C#将Word或Excel文档转换为Html文件

    public static IConverter Converter(string fullFilePath, string fileToSave)
    {
        switch (Path.GetExtension(fullFilePath).ToLower())
        {
            case ".doc":
            case ".docx":
            case ".dot":
            case ".dotx":
            case ".rtf":
                return new DocToHtml { FileToSave = fileToSave, FullFilePath = fullFilePath };
            case ".xls":
            case ".xlsx":
                return new XlsToHtml { FileToSave = fileToSave, FullFilePath = fullFilePath };
            default:
                throw new NotSupportedException();
        }
    }

    static void Main(string[] args)
    {
        var converter = ConverterLocator.Converter(@"r:\1.xlsx", @"r:\1.html");
        var html = converter.Convert();
    }