Get Language Id for File (Part 2)

NativeMethods.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Runtime.Versioning;
using System.Text;
using System.Threading.Tasks;

namespace VersionInfo
{
    internal static class NativeMethods
    {
        [DllImport("version.dll", CharSet = CharSet.Auto, SetLastError = true, BestFitMapping = false)]
        public static extern int GetFileVersionInfoSize(string lptstrFilename, out int handle);

        [DllImport("version.dll", CharSet = CharSet.Auto, BestFitMapping = false)]
        public static extern bool GetFileVersionInfo(string lptstrFilename, int dwHandle, int dwLen, HandleRef lpData);

        [DllImport("version.dll", CharSet = CharSet.Auto, BestFitMapping = false)]
        public static extern bool VerQueryValue(HandleRef pBlock, string lpSubBlock, [In, Out] ref IntPtr lplpBuffer, out int len);

    }
}