Finalize
https://msdn.microsoft.com/en-us/library/system.object.finalize%28v=vs.110%29.aspx
https://msdn.microsoft.com/en-us/library/system.object.finalize%28v=vs.100%29.aspx
Dispose
https://msdn.microsoft.com/en-us/library/b1yfkh5e%28v=vs.110%29.aspx
https://msdn.microsoft.com/en-us/library/fs2xkftw%28v=vs.110%29.aspx
https://msdn.microsoft.com/library/b1yfkh5e%28v=vs.100%29.aspx
SafeHandle
https://msdn.microsoft.com/en-us/library/system.runtime.interopservices.safehandle%28v=vs.100%29.aspx
GC
https://msdn.microsoft.com/en-us/library/system.gc%28v=vs.110%29.aspx
http://www.cnblogs.com/yukaizhao/archive/2011/11/23/dot_net_GC_1.html
Finalize()、Dispose()、SafeHandle、GC
原文：http://www.cnblogs.com/lilei9110/p/5207232.html