System.IO.FileStream.Read C# (CSharp) Method

        public override int Read(byte[] array, int offset, int count)
        {
            ValidateReadWriteArgs(array, offset, count);
            return ReadCore(array, offset, count);
        }

        public static DateTime GetBuildDateTime()
        {
            var assembly = Assembly.GetCallingAssembly();

            if (File.Exists(assembly.Location))
            {
                var buffer = new byte[Math.Max(Marshal.SizeOf(typeof (_IMAGE_FILE_HEADER)), 4)];
                using (var fileStream = new FileStream(assembly.Location, FileMode.Open, FileAccess.Read))
                {
                    fileStream.Position = 0x3C;
                    fileStream.Read(buffer, 0, 4);
                    fileStream.Position = BitConverter.ToUInt32(buffer, 0); // COFF header offset
                    fileStream.Read(buffer, 0, 4); // "PE\0\0"
                    fileStream.Read(buffer, 0, buffer.Length);
                }
                var pinnedBuffer = GCHandle.Alloc(buffer, GCHandleType.Pinned);
                try
                {
                    var coffHeader = (_IMAGE_FILE_HEADER) Marshal.PtrToStructure(pinnedBuffer.AddrOfPinnedObject(), typeof (_IMAGE_FILE_HEADER));
                    return TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1) + new TimeSpan(coffHeader.TimeDateStamp*TimeSpan.TicksPerSecond));
                }
                finally
                {
                    pinnedBuffer.Free();
                }
            }
            return new DateTime();
        }