What’s New in ASP.NET Core 10 – Key Features & Expert Insights
We tracked the evolution of .NET 9 on Reddit, and watched the heated debates on .NET 6 vs .NET 8. And just when we thought that things had finally settled, Microsoft drops another...
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Microsoft Office is a versatile platform in the world of technologies. Not only is it feature-rich, but it is also an expandable platform that caters to a variety of business needs. To power up business operations and efficiency, developers try to extend the functionalities of Microsoft Office for a rich user experience.
Office add-ins are used for extension of functions and alteration of office clients, for example, Microsoft Word, Microsoft Outlook, Microsoft Excel, Microsoft PowerPoint, and Office 365. Microsoft supports the modification of existing features and the creation of new features by using available tools and APIs.
There are different types of Office add-ins - to name a few - functionality extension in PowerPoint, Excel, and Word, creation of new objects in PowerPoint and Excel, extension of functions in Outlook add-ins, etc.
In general, there are two main technologies used for developing Office add-ins:
Develop add-in using Office JavaScript API
Develop add-in using Visual Studio Tools for Office (VSTO)
iFour Technolab, as a leading IT consuting company,employs the latest technologies to build superior systems for clients. Our professional team is experienced at using the latest tools for providing best solutions in the market. We use VSTO Add-ins for developing the best software for our clients.
Visual Studio has gained huge importance in the sphere of .NET development. It offers great feature support that helps while creating document-level projects such as Windows Forms controls, document-designing, and data-binding by drag and drop facility, debugger, etc. With our years of experience, we have delivered effective solutions to a broad range of clients and fuelled many start-ups with our VSTO Add-in development services.
VSTO (Visual Studio Tools for Office) is a collection of development tools available as Visual Studio plug-ins and a runtime that enables Microsoft Office 2003 and subsequent versions of Office sources to host the .NET CLR (Common Language Runtime) and explore their capabilities via .NET.
iFour Technolab is a versatile VSTO Add-in development company in USA with vast experience in developing a broad range of solutions. For VSTO-based Office development, iFour uses the following templates
VSTO Add-ins and
Document-level customizations
Whatever features we create in VSTO Add-ins, are made available to the application itself, irrespective of the documents that are open. Our company builds solutions in such a way that the VSTO Add-ins run at a time when the associated application is started. We even assist you with API integration services for further enhancement
Document-level customizations have an assembly which is associated with a single workbook, template or document in Microsoft Office Excel or Microsoft Office Word. Whenever we open the associated document, the assembly and customized features gets loaded.
Using various tools available in Visual Studio, our team can help you with document-level customizations and simplify your business concerns. The document which is customized is hosted as a design surface in Visual Studio. This makes it possible to design the document just by dragging and dropping controls onto it. iFour Technolab uses numerous features available in Visual Studio such as data binding, debugger and Windows Forms controls which result in robust and sustainable solutions for the client.
iFour is a leading VSTO development company in the USA, helping clients all over the world by delivering excellent VSTO services to gain superior business results. We also provide document-level customization services required for specific documents in business projects.
Our dedicated team puts in a lot of effort to help you meet your target goals at a rapid pace. Keeping an eye on the cutthroat competition in the market, our team of VSTO developers always prefers the latest version of VSTO, i.e., Office tools for Visual Studio, which is integrated with all versions of Microsoft Visual Studio 2017 for project development.
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Project Sign-off
iFour Technolab has been a reliable custom Addin development company with over ten years of market presence and incredible track record. Take a look at some of our work.
Our experienced Microsoft professionals have assisted clients of various domain verticals and helped them with Bespoke Addin development solutions tailored to suit their business requirements.
Connect with us now to hire Angular developers, Java developers and other diligent professionals and accomplish your business objectives.















iFour Technolab is a Microsoft Certified Solutions Partner having experienced, vetted, and certified professionals. We have served over 15 industries with VSTO Add-in development services and assisted more than 50 startups. We believe in offering high-quality services on time adhering to strict privacy.
iFour Technolab works with goal-oriented perception and aims to deliver satisfying services to its clients. We have dexterous experts at all levels and departments. When the project development begins, it undertakes various departments to include in SDLC to assure project standard and perfection.
We provide you with a flexible pricing model to hire VSTO developers according to your needs. We generally have three pricing models i.e., dedicated team model, fixed-price model, hourly-based model. The pricing of each model depends on the developer’s skill-set requirement, experience level, and technology.
Our experts use VSTO, WPF, and JavaScript API to implement Office Addin solutions. In addition, we also keep focus on latest technologies to build superior systems.
Either Project manager, business analyst, or development team would be in direct communication with you depending on the development approach and processes you are comfortable with.
iFour Technolab is an inclusive hub for skilled developers proficient in different technology spheres such as .NET, Blockchain, Node.js, React, Angular, and other e-commerce platforms. Our experts can help you with custom software services using various technologies and fulfill your business needs.
Our VSTO experts examine and analyze your business requirements. We offer you the final budget and time estimation for your project development. A complete project implementation plan is shared with you during the first week of the project’s start.
We ensure your project idea remains secret with us. We make our VSTO professionals sign NDA to accomplish project security.
Our experts can help you with custom plugin development services for various platforms such as Microsoft Word, MS Outlook, Microsoft Excel, MS PowerPoint, and Office 365.
Our experts use Agile methodologies (SCRUM) while software project development.
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