This class does not resemble a class in the host application's object model. VSTO Add-in projects provide a generated class called ThisAddIn. For more information about the generated classes in document-level projects, see Program document-level customizations. For example, the generated ThisDocument class in a Word document project provides the same members as the Document class in the Word object model. In document-level projects for Excel and Word, the generated class resembles a top-level object in the application's object model. These classes also provide access to the object model of the host application and access to features like actions panes and custom task panes. For more information, see the following topics:Īll Office projects include one or more generated classes that provide the entry point for your code. For example, the way you call methods that have optional parameters in an Office primary interop assembly depends on the programming language you are using in your project. For an overview of the types in the Office PIAs, see Overview of classes and interfaces in the Office primary interop assemblies.īecause the types in the Office PIAs correspond to types in the COM-based object models, the way you use these types is often different from other managed types. The Office PIAs contain a combination of types that expose the object model of the Office applications and additional infrastructure types that are not intended to be used directly in your code. For more information, see Design and create Office solutions. The Office PIAs are not required on end-user computers to run Office solutions that target the. For more information, see Configure a computer to develop Office solutions. You must have the Office PIAs installed and registered in the global assembly cache on your development computer to perform most development tasks. Use primary interop assemblies at design time and runtime For more information, see How to: Target Office applications through primary interop assemblies. To automate the features of other Office applications from the project, you must add a reference to the appropriate PIA manually. When you create an Office project in Visual Studio, a reference to the appropriate PIA is automatically added to the project. The primary interop assemblies enable managed code to interact with the COM-based object model of the Office applications.Įvery Microsoft Office application has a PIA. To automate Office applications by using managed code, you must use the Office primary interop assemblies (PIAs). However, you cannot use managed code (such as Visual Basic or C#) directly to automate Office applications. Microsoft Office applications expose much of their functionality to Automation. Automation enables you to use code to create and control software objects exposed by any application, DLL, or ActiveX control that supports the appropriate programmatic interfaces. The key technology that makes creating an integrated Microsoft Office solution possible is Automation, which is part of the Component Object Model (COM) technology. See Features available by Office application and project type. Other differences are related to the design of Office projects.Īpplies to: The information in this topic applies to document-level projects and VSTO Add-in projects. Many of these differences are related to the way the Office object models are exposed to managed code. Looking in the RoleTailored Client folder I see the interop files, but they are identical to the ones found in the GAC_MSIL folder (version 15).There are some aspects of writing code in Office projects that are different from other types of projects in Visual Studio. Looking at the GAC_MSIL folder I see the version 14 files are missig and only the version 15 files are presentĬ:\Windows\assembly\GAC_MSIL\\15.0.0.0_71e9bce111e9429c I've tried installing the "Microsoft Office 2010: Primary Interop Assemblies Redistributable" ( ), but the error is still present. The Interop version 14 should be the Office 2010 version, and it is not present on the computer. "Could not load type ‚.ApplicationClass.’, Version=14.0.0.0,Culture=Neutral,PublicKeyToken=71e9bce111e9429c‘." When trying to send the invoices the following error appears (translated from Danish, so it may not be 100% correct) They are using NAV2017 and Office 365 ProPlus on a windows 10 platform, and all is hosted in-house. Their regular NAV consultant have drawn a blank. Bear with me - I'm not a NAV consultant, but have been called upon to troubleshoot why a client is unable to send invoices using Outlook.
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