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I have a desktop application that was originally compiled in C#. Its only task that now needs attention is the SMS routine. At the moment the program calls a small, home-grown web service; I can share full documentation for that existing endpoint so you will immediately see the parameters and payload it expects. Here is the new goal: whenever the application sends a message it must instead post to Africastalking’s bulk messaging REST endpoint ( [login to view URL] ). All other behaviour in the app should remain untouched. Therefore, you will focus purely on refactoring the SendSms() logic, wiring in the required headers, URL parameters, JSON body and authentication for Africastalking. Deliverables • Updated source files (or a self-contained class / DLL) that replace the current SMS method • A rebuilt executable demonstrating successful delivery through the Africastalking sandbox, with the request/response captured for verification • Brief notes on the code changes so I can maintain the project in future Acceptance criteria The rebuilt app must compile without warnings in Visual Studio, send messages that appear in my Africastalking dashboard, and display any API error returned by Africastalking exactly once to the user. If you have recent experience integrating Africastalking or similar REST gateways in C#, this will be a quick, focused task. Feel free to suggest the cleanest way to structure the new call—HttpClient, RestSharp, or another lightweight approach—as long as it keeps external dependencies to a minimum.
Project ID: 40376216
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140 freelancers are bidding on average $134 USD for this job

Hello! I'm ready and confident with my expertise for this project. I understand that you want to refactor the existing C# desktop application by replacing the current SMS routine with Africa's Talking's bulk messaging REST API, while keeping all other application functionality unchanged. The goal is to implement a clean and reliable integration handling headers, authentication, request/response flow, and error handling so messages are successfully sent via Africastalking and properly reflected in your dashboard. Drop me a message; I'm available and ready to discuss more about your project. Regards, Jasmin
$140 USD in 7 days
9.5
9.5

Hello I have over 15 years of experience with C# and .NET Also, I have extensive experience with HttpClient, RestSharp I have got you need to change SendSms() logic There are few questions about your project: Is there available documentation about Africastalking? Thanks.
$49.50 USD in 2 days
8.6
8.6

Making changes to already written applications is my core expertise being an expert in c# i can do it quickly and make sure your application calls the new end point and compiles properly and sms is sent without an issue
$100 USD in 2 days
8.6
8.6

⭐⭐⭐⭐⭐ Update SMS Logic in Your C# Application for Africa's Talking API ❇️ Hi My Friend, I hope you're doing well. I've reviewed your project requirements and see you're looking for an expert to update the SMS routine in your C# application. Look no further; Zohaib is here to help you! My team has successfully completed 50+ similar projects for C# applications. I will refactor the SendSms() logic, ensuring it integrates smoothly with Africa's Talking API, while keeping the rest of your app unchanged. ➡️ Why Me? I can easily update your SMS functionality as I have 5 years of experience in C# development, specializing in API integrations, debugging, and application optimization. My expertise includes working with RESTful services, JSON handling, and ensuring smooth communication between systems. I also have a strong grip on tools like Visual Studio and decompilation methods, ensuring a seamless transition for your project. ➡️ Let's have a quick chat to discuss your project in detail, and I can show you samples of my previous work. Looking forward to connecting with you! ➡️ Skills & Experience: ✅ C# Development ✅ API Integration ✅ RESTful Services ✅ JSON Handling ✅ Application Debugging ✅ Visual Studio ✅ Decompilation Tools ✅ Code Refactoring ✅ Error Handling ✅ Version Control ✅ Software Optimization ✅ System Communication Waiting for your response! Best Regards, Zohaib
$150 USD in 2 days
7.9
7.9

I understand you need to switch the SMS routine in your C# desktop application to Africastalking's bulk messaging REST endpoint. I will refactor the SendSms() logic, integrate the required headers, URL parameters, JSON body, and authentication for Africastalking. I will provide updated source files, a rebuilt executable for testing, and brief notes on the code changes. My experience in integrating similar REST gateways in C# ensures a quick and efficient task completion. Let's discuss further to ensure the project meets your expectations. Please go through my profile its 15 years old see the work I did over the years. No Win No Fee means that your satisfaction is my utmost priority. Lets discuss the job details. Moreover, I am willing to start the job and perform tasks without even being hired; it is just to show my commitment to this project. Looking forward to hear from you.
$123 USD in 6 days
7.5
7.5

As a seasoned professional at Logic Powered Solutions specializing in .NET and C# programming, your project to integrate Africastalking's bulk messaging REST endpoint is right up my alley. I've successfully completed similar tasks in the past for notable clients, where I not only met but exceeded their expectations. My thorough understanding and practical experience with API integrations will enable me to seamlessly refactor your SendSms() logic, incorporating the necessary headers, URL parameters, JSON body, and authentication for Africastalking. Not only will I provide you with updated source files or a self-contained class/DLL that replaces the current SMS method, but I will also deliver a rebuilt executable that demonstrates successful delivery through the Africastalking sandbox, complete with comprehensive request/response capture for verification purposes. Moreover, I understand that knowledge transfer is crucial, so I will provide you with succinct notes on all code changes made so that you can easily maintain the project in the future. One of my core values is quality before quantity, and this aligns perfectly with your goal of keeping external dependencies minimal for cleaner code structuring. Therefore, whether we choose to employ HttpClient, RestSharp, or any other lightweight approach we deem fit during our collaboration – I guarantee success.
$140 USD in 7 days
7.8
7.8

Hello!===>>I can quickly refactor your existing SendSms() logic to integrate with Africastalking’s bulk messaging API using a clean, lightweight approach (preferably HttpClient for minimal dependencies). I’ll handle headers, authentication, payload formatting, and ensure proper error handling so API responses are surfaced clearly in the app. You’ll receive updated source/DLL, a working build with verified sandbox delivery, and concise documentation of the changes for future maintenance
$300 USD in 5 days
7.5
7.5

I can help you seamlessly replace your existing SMS routine with integration to the Africa's Talking Bulk Messaging REST API—while keeping the rest of your desktop application completely unchanged. You currently have a C# desktop application that: * Uses a custom web service for sending SMS * Needs to be updated to use Africa’s Talking bulk SMS endpoint * Should retain all existing application behavior except the SendSms() logic The task is focused, well-defined, and aligns perfectly with my experience in .NET API integrations and refactoring legacy code. I’ll encapsulate everything cleanly so the new SMS logic is modular, maintainable, and easy to extend.
$180 USD in 2 days
7.3
7.3

Hi there, I’ve read your project and I’m confident I can refactor your C# SMS routine to route messages through Africastalking’s Bulk Messaging API without touching the rest of the application. I have extensive experience building reliable REST integrations in .NET, including secure header management, JSON payloads, and robust error handling. I’ll focus on replacing SendSms() with a clean Africastalking client that uses HttpClient for a lightweight, dependency-free approach, while ensuring the sandbox flow mirrors your current behavior so you can verifyDelivery in your dashboard. What you’ll get: - A self-contained class/DLL and updated source files that switch the SMS path to Africastalking, with proper authentication headers and JSON body structure as per the sandbox docs. - A rebuilt executable demonstrating the integration with request/response captures for verification. - Brief notes detailing the exact changes and future maintenance steps so you can extend or adjust the integration later. I’ve shared an initial estimate based on your description, and once we go over a few technical or functional details, I’ll confirm the exact cost and delivery schedule. What is your preferred approach for capturing and logging the exact HTTP request/response payloads in the sandbox environment, and do you require any specific formatting or redaction for sensitive data? I’ll propose a clean structure (HttpClient-based) with minimal external dependencies, clear separation of concerns
$75 USD in 3 days
7.0
7.0

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
$145 USD in 3 days
7.2
7.2

✅Hi, Client. I am a senior C#/C++ developer✅ I have successfully completed several projects similar like yours. I am interested in your project. I would like to work for you in the long term. Please send a message to discuss this project. I look forward to hearing from you. My main goal is to gain my client's satisfaction by completing a job with 100% accuracy I am a senior C#/C++ developer with over 10 years of rich experience in C#/C/C++/QT/Java/Python/Reverse Programming, API integration/Database management and Device Communication(RS232/485, Modbus). So, I can complete it within your timeline. Best regards! From Hien ...
$250 USD in 2 days
5.9
5.9

As an experienced and versatile Fullstack Developer with a specific expertise in C#, I am confident that I can seamlessly switch your desktop application's SMS routine to Africastalking. With over 6 years in the software development industry, I have gained ample experience working with diverse systems, including REST gateways like Africastalking. Your requirement for minimal external dependencies is a great fit with my skill set; I'm well-versed in developing robust desktop applications with C#, closely managing dependencies throughout the project lifecycle. Not only can I successfully refactor your current SMS method, but also provide a clean and efficient solution using lightweight approaches like HttpClient, RestSharp or any other of your choice. My ability to adapt my knowledge base and skills to your specific project is what sets me apart. Beyond delivering the desired services, I focus on empowering my clients to maintain their projects confidently. Rest assured, not only will you receive updated source files or a self-contained class/DLL replacing your current SMS method, but you'll also get clear notes detailing all code changes. With my support, your rebuilt app will compile without warnings, correctly display API errors and send messages just as expected. Let's get this done!
$60 USD in 2 days
5.6
5.6

With over a decade of experience in programming languages such as C#, C++, Java and more, your project aligns perfectly with my skill set. Though I possess a wealth of knowledge in trading algorithms and have primarily worked on MT4/MT5 projects, I am confident my versatility will enable me to successfully integrate Africastalking on your desktop application. My engineering background is an added advantage as it brings a meticulous approach to problem-solving. Given your pre-existing documentation and commercial decompilation tools, I'll be able to quickly understand the existing SMS routine and refactor it to accommodate Africastalking with minimal impact on other functionalities. Understanding that your ultimate goal is to have the rebuilt application working smoothly without external dependencies, I'll lean towards a lightweight approach like HttpClient or RestSharp based on my past experience. In addition to providing cleanable, maintainable, documented source files (or class/DLL), I'm committed to delivering a rebuilt executable that not only compiles without warnings but also ensures messages sent through Africastalking are accurately displayed on the dashboard while handling any API errors effectively for user visibility.
$50 USD in 1 day
5.9
5.9

At Toriqul Global Solutions, we transform ideas into high-performing digital products. We are a professional web development agency led by Engineer Md. Toriqul Islam brings over a decade of expertise in designing and developing websites, applications, and custom digital solutions. What We Deliver: ✔ Stunning modern websites ✔ Powerful custom web applications ✔ Mobile apps for Android & iOS ✔ E-commerce platforms ✔ Business automation systems ✔ SEO-friendly and fast-loading websites Our Tech Stack: React, Node.js, Laravel, PHP, WordPress, Python, .NET, MySQL, MongoDB, React Native, Bootstrap, JavaScript, and more. Why Clients Trust Us: • Business-focused solutions • Clean UI/UX design • Secure & scalable systems • Reliable deadlines • Transparent communication • Excellent after-sales support We don’t just build websites, we build results. Let’s create something amazing together. Best Regards, Toriqul Global Solutions
$80 USD in 4 days
5.9
5.9

Hello, I am senior .NET developer. I have expert knowledge and experience with C# and exe de compiling and add new stuffs and recompile. Please contact me via chat and share more info for me Thank You
$250 USD in 7 days
5.5
5.5

Hello, I’m a Senior Software Engineer with extensive experience in Python automation and web scraping & C# WindowFormApp and WFP. I’ve carefully reviewed your requirements and I can deliver a reliable, production-ready solution — not a quick workaround. ✅ Clean and maintainable code ✅ Clear communication ✅ On-time delivery I’d be happy to discuss your project details and propose the best technical approach. Best regards, Samir
$50 USD in 1 day
5.6
5.6

Hi, ***** .Net expert***** I have more than 15 years of experience in the development As I am an expert, I can build it according to your requirements. Because I have a lot of experience in these fields, I can build your project as soon as possible. I offer excellent software quality work and provide the best support for your project. If you give me this job, I will do my best to finish your job by your timeline. If you want to see my past works, I can show you my past works right now. Ready to discuss this with you about the task now. Thank you for the reading.
$100 USD in 7 days
5.9
5.9

Hello, I have recent experience in integrating Africastalking gateway in C#. I see that you want your application to post to Africastalking's bulk messaging REST endpoint whenever it will send a message. Please message me to discuss the requirements in more detail. I am looking forward to working with you, Fahad.
$100 USD in 2 days
5.5
5.5

Hello, I’ve read your goal to switch the desktop C# SMS path from your home-grown service to Africastalking bulk messaging. I can refactor the SendSms logic into a clean, minimal-rest call using HttpClient with proper headers, URI params, JSON body, and sandbox authentication, while leaving the rest of the app untouched. I’ll leverage the supplied decompiled skeleton to wire in the Africastalking endpoint and ensure the request/response are captured for verification, with error messages surfaced to the user exactly once. Previously I’ve integrated REST gateways in C# for messaging workflows and can deliver a compact, testable class or DLL that you can drop in and rebuild the executable with. I’ll provide concise notes on what changed and why, so future maintenance is straightforward. Next steps would be to confirm your preferred approach (HttpClient vs RestSharp) and any naming conventions for the refactor. I can deliver a working prototype within a few days after you share the skeleton. Best regards, Billy Bryan
$250 USD in 2 days
5.1
5.1

Hello I can refactor your C# SMS routine to integrate directly with Africa's Talking bulk messaging API while keeping the rest of your application unchanged. I will replace the current SendSms() logic using a clean HttpClient-based implementation with proper headers, authentication, and JSON payload. The integration will match the required endpoint structure and ensure reliable delivery via the sandbox. I will handle response parsing and ensure any API error is displayed exactly once to the user. You will receive updated source code or a self-contained class/DLL for easy integration. I will also provide a rebuilt executable demonstrating successful message delivery with request/response logs. Code will compile cleanly in Microsoft Visual Studio with no warnings. Brief documentation will be included for future maintenance. Ready to review your existing endpoint and start immediately.
$160 USD in 7 days
5.1
5.1

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