Custom task panes for Microsoft Office
Word, PowerPoint, Outlook, Excel in VB.NET, C#
Introduction into advanced Outlook regions and advanced task panes
Add-in Express allows creating advanced Outlook regions for Outlook 2019 - 2010 and advanced Office task panes for Excel, Word and PowerPoint 2019 - 2000.
Here are the three main points you should be aware of:
Note. Anywhere on this page, as well as on other pages, a term in angle brackets, such as <Manager> or <Form> above, specifies a component, class, or class member, the actual name of which is application-dependent. Every such term is covered on the corresponding page of this manual.
In Add-in Express terms, an advanced Office task pane is a subpane, or a dock, of the main Excel, Word or PowerPoint window that may host native .NET forms. The screenshot below shows a sample task pane embedded into all available Excel docks.
In Add-in Express terms, an advanced Outlook region is a subpane, or a dock, of Outlook windows that may host native .NET forms. There are two types of the advanced regions - Outlook view regions (subpanes on the Outlook Explorer window) and Outlook form regions (subpanes of the Outlook Inspector window).
Outlook view regions are specified in the ExplorerLayout property of the item (= ADXOlFormsCollectionItem). Outlook form regions are specified in the InspectorLayout property of the item. That is, one ADXOlFormsCollectionItem may show your form in a view and form region. Note that you must also specify the item's ExplorerItemTypes and/or InspectorItemTypes properties; otherwise, the form (an instance of ADXOlForm) will never be shown.
Outlook view regions: