This sample shows how to build an Excel add-in using .NET Blazor technologies. Blazor Webassembly allows you to build Office Add-ins using .NET, C#, and JavaScript to interact with the Office JS API.

Demonstrates how to use the JavaScript API for Office to bind an add-in to a named table in Microsoft Excel 2013 or Microsoft Word 2013, extract data from the table, react to events in the table, and ...

Before we go further, it is important to note that this is just a proof of concept and to even use custom functions in Excel, you first need to be using the Office Insider version of Excel and to ...

In the well-established Office Ready-Fire-Aim tradition, Microsoft adds two new “features” that beg to be abused. Details appeared at Build, and the bad guys already have their keyboards primed. Once ...

Javascript custom functions are now supported in the Insider program's Excel (build 9325) so that developers can extend Excel's built-in function set. Security researcher Charles Dirderman immediately ...

At its Ignite conference, Microsoft today announced an update to Excel that brings a new JavaScript API to the venerable spreadsheet app. With this new API, developers will be able to create custom ...

All products featured on WIRED are independently selected by our editors. However, we may receive compensation from retailers and/or from purchases of products through these links. Learn more. The ...

Microsoft has added the ability for users to create custom Javascript functions in Excel spreadsheets, creating concern among security experts. According to Excel program managers Michael Saunders and ...