wpf - 在 WPF 中检测浏览器版本

Question

是否可以找出浏览器托管应用程序 (XBAP) 在哪个浏览器版本中运行（例如 IE6、IE7 或 IE8）？我想从 XBAP 中找出浏览器版本。

Answer 1

在微软论坛的一些帮助下，我被引导到了一个最终可行的方向。下面是 C++.NET 中的概念证明 (.

using namespace System::Windows::Forms;

[STAThread]
String^ GetBrowserVersion() {
   String^ strResult = String::Empty;
   WebBrowser^ wb = gcnew WebBrowser();            
   String^ strJS = "<SCRIPT>function GetUserAgent() { return navigator.userAgent; }</SCRIPT>";
   wb->DocumentStream = gcnew MemoryStream( ASCIIEncoding::UTF8->GetBytes(strJS) );            
   while ( wb->ReadyState != WebBrowserReadyState::Complete ) {
      Application::DoEvents();
   }
   String^ strUserAgent = (String^)wb->Document->InvokeScript("GetUserAgent");
   wb->DocumentStream->Close();
   String^ strBrowserName = String::Empty;
   int i = -1;
   if ( ( i = strUserAgent->IndexOf( "MSIE" ) ) >= 0 ) {          
      strBrowserName = "Internet Explorer";
   } else if ( ( i = strUserAgent->IndexOf( "Opera" ) ) >= 0 ) {
      strBrowserName = "Opera";
   } else if ( ( i = strUserAgent->IndexOf( "Chrome" ) ) >= 0 ) {
      strBrowserName = "Chrome";
   } else if ( ( i = strUserAgent->IndexOf( "FireFox" ) ) >= 0 ) {
      strBrowserName = "FireFox";
   }
   if ( i >= 0 ) {
      int iStart = i + 5;
      int iLength = strUserAgent->IndexOf( ';', iStart ) - iStart;
      strResult = strBrowserName + " " + strUserAgent->Substring( iStart, iLength );
   }
   return strResult;
}

Answer 2

我想你的意思是 Silverlight 而不是 WPF？（它们是独立的技术，尽管相似）。

看看System.Windows.Browser.BrowserInformation类

具体来说

System.Windows.Browser.BrowserInformation.BrowserVersion

从上面的 MSDN 页面：

using System;

使用 System.Windows.Controls；使用 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() + "\n";

   }
}

Answer 3

int BrowserVer;
using (var wb = new System.Windows.Forms.WebBrowser())
{
  BrowserVer = wb.Version.Major;
}