Class Libraries & REST APIs for the developers to manipulate & process Files from Word, Excel, PowerPoint, Visio, PDF, CAD & several other categories in Web, Desktop or Mobile apps. Develop & deploy on Windows, Linux, MacOS & Android platforms....Email エディタ アプリ . 添付ファイルの追加 メールに添付...an instance of MailMessage class MailMessage message = new MailMessage...