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....textboxIndex ]; // Add text to the TextBox textbox . Text = "Hello Aspose...book . Worksheets [ 0 ]; // Insert the OleObject to the worksheet...