为什么我无法访问 C:\WINDOWS\assembly\GAC 文件夹？

Question

I find the path of Microsoft.Office>interop.Excel under the Solution/References is

C:\WINDOWS\assembly\GAC\Microsoft.Office.Interop.Excel\11.0.0.0__71e9bce111e9429c\Microsoft.Office.Interop.Excel.dll

However, such a file doesn't exist on my C:\WINDOWS\assembly\GAC at all. Further, there is not GAC folder under C:\WINDOWS\assembly.

Any idea?

Answer 1

Use the command prompt to navigate there. Windows Explorer has an extension that runs for the assembly folder, hiding some of the details.

Here is a post on how to turn it off. http://geekswithblogs.net/pavelka/archive/2006/05/05/WindowsExplorerAndTheGlobalAssemblyCache.aspx or http://weblogs.asp.net/jkey/archive/2003/02/25/3006.aspx

Answer 2

It is propably easiest to type to following in Start->Run: %windir%\assembly\gac

Some people use the subst command to map a drive letter to the GAC: SUBST [Drive letter]: “C:\Windows\assembly”

Personally I would get a hold of the Office Primary Interop Assemblies (Here is the PIA for 2010) , they should contain the assembly you need

Answer 3

If you want to disable the GAC shell extension -

run regedit - navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Fusion create DisableCacheViewer DWORD - set the value to 0x1 .

After this open the assembly folder and you should see the sub folders and navigate into them.

But if you want to copy the assemblies from them -I'm not sure why? In you case you want Excel PIA's. All the Office versions also provide PIAs

Here are the PIA's for Office 2007.