Posts Tagged ‘.NET’

How to customize MSI installer using Add-in Express ClickTwice custom actions

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

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

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

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

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

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

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

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

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

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 →

Exception from HRESULT 0x800A01A8 in PowerPoint solutions

On an example of a simple scenario, this article demonstrates what causes 0x800A01A8 and how to avoid it in C#, VB.NET, VBA, Delphi. Exception from HRESULT: 0x800A01A8 is also known as OLE error 800A01A8 and also known as Object Required.... Read the rest of this entry →

Creating Microsoft InfoPath add-ins in Visual Studio with Add-in Express

Earlier this year, Microsoft has also announced that it will discontinue InfoPath to pursue a more integrated experience for Office forms. So look out for some InfoPath features being integrated into Word, Access and SharePoint in the future! ... Read the rest of this entry →

PowerPoint UI Customization: custom ribbons, toolbars, menus

In my last article, I discussed the PowerPoint object model. Today, I want to discuss the various ways we can customize the PowerPoint user interface... Read the rest of this entry →

Project 2013 UI customization

When it comes to developing add-ins for Microsoft Project you cannot be blamed for feeling that MS Project is a bit of a second-rate citizen in the MS Office suite of products. Its object model does not feel quite as polished as the Microsoft Word, Outlook, PowerPoint and Excel object models... Read the rest of this entry →

How to create and modify Outlook-specific files

Microsoft Outlook produces and uses a variety of file types. The most common and well known fields are either .pst or .ost files. These two file types are known as Outlook Data Files, the .pst file is known as the Personal Outlook Data file and stores you messages and other Outlook items... Read the rest of this entry →

Create a status report generator using Excel and Outlook: C# sample

Today, I'll show you how to create a status report using Excel and Outlook. This add-in sample will run within Excel. The user will have a button to click that starts the report process. Instead of creating a new workbook or worksheet, the add-in will insert the task status report into the existing spreadsheet... Read the rest of this entry →

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