how to find if dll is installed in GAC

I have the path of some dlls like -

reference.Path

"C:\\WINDOWS\\Microsoft.NET\\Framework\\v2.0.50215\\System.Xml.dll"

reference.Path

"C:\\JaproTestPerforce\\JaproTestWorkspace\\MasterProject\\dev\\src\\_Ma

sterSub1Lib\\cs\\obj\\Debug\\MasterSub1Lib.dll"

Now I need to find if these dlls are installed in GAC!

Is there any .NET framework provided class to find this out? (NOT DURING RUNTIME!)

The only I an think of is to find if the file is in

"C:\\WINDOWS\\Microsoft.NET\\Framework\"..

Is there any better way of doing this?

Any Help would be appreciated.