.NET Standard 1.2 - FileVersionInfo does not exist

Follow the code below:

public static string GetVersion()
{
    return FileVersionInfo
                     .GetVersionInfo(Assembly.GetExecutingAssembly().Location)
                     .ProductVersion;
}

I get error:

  

CS0103 The name "FileVersionInfo" does not exist in the current context

  

CS0117 "Assembly" does not contain a definition for "GetExecutingAssembly"

  

I returned .NetStandard with the older version and get the above errors.

Is there another alternative to get the package version?