Accord.IO.ExcelReader.initialize C# (CSharp) Метод

        private void initialize(string path, bool hasHeaders, bool hasMixedData)
        {
            string fullPath = Path.GetFullPath(path);
            string extension = Path.GetExtension(path);

            if (!File.Exists(fullPath))
                throw new FileNotFoundException("File could not be found.", fullPath);

            string tempFileName = Path.GetTempFileName();
            File.Copy(fullPath, tempFileName, true);

            // Reader Settings
            HasHeaders = hasHeaders;
            HasMixedData = hasMixedData;

            switch (extension)
            {
                case ".xls": Version = "Excel 8.0"; break; // Excel 95-2003
                case ".xlsx": Version = "Excel 12.0"; break; // Excel 2007+
                default: throw new ArgumentException("File type could not be determined by file extension.", "path");
            }

            if (IntPtr.Size == 4 && extension == ".xls")
                Provider = "Microsoft.Jet.OLEDB.4.0";   // for x86/95-2003
            else Provider = "Microsoft.ACE.OLEDB.12.0"; // for x64/95-2007+

            var strBuilder = new DbConnectionStringBuilder();

            strBuilder.Add("Provider", Provider);
            strBuilder.Add("Data Source", tempFileName);
            strBuilder.Add("Extended Properties", Version + ";" +
                "HDR=" + (HasHeaders ? "Yes" : "No") + ';' +
                "Imex=" + (HasMixedData ? "2" : "0") + ';');
            strConnection = strBuilder.ToString();
        }