1: Use the browserinformation class.
Method 2: Use the httpbrowsercapabilities class.
Method 3: use JavaScript to explain the User-Agent string of the browser.
Method 4: use JavaScript to determine the current rendering mode of the IE rendering engine.
Method 5: Use HTML extension comments.

Method 1: Use the browserinformation class.
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Applicable to SilverlightProgram.
Provides general information about browsers, such as names, versions, and operating systems.

The following example shows how the browserinformation class provides browser information.

Using system;
Using system. Windows. controls;
Using system. Windows. browser;

Public Class Example
{
Public static void demo (system. Windows. Controls. textblock outputblock)
{
Outputblock. Text + =
"\ Nsilverlight can provide browser information: \ n" +
"\ Nbrowser name =" + htmlpage. browserinformation. Name +
"\ Nbrowser version =" + htmlpage. browserinformation. browserversion. tostring () +
"\ Nuseragent =" + htmlpage. browserinformation. useragent +
"\ Nplatform =" + htmlpage. browserinformation. Platform +
"\ Ncookiesenabled =" + htmlpage. browserinformation. cookiesenabled. tostring () +
"\ Nproductname =" + htmlpage. browserinformation. productname. tostring () +
"\ Nproductversion =" + htmlpage. browserinformation. productversion. tostring ();
}
}

IE8 running result:

Silverlight can provide browser information:

Browser name = Microsoft Internet Explorer
Browser version = 4.0
Useragent = Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; slcc2 ;. net CLR 2.0.50727 ;. net CLR 3.5.30729 ;. net CLR 3.0.30729; Media Center PC 6.0 ;. net CLR 1.1.4322 ;. net4.0c ;. net4.0e)
Platform = Win32
Cookiesenabled = true
Productname = MSIE
Productversion = 8.0

Safari running result:

Silverlight can provide browser information:

Browser name = Netscape
Browser version = 5.0
Useragent = Mozilla/5.0 (Windows NT 6.1) applewebkit/534.50 (khtml, like gecko) version/5.1 Safari/534.50
Platform = Win32
Cookiesenabled = true
Productname = Safari
Productversion = 534.50

Method 2: Use the httpbrowsercapabilities class.
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Applicable to ASP. NET programs.

System. Web. httpbrowsercapabilities browser = request. browser;
String S = "browser capabilities \ n"
+ "Type =" + browser. Type + "\ n"
+ "Name =" + browser. browser + "\ n"
+ "Version =" + browser. Version + "\ n"
+ "Major version =" + browser. majorversion + "\ n"
+ "Minor version =" + browser. minorversion + "\ n"
+ "Platform =" + browser. Platform + "\ n"
+ "Is Beta =" + browser. Beta + "\ n"
+ "Is crawler =" + browser. crawler + "\ n"
+ "Is AOL =" + browser. AoL + "\ n"
+ "Is Win16 =" + browser. Win16 + "\ n"
+ "Is Win32 =" + browser. Win32 + "\ n"
+ "Supports frames =" + browser. frames + "\ n"
+ "Supports tables =" + browser. Tables + "\ n"
+ "Supports cookies =" + browser. Cookies + "\ n"
+ "Supports VBScript =" + browser. VBScript + "\ n"
+ "Supports JavaScript =" + browser. Javascript + "\ n"
+ "Supports Java applets =" + browser. javaapplets + "\ n"
+ "Supports ActiveX controls =" + browser. activexcontrols + "\ n ";

 

Httpbrowsercapabilities B = request. browser;
Response. Write ("browser name and version:" + B. Type + "<br> ");
Response. Write ("name:" + B. browser + "<br> ");
Response. Write ("version:" + B. Version + "<br> ");
Response. Write ("operating platform:" + B. Platform + "<br> ");
Response. Write ("supported frameworks:" + B. frames + "<br> ");
Response. Write ("table supported:" + B. Tables + "<br> ");
Response. Write ("whether cookies are supported:" + B. Cookies + "<br> ");

Browser name and version: IE6
Name: IE
Version: 6.0
Operating Platform: WINXP
Supported framework: True
Table supported: True
Whether cookies are supported: True

 

If (page. Request. browser. ecmascriptversion. Major> 0 & page. Request. browser. w3cdomversion. Major> 0) // you can check whether scripts are supported.
{
Response. Write ("browser name and version:" + Page. Request. browser. Type + "<br/> ");
Response. Write ("browser version:" + Page. Request. browser. Version + "<br/> ");
Response. Write ("main browser version:" + Page. Request. browser. majorversion + "<br/> ");
Response. Write ("browser name:" + Page. Request. browser. browser );
}

 

method 3: use JavaScript to explain the browser's User-Agent string:
================================================= ===============< br> View plaincopy to clipboardprint?
function getinternetexplorerversion ()
// returns the version of Internet Explorer or A-1
// (indicating the use of another browser ).
{< br> var Rv =-1; // return value assumes failure.
If (navigator. appname = 'Microsoft Internet Explorer ')
{< br> var UA = navigator. useragent;
var Re = new Regexp ("MSIE ([0-9] {1 ,}[/. 0-9] {0,}) ");
If (re.exe C (UA )! = NULL)
Rv = parsefloat (Regexp. $1);
}< br> return RV;
}< br> function checkversion ()
{< br> var MSG = "you're not using Internet Explorer. ";
var ver = getinternetexplorerversion ();

If (ver>-1)
{< br> If (ver> = 8.0)
MSG = "you're using a recent copy of Internet Explorer. "
else
MSG =" You shoshould upgrade your copy of Internet Explorer. ";
}< br> alert (MSG);
}< br> function getinternetexplorerversion ()
// returns the version of Internet Explorer or A-1
// (indicating the use of another browser ).
{< br> var Rv =-1; // return value assumes F Ailure.
If (navigator. appname = 'Microsoft Internet Explorer ')
{< br> var UA = navigator. useragent;
var Re = new Regexp ("MSIE ([0-9] {1 ,}[/. 0-9] {0,}) ");
If (re.exe C (UA )! = NULL)
Rv = parsefloat (Regexp. $1);
}< br> return RV;
}< br> function checkversion ()
{< br> var MSG = "you're not using Internet Explorer. ";
var ver = getinternetexplorerversion ();

If (ver>-1)
{
If (ver >=8.0)
MSG = "you're using a recent copy of Internet Explorer ."
Else
MSG = "You shocould upgrade your copy of Internet Explorer .";
}
Alert (MSG );
}

 

Method 4: use JavaScript to determine the current rendering mode of the IE rendering engine:
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Engine = NULL;
If (window. Navigator. appname = "Microsoft Internet Explorer ")
{
// This is an IE browser. What mode is the engine in?
If (document.doc umentmode) // IE8
Engine = document.doc umentmode;
Else // ie 5-7
{
Engine = 5; // assume quirks mode unless proven otherwise
If (document. compatmode)
{
If (document. compatmode = "css1compat ")
Engine = 7; // standards mode
}
}
// The Engine Variable now contains the document compatibility mode.
}
Engine = NULL;
If (window. Navigator. appname = "Microsoft Internet Explorer ")
{
// This is an IE browser. What mode is the engine in?
If (document.doc umentmode) // IE8
Engine = document.doc umentmode;
Else // ie 5-7
{
Engine = 5; // assume quirks mode unless proven otherwise
If (document. compatmode)
{
If (document. compatmode = "css1compat ")
Engine = 7; // standards mode
}
}
// The Engine Variable now contains the document compatibility mode.
}

 

 

Method 5: Use the HTML extension comment statement:
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<! -- [If! IE] -->

You're not using Internet Explorer.