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PO
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6698342
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0
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2011-07-14T18:44:00.963
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2011-07-14T19:14:46.820
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2011-07-14T19:14:46.820
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150605
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150605
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2947595
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2
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2
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The <code>PROCESSOR_ARCHITECTURE</code> environment variable contains the address width of the running process, which is not necessarily that of the operating system or processors. A quick way to see this is by running the following command... <pre><code>$Env:PROCESSOR_ARCHITECTURE </code></pre> ...in 32- and 64-bit PowerShell sessions and comparing the output. So, if <code>GetEnvironmentVariable("PROCESSOR_ARCHITECTURE")</code> returns <code>"AMD64"</code> then you definitely have a 64-bit process, operating systems, and processors. If it returns <code>"x86"</code> then you definitely have a 32-bit process, though you still won't know if the operating system and processors are 32- or 64-bit. If you're really after the address width of the operating system, then .NET 4 offers the <a href="http://msdn.microsoft.com/en-us/library/system.environment.is64bitoperatingsystem.aspx" rel="nofollow" title="Environment.Is64BitOperatingSystem Property on MSDN">Environment.Is64BitOperatingSystem property</a>. You can also use WMI on any version of .NET to read the <code>OSArchitecture</code> property of the <a href="http://msdn.microsoft.com/library/aa394239.aspx" rel="nofollow" title="Win32_OperatingSystem Class on MSDN">Win32_OperatingSystem class</a>: <pre><code>static string GetOSArchitecture() { var query = new WqlObjectQuery("SELECT OSArchitecture FROM Win32_OperatingSystem"); using (var searcher = new ManagementObjectSearcher(query)) using (var results = searcher.Get()) using (var enumerator = results.GetEnumerator()) { enumerator.MoveNext(); return (string) enumerator.Current.GetPropertyValue("OSArchitecture"); } } </code></pre> ...though, unfortunately, the <code>OSArchitecture</code> property only exists on Windows Vista/Server 2008 and above. For all versions of Windows since 2000, you might try p/invoking the <a href="http://msdn.microsoft.com/library/ms724381.aspx" rel="nofollow" title="GetSystemInfo function on MSDN">GetSystemInfo() function</a> and checking the <code>wProcessorArchitecture</code> member of the <a href="http://msdn.microsoft.com/library/ms724958.aspx" rel="nofollow" title="SYSTEM_INFO structure on MSDN">SYSTEM_INFO structure</a>.
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1. POWhat is the most reliable way to detect windows OS Architecture (x86,x64) on .NET 2.0
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1. PTAnswer
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1. USBACON
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1. USBACON
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