
Fechado
Publicado
Pago na entrega
I’m still running an old Excel-based calculation and booking program that only behaves properly on Windows XP. Its many macros and hidden tables act like a miniature database, but maintaining it is now impossible and it refuses to run on my Windows 11 machines. I need the whole solution rebuilt as a clean standalone Windows 11 application while preserving three core pillars that make the file valuable to us today: all calculation logic, the booking workflow, and the underlying database management that ties client, price and schedule data together. The interface can evolve—slicker, more intuitive screens would be welcome—but the numbers must match the results produced by the legacy file. Key deliverables • Executable Windows 11 program that fully replicates existing calculations, booking process and data storage • One-click import of our current workbook so historic records carry over intact • Basic user guide outlining day-to-day use and any admin tasks (backup, adding new price tables, etc.) I can supply the original workbook, screenshots of its forms, plus a short video walkthrough so you can trace every step. I will test the finished build by running identical scenarios in both systems; outputs must be identical to sign off. If you’ve modernised legacy Excel/VBA tools before—especially by porting logic into C#, .NET, Python or similar—I’d love to see examples. Let’s bring this vital tool into the present.
ID do Projeto: 40014340
116 propostas
Projeto remoto
Ativo há 1 mês
Defina seu orçamento e seu prazo
Seja pago pelo seu trabalho
Descreva sua proposta
É grátis para se inscrever e fazer ofertas em trabalhos
116 freelancers estão ofertando em média $517 USD for esse trabalho

Hello, I understand that you need to completely rebuild your old Excel-based booking program into a standalone Windows 11 application while keeping its key features: the calculation logic, booking workflow, and the database management that ties everything together. My approach will involve creating a user-friendly interface that enhances usability while ensuring the calculations remain accurate and match your legacy system. I’ll ensure a smooth data transition with a one-click import feature for historical records. Additionally, I’ll provide a user guide to assist in daily operations and administrative tasks. Rest assured that I will closely follow your original workbook and video to ensure everything aligns perfectly with your expectations. What specific features of the current system are you hoping to improve or keep unchanged? Best regards,
$750 USD em 10 dias
9,3
9,3

⭐⭐⭐⭐⭐ Thank you for outlining your legacy-system needs so clearly. CnELIndia, led by Raman Ladhani, can rebuild your Excel/VBA tool into a robust Windows 11 application while preserving every bit of your calculation logic, booking workflow, and data-linking rules. Our approach would be: Reverse-engineering your workbook: We extract all macros, hidden tables and formulas, map dependencies, and document current workflows to ensure 100% logic parity. Technology migration: Rebuild the system using a stable .NET/C# architecture with a structured database layer to securely handle clients, prices and schedules. UI modernisation: Create intuitive Windows forms that streamline booking tasks while maintaining familiar flow. Data import: Build a one-click importer that transfers all historic records from your existing workbook. Validation: Run side-by-side scenario testing to guarantee identical outputs. Documentation & support: Provide a clear user guide plus post-delivery assistance. We have extensive experience modernising complex Excel/VBA systems and can deliver a clean, maintainable, future-proof solution.
$500 USD em 7 dias
9,0
9,0

Hello, As a team at Live Experts, we have all the necessary skills and extensive experience to undertake your project. Our proficiency in .NET development, C# programming and Software Architecture makes us uniquely suited to address the specific requirements of your project. We understand how crucial it is for the new software to replicate your current calculations, booking process and data storage and we are more than capable of making this happen. We have a successful track record transmuting many similar programs into modern yet familiar systems. The preservation of the calculation logic, booking workflow and database management are the ongoing backbone of your business and we truly value their significance. Our ability to think both pragmatically as developers and strategically from a big-picture perspective allows us to find solutions that marry functionality with user-friendliness. Moreover, our extensive knowledge in various fields such as Statistics, Data Analysis, Machine Learning and Game Development will be an added advantage in delivering the best possible solution for your business. We're ready to start working on this exciting project, leveraging the power of C#, .NET or Python (whatever language you choose) to create that clean standalone Windows 11 application you desire while ensuring complete data compatibility with your existing workbook. Let's bring your vital tool into the present together! Thanks!
$750 USD em 1 dia
8,4
8,4

Hello I am Windows Desktop application developer with 25 years of experience with programming and scripting including working with Excel worksheets. About your project - I offer to transfer Excel VBA logic to C#/.NET - and moreover I have completed a lot of similar projects already! I have virtual machine with Windows XP to test how it works there and I am able to reproduce same behavior with Windows 11
$285 USD em 2 dias
8,4
8,4

Hello, I will modernize your Excel based booking software by redesigning the sheets, cleaning the formulas, and creating a simple flow that is easy for your team to use. I will organize the data structure, automate repeating tasks, and fix any errors in the current workbook. I will also add clear input fields, dropdowns, validations, and clean dashboards so bookings, customer data, and availability stay accurate. If needed, I can also connect macros or light VBA to reduce manual steps and keep the process stable. The final file will be fast, organized, and easy for anyone on your team to manage. Looking forward to discussing further. Regards, Kamran.
$250 USD em 7 dias
8,3
8,3

My dear prospective client, Let's come to on a same page and start asap As an experienced Full Stack Developer with a particular forte for .NET and Excel, I'm more than prepared to tackle the challenge of modernizing your dated software. I've been perfecting my craft for over 14 years, honing in on transforming legacy Excel/VBA tools into robust, user-friendly applications that align with the modern technology landscape. Having previously migrated logic into languages such as C#, .NET, and Python, I am well-versed in creating effective interfaces while preserving core functionalities. In addition to my technical proficiency, my dedication to quality assurance blended with my availability across various time zones ensure that your project will be delivered with precision within your timeline and budget. My mission as a developer is not only to meet expectations but to exceed them -- a goal achieved by careful attention to detail and consistent communication throughout the development process. Conclusively, choosing me for this project guarantees a smooth transition from your current Windows XP-based Excel program to a sleek, standalone Windows 11 application. With my deep understanding of maintaining databases tied to client data, pricing, and schedules, you'll receive an upgraded solution that replicates existing calculations while incorporating a more intuitive interface. I look forward to bringing this vital tool into the present! Best regards
$250 USD em 7 dias
8,3
8,3

Having successfully undertook projects similar to yours with excellent results, I and my team at Einnovention are the perfect fit to modernize your Excel booking software. Our thorough understanding of both legacy Excel/VBA tools and modern programming languages like C#, .NET, Python, enables us to deliver efficient solutions tailored to our clients' needs. My 248 successfully completed projects and 4.9/5 rating on Freelancer demonstrate our ability to consistently provide high-quality, scalable, and innovative solutions, which you need for this project. What sets us apart from the competition is our focus on long-term partnerships rather than just one-off projects; we aim not only achieve a satisfactory end but also aim for an enhanced post-completion relationship. Our willingness to provide unlimited revisions until full satisfaction and free support for over 2 weeks after delivery validates this commitment. Finally, our proficiency extends beyond coding; we also have valuable experience in data migration, which means we can ensure a seamless import of your current workbook into the new system without loss or damage to any historic records. Our proposal doesn't just involve executing your vision but elevating it - by assuring that not only will the results produced by the core features of your current file remain intact but also the interface will be more intuitive and sleek. Let's take this vital tool into the present together.
$500 USD em 7 dias
7,8
7,8

Hi there, i am intrested in your project. i can build the application in c# and mssql. Is it possible to share excel sheet and other details? thank you and looking foward to hear from you.
$750 USD em 7 dias
7,7
7,7

Hi, I am more than expert in developing desktop applications in C# that runs on Windows10/11 and older too. If you want only for Windows then C# is the best.....otherwise if you want cross platform then we can use Java. [[Executable Windows 11 program that fully replicates existing calculations, booking process and data storage]] Do you have the details of the calculations ? thanks
$600 USD em 15 dias
7,5
7,5

Hi I will develop a robust , fast windows C# app exactly like your excel application with windows 11 compatiblity as per yr reqiurement . I have accomplished similar task before. I am available to discuss now Regards
$500 USD em 7 dias
7,4
7,4

Hello, I'm Abu Gosia I'm interested in your project very well. I'm good in C#, .Net Core, MVC, ASP.NET, Angular.js, Yii2, PHP, Laravel, Codeigneter, Wordpress, Prestashop, Open Cart. I m quite well experienced in these jobs. Let's go ahead with me. Thanks
$555 USD em 15 dias
7,4
7,4

Hello Magnus J., We would like to grab this opportunity and will work till you get 100% satisfied with our work. We are an expert team which have many years of experience on PHP, Visual Basic, .NET, Excel, C# Programming, Software Architecture, Software Development, Database Management Please come over chat and discuss your requirement in a detailed way. Thank You
$500 USD em 7 dias
7,0
7,0

Hi, there I can rebuild your legacy Excel-based tool as a clean, standalone Windows 11 application while preserving all calculation logic, booking workflow, and database management. I have 5+ years of experience in PHP and backend development, and I’m comfortable translating complex Excel/VBA logic into modern applications (C#/.NET or Python). I’ll implement one-click import for historic records, maintain calculation accuracy, and provide an intuitive interface with a simple user guide. I can also ensure thorough testing so results match the legacy system exactly. Happy to start once you share the workbook and walkthrough. Best regards, Bhargav PHP Developer
$500 USD em 7 dias
6,8
6,8

Hello Sir/MAM I am a skilled full stack developer. Having rich experience in Java , C++ , C , C# , Python , Eclipse , Sql , Mysql , .Net ,Oracle , Object Oriented Programming , Data Structure , Algorithms . I have a perfect grip on “Artificial Intelligence” “Automation” , and work in “Machine Learning” Deep Learning ”. My track record as demonstrated in my 100% job completion and 5-star review rating showcases My ability to deliver exceptional results on time and with utmost quality I believe that my skill set makes me the ideal candidate for this project Please come on chat we will discuss more about this I will be waiting for your reply . Thanks and Best Regards
$251 USD em 2 dias
6,4
6,4

Hi, As a seasoned full-stack developer with over 7 years of experience transforming legacy tools into modern and functional applications, I believe I would be the best fit for your project. Your project to modernize your Excel booking software resonates deeply with my expertise, showcasing my skills in C#, .NET, Python and other similar languages, programming tools that I've adeptly used to enhance outdated software in the past. Further, my proficiency with MEAN/MERN stack(Node.JS, MongoDB) which align closely with your desired technology stack will be an asset in rebuilding a Windows 11 application that tightly replicates your existing workflow while preserving the calculated logic. I fully understand the importance of maintaining data integrity during a transition like this and I assure you, complete fidelity of your historic records after converting your current workbook is my top priority. Besides delivering an accurate executable version of your current process, I'll provide a user-friendly guide that will empower you to manage routine admin tasks yourself. Moreover, as part of my quality assurance process, I'll meticulously verify the outputs of both legacy and new systems under identical scenarios until you are confident in its performance Thanks....
$750 USD em 7 dias
6,5
6,5

Having over a decade of experience and a team of proficient developers and designers, my company Prajapati Technologies can efficiently convert your existing legacy Excel booking program into a clean, standalone Windows 11 application. Our diverse skill set includes expertise in .NET, C# programming, and Excel, to name a few; that proves relevant to the demands of your project. We still value the inherent logic, workflow, and database management that define your file, ensuring seamless continuity and data integrity. This is because we understand the significance of numbers matching results produced by a legacy file for you. Not just an executable program replicating existing functionalities seamlessly on Windows 11, but we also commit to making importing your current workbook effortless without compromising any historical records. My commitment to client satisfaction is unwavering and absolute. I assure you your revised software will be thoroughly tested ensuring identical outputs signed by you. Our dedication is complemented with our availability 7 days a week for any reiterations or enhancements beyond job completion. Let's jointly bring this vital tool into the present to make your workflow smoother while retaining its essence!
$650 USD em 25 dias
6,2
6,2

Hi, I hope you're doing well. I understand you're looking for Modernize Excel Booking Software I am the ideal candidate for your project. I have read the provided job description and I understand what you are looking for. I have over 10+ years of experience PHP, Visual Basic, .NET, Excel, C# Programming, Software Architecture, Software Development, Database Management .Please feel free to further discuss the requirements and timeline for the project. I'd be happy to assist you. I am ready to start right now. ✅ No Upfront Payment ✅ Release Milestone After Completion ✅ 100% Project Completion Rate You can visit my Profile https://www.freelancer.com/u/HiraMahmood4072 Thank you
$275 USD em 2 dias
6,2
6,2

Hi Magnus, I’m excited about the opportunity to modernize your Excel Booking Software. I have extensive experience in migrating legacy systems, particularly with transitioning Excel-based applications to clean, standalone solutions in C# and .NET environments. I understand the importance of preserving your calculation logic, booking workflow, and database management while ensuring the outputs remain consistent with your current system. My approach will include developing a robust Windows 11 program that retains all existing functionalities, facilitates one-click data migration, and features an intuitive user interface. I will also provide a user guide for day-to-day operations. With my proficiency in database management and software architecture, we’ll ensure a seamless transition. I can start immediately once you award the project. Let’s connect and discuss how we can enhance your application, ensuring all functionalities align perfectly with your legacy tool.
$555 USD em 26 dias
7,1
7,1

Hello There!!! ⚜⭐⭐⭐⭐⚜(( Modern Windows 11 app that fully mirrors your legacy Excel logic ))⚜⭐⭐⭐⭐⚜ What stood out is how critical your XP based workbook has become and how precise the calculations must remain while moving to a stable Windows 11 application. You need a rebuild that respects every formula, workflow and data link instead of a loose reinterpretation. I have worked on modernizing legacy Excel and VBA tools by translating embedded logic into structured .NET or Python based applications where the interface improves but the outputs remain identical. My approach would start by mapping all macro paths, hidden tables and booking flows, then replicating them with a clean architecture and a smooth desktop UI. Key focus points for your project: • Exact replication of calculations, bookings and data relationships • Seamless one click import of your historic workbook • Clear user guide for daily operations and admin tasks If this matches your expectations, I would be glad to review the workbook and discuss the best rebuild path. Warm Regards, Farhin B.
$256 USD em 15 dias
6,4
6,4

My dear prospective client, Let's come to on a same page and start asap I WILL DO IT I am confident that I can deliver exactly what you need for your project. My expertise in .NET, C# programming, PHP, and Software development aligns perfectly with the task at hand - modernizing your Excel booking software into a standalone Windows 11 application that replicates its existing functionalities while providing an enhanced user experience. One of my fortes includes porting logic from legacy systems into newer platforms hence making them more efficient, maintainable, and user-friendly. I can assure you a seamless, one-click import of your existing workbook ensuring all your historic records remain intact. With my extensive background in the technical field and 15+ years of experience Furthermore, my commitment to continued support even after delivering the final product ensures that any troubleshooting or future modifications that may arise are handled promptly and efficiently. So, let's embark on this journey together and bring your vital tool into the present in a way that doesn't just meet but exceeds your expectations! Best regards
$250 USD em 7 dias
6,0
6,0

Kristianstad, Sweden
Membro desde jan. 4, 2025
€8-30 EUR
$30-250 USD
€30-250 EUR
$30-250 USD
$1500-3000 AUD
₹750-1250 INR / hora
$250-750 USD
₹1250-2500 INR / hora
€12-18 EUR / hora
₹5000-5001 INR
₹12500-37500 INR
$10-30 USD
₹12500-37500 INR
₹1250-2500 INR / hora
₹1500-1501 INR
$30-250 USD
$15-25 USD / hora
$30-250 NZD
₹12500-37500 INR
€30-250 EUR
$30-250 CAD
$25-50 USD / hora
$30-250 USD