Posts Tagged ‘.NET’
Releasing COM objects: Garbage Collector vs. Marshal.RelseaseComObject
Andrei Smolin | July 20th, 2020
Just recently we've got a comment declaring one of our blogs on releasing COM objects "wrong and misleading": the author says Marshal.ReleasingComObject() and related things made him spend "lots of time on writing code that is totally unnecessary" and provides many links supporting the idea that you can use GC.Collect() to get rid of non-released COM objects.... Read the rest of this entry →
Office from Microsoft Store: a spreading source of issues
Andrei Smolin | February 27th, 2019
The number of users having the Office version installed from Microsoft Store increases every day as computer vendors install it by default; see e.g. this support article from Dell. Per-user add-ins and some per-machine add-ins may run into a severe issue with that Office version. The issue is: the add-in uses old versions... Read the rest of this entry →
Support for Office 2019 is added to Add-in Express for Office and .net
Dmitry Kostochko | November 23rd, 2018
Version 9.2 of Add-in Express for Office and .net is published, and we now announce full support for all versions of Office 2000 through 2019 32-bit and 64-bit... Read the rest of this entry →
Version 9.0 of Add-in Express for Office is out!
Dmitry Kostochko | May 7th, 2018
Long-term customers of Add-in Express know that we usually sim-ship new releases with new versions of Microsoft Office. This time is different. While Microsoft guys are probably still working on the new features of Office 2019, the new major version of Add-in Express for Office and .net is live already... Read the rest of this entry →
Add-in Express for Office issues on multiple monitors with different DPI settings
Andrei Smolin | December 20th, 2017
Microsoft has published Office 2016 build 8828.2010 through its Office Insider update channel. That build supports multiple monitors with different DPI settings; the support relies on the API changes provided by Windows 10 Creators Update.... Read the rest of this entry →
Updating Office COM add-ins automatically
Andrei Smolin | November 10th, 2017
To test the example described below, download and run the application installing the sample COM add-in. When the add-in is installed, you start Excel 2000 - 2016 and find the add-in in the UI. Leave Excel open and in a couple of minutes, you'll get a notification suggesting installing an update... Read the rest of this entry →
How to customize MSI installer using Add-in Express ClickTwice custom actions
Andrei Smolin | February 2nd, 2017
Let's start with the conclusion: you can deeply customize the UI and behavior of the MSI installer of your Add-in Express based Office extension using a ClickTwice custom action. To see how this works, build the project below, install the add-in by starting the MSI installer, and have a closer look at that installer's UI... Read the rest of this entry →
Localization of Office add-ins using forms-based resources
Dmitry Kostochko | December 20th, 2016
The article describes how to create a localized version of an Office add-in by using regular forms-based resources without having to apply them manually to each component, form or control... Read the rest of this entry →
Add-in Express sim-ships with Visual Studio 2017 RC
Dmitry Kostochko | December 9th, 2016
Last month Microsoft published Release Candidate of Visual Studio 2017. We, as Microsoft Visual Studio Industry Partner, were invited to support this version at the RC stage, and we were happy to seize the opportunity... Read the rest of this entry →
Introducing automatic updates for Office extensions
Andrei Smolin | November 30th, 2016
Version 8.3 of Add-in Express for Office and .net added support for automatic updates when using ClickTwice – MSI-based web deployment technology, this technology is closely tied with Add-in Express... Read the rest of this entry →
Office context menu add-in for Excel, Outlook, Word, PowerPoint
Andrei Smolin | April 15th, 2015
The blog is about an add-in (with the source code) that adds a button to all context menus of Excel, Outlook, PowerPoint, Project, Publisher, Visio and Word in Office 2010-2013. The button shows the name of the context menu.... Read the rest of this entry →
Working with Outlook HTMLBody – a guide for Office developers
Pieter van der Westhuizen | February 23rd, 2015
If you've ever tried to design an attractive and somewhat complex e-mail message using Microsoft Outlook and HTML, chances are you very quickly realized that the Outlook mail message body format performs rather differently than a normal web browser... Read the rest of this entry →
How to implement auto-update for Office add-ins
Pieter van der Westhuizen | February 12th, 2015
Automatic updates for software applications' mobile apps have become an everyday occurrence for most users. For a user it provides a level of comfort to know that their software is always up to date with the latest and greatest version. It could also be a source of irritation for many users depending on the frequency of updates – not many users would be happy upgrading to a new version every day... Read the rest of this entry →
Working with Outlook attachments programmatically: C# code examples
Pieter van der Westhuizen | January 23rd, 2015
Many Outlook developers have been faced with programmatically accessing and working with Outlook Item attachments. All Outlook items have the Attachments property, which means attachments can be added to MailItem, ContactItem and AppointmentItem items, to name a few. In this article we'll explore some facets of handling and interacting with attachments in Outlook... Read the rest of this entry →
Sending and updating Outlook Calendar’s appointments and meeting requests
Pieter van der Westhuizen | January 16th, 2015
2015 is here, and from all of us at Add-in Express we wish you a very prosperous year. We'll kick off this year by taking a closer look at Microsoft Outlook appointments and meetings... Read the rest of this entry →
How to access Outlook from HTML and JavaScript based add-ins
Pieter van der Westhuizen | November 26th, 2014
When Microsoft announced their new Office development platform, which would allow developers to create MS Office Apps using HTML and JavaScript, I was very excited about the idea. Unfortunately, I quickly learned that I simply could not accomplish the same things I can with the standard Office Object Model than with the new Office JavaScript object model... Read the rest of this entry →