Thank you!
We will contact you shortly.
Delphi to C# Migration
Escape Delphi Lock-In and Risks with a Manageable C# Modernization
Delphi systems rarely fail due to bugs, but because of business logic locked inside UI events, binaries, and undocumented flows.
Corsac can convert Delphi to C# architectures, preserving proven logic while eliminating platform risk, vendor dependency, and stalled releases. We modernize with parallel delivery, full control, traceability, and stability.
Certifications and regulations we’re compliant with
Timing Matters
Top Reasons to Convert Delphi Applications to C#
■Every Windows update or hardware refresh disrupts your Delphi apps
■Your key engineers face burnout from constant fixing of Delphi issues
■Desktop-first Delphi architectures restrict APIs, cloud, integrations, and AI adoption
■GDPR, HIPAA, SOC2, or ISO compliance suffers from poor encryption, logging, and audit patterns
■Tech debt and operational overhead drain resources intended for growth
Migration Success Stories: Real Results from Converting Delphi to C#
Our modernization experience spans over 18 years in 7+ industries, including GIS, Construction, Healthcare, and more. We convert Delphi to C#, delivering controlled modernization of desktop-heavy, UI-bound legacy systems into maintainable .NET architectures.
From Business Perspective
● Reduce operational risk stemming from OS changes, tooling limits, and vendor lock-in● Restore smooth release cycles by eliminating the fear of upgrades● Extend the potential talent base and avoid hiring risks by moving to widespread C#/.NET ● Prepare for web, cloud, and AI initiatives without another rewrite● Reinforce compliance with auditable and testable architectures● Safeguard existing investment by migrating proven logic instead of refusing it
From Technical Perspective
● Transfer core business rules from Delphi UI code into reusable C# services● Move from form-based logic to a clean, layered system arrangement● Replace VCL/FMX interfaces with WinForms, WPF, or MAUI based on strategic needs● Standardize database access, transactions, and data contracts● Enable asynchronous processing, APIs, and CI/CD without safety risks● Introduce automated testing previously limited by legacy Delphi architectures
Book a 30-minute call to plan your Delphi to C# migration
Our engineers migrate Delphi applications to C# and .NET, modernizing legacy systems while preserving business logic, stability, and user workflows.
Delphi to C# Migration Services to Modernize Legacy Applications
We perform incremental migration where Delphi and C# systems run in parallel, without disruptive cutovers. Our engineers minimize interference with your team, integrating into your Git, CI/CD, security policies, and release cadence.
Delphi Code Conversion to C#
We transform Delphi code into C# by moving business logic from forms, events, and global state into structured, testable .NET services. Hidden dependencies are revealed and removed. Execution flow is refactored, while proven logic is preserved to minimize platform risk and guarantee maintainable, capable applications.
Delphi VCL/FMX UI Migration to .NET (WinForms/WPF/MAUI)
We migrate Delphi VCL/FMX interfaces to modern .NET frameworks (WinForms, WPF, or MAUI) by separating UI from business logic. This preserves workflows, while removing legacy dependencies, and delivers a stable desktop or cross-platform UI that is easy to support and evolve.
API & Integration Modernization
We transform legacy Delphi features into secure, structured APIs, replacing fragile desktop-only integrations. This opens the system to ERP, BI, cloud, and AI processes. Integrations are implemented gradually to keep operations stable and scalable for future expansion.
Legacy Refactoring & Architecture Upgrade
We revamp legacy Delphi systems by restructuring code, separating components, and implementing modular architectures. These upgrades cut maintenance costs, remove technical debt, and enable future evolution. Modern environments and scalable business logic become possible with minimal business disruption.
Testing, QA & Post-Migration Support
After migrating to the C# system, we validate it with thorough testing, adding regression coverage and automated QA, which was impossible with Delphi. With gradual releases and post-migration support, we guarantee resilient performance and convenient maintenance. Teams become able to perform ongoing updates, facilitating business continuity.
4 Steps to Successfully Convert Delphi Applications to C#
Step 1. Assess & Plan the Conversion
To convert Delphi to C Sharp efficiently, we assess source code, VCL/FMX dependencies, data access, and hidden logic to shape a structured strategy. The resulting roadmap clearly indicates what must be preserved and what should be redesigned for a safe C# conversion.
Step 2. Convert Core Logic and Libraries
We separate core application logic from Delphi UI code and rebuild it as independent C# services and shared libraries. The goal is to eliminate hidden dependencies, global state, and brittle execution chains, while retaining system functionality and reliability.
Step 4. Testing, Deployment & Support
We establish regression coverage previously impossible in Delphi, check real-world behavior, and launch in phases. We convert Delphi to C# only when performance and stability are proven, ensuring the full knowledge transfer. The new C# system is arranged for strength and maintainability.
Why Corsac Is a Trusted Partner for Delphi Migration and Modernization
Modernization is our core specialization
We aren’t a full-stack agency. We’ve built our team, processes, and tech strategy specifically to tackle legacy issues and help mid-market players scale and innovate.
Integration vs. Disruption
We integrate with your workflows, minimizing interference with your developers. While utilizing your Git, CI/CD, and tools, we operate independently, letting your team focus on their work.
Identification of hidden expenditures
Your aging system drains your business resources through slow hiring, security gaps, and delayed launches. We reduce these “dark tech debt” losses before they impact your revenue.
Respect for Existing Architecture and Leadership
We treat your system efficiently: evolve the functioning parts and replace only the ones that require change.
Fighting Tech Stagnation
Modernization efforts will be ineffective if the core issue is institutional rigidity. We reveal hidden limits and help grow with flexibility.
AI & Emerging Tech EnablementAI
We remove legacy barriers preparing your systems for advanced tech. You can embrace new tools with the future-ready and ROI-driven architecture.
Corsac’s Experts
Most Outsourcing Vendors
Corsac’s Experts
Corsac’s Experts
Most Outsourcing Vendors
Most Outsourcing Vendors
☑ Professional Tech Stagnation BreakersWe focus on modernization for companies unable to grow due to aging systems.
☒ Focus on Delivery vs. Your Business GoalsThey fulfill your task without seeking to address the issue at the root.
Corsac’s Experts
☑ Professional Tech Stagnation BreakersWe focus on modernization for companies unable to grow due to aging systems.
Most Outsourcing Vendors
☒ Focus on Delivery vs. Your Business GoalsThey fulfill your task without seeking to address the issue at the root.
☑ Architecture and LeadershipWe replace only what must be changed, protecting your investment and CTO’s credibility.
☒ Lack Domain ExpertiseDispersing the focus, they fail to meet specific Healthcare G and other industry requirements.
Corsac’s Experts
☑ Architecture and LeadershipWe replace only what must be changed, protecting your investment and CTO’s credibility.
Most Outsourcing Vendors
☒ Lack Domain ExpertiseDispersing the focus, they fail to meet specific Healthcare G and other industry requirements.
☑ Compliance From Commit to ProductionHIPAA, HL7/FHIR, SOC2, GDPR, ISO compliance is integrated into every stage.
☒ Apply a Standardized Modernization ApproachGeneralized practices, regardless of the product, team, or business specifics.
Corsac’s Experts
☑ Compliance From Commit to ProductionHIPAA, HL7/FHIR, SOC2, GDPR, ISO compliance is integrated into every stage.
Most Outsourcing Vendors
☒ Apply a Standardized Modernization ApproachGeneralized practices, regardless of the product, team, or business specifics.
☑ Integration over DisruptionIntegrating into your Git, CI/CD, and workflow tools, we make modernization visible, testable, and traceable.
☒ Disregard Your Legacy OpportunitiesInitiate full rewrites instead of using the working parts and considering business context.
Corsac’s Experts
☑ Integration over DisruptionIntegrating into your Git, CI/CD, and workflow tools, we make modernization visible, testable, and traceable.
Most Outsourcing Vendors
☒ Disregard Your Legacy OpportunitiesInitiate full rewrites instead of using the working parts and considering business context.
☑ Getting Rid of “Dark Tech Debt”We uncover hidden costs, feature delays, and security gaps and offer ways of their removal.
☒ Lack integration with your teamInsufficient collaboration leads to poor handover, with documentation debt and weak enablement.
Corsac’s Experts
☑ Getting Rid of “Dark Tech Debt”We uncover hidden costs, feature delays, and security gaps and offer ways of their removal.
Most Outsourcing Vendors
☒ Lack integration with your teamInsufficient collaboration leads to poor handover, with documentation debt and weak enablement.
☑ Modernization that Fuels LeadershipBy providing CEOs stakeholder-ready roadmaps and progress metrics, we enable well-grounded transformation.
☒ Code-First MindsetDevelopment happens in isolation, prioritizing code delivery over actual business value.
Corsac’s Experts
☑ Modernization that Fuels LeadershipBy providing CEOs stakeholder-ready roadmaps and progress metrics, we enable well-grounded transformation.
Most Outsourcing Vendors
☒ Code-First MindsetDevelopment happens in isolation, prioritizing code delivery over actual business value.
Industries We Work In
FAQ
What benefits can I get with Delphi to C Sharp migration?
By converting Delphi to C# and the modern .NET platform with a reliable modernization partner, you reduce operational risk stemming from OS changes, tooling limits, and vendor lock-in. Smooth release cycles are restored by eliminating the fear of upgrades. The potential talent base is extended, and the hiring risk is reduced thanks to widespread C#/.NET. Delphi to net migration prepares your system for web, cloud, and AI initiatives without another rewrite.
How to ensure that migration will be safe?
Before you start converting from Delphi to C#, you should conduct a pre-migration assessment. This includes the analysis of your existing Delphi application to identify weak areas, modernization priorities, and project scope. Clearly set your goal to determine the target architecture. Establish a strong testing strategy to ensure the app behaves as expected, and choose the right migration partner for a predictable journey.
How to address Delphi code conversion challenges?
To convert Delphi code to C# safely, you should apply a structured approach. Consider the differences in language and syntax, which may require manual regulation. Check component and library compatibility, especially with Delphi’s VCL and third-party libraries. Refactoring may be needed when moving monolithic Delphi architectures to modular C#. Don’t forget about proper database migration and thorough testing.
Is migration from Delphi to C# necessary for me?
It is worth considering the Delphi to C# migration for the following primary reasons. The pool of C# developers is much larger, which eases the recruiting process. C# and .NET provide superior integration opportunities with cloud services, breakthrough analytics, and modern development approaches. C# is suitable for modular design, enhancing maintainability and scalability. Finally, C# apps often have advanced security measures.
What is better: manual rewrite or automated tools?
When a Delphi to C# migration is performed manually, it guarantees complete control, with the opportunity to completely redesign the architecture and eliminate legacy issues. Automated conversion, on the other hand, significantly accelerates the process and reduces expenses. A professional modernization partner can competently combine both by automating only mechanical tasks, such as code scanning, dependency mapping, and data models.
Contacts
Contact Us Now for Seamless Software Modernization.
Ready to experience the Corsac Technologies difference?
Don’t let outdated systems slow your business down – connect with us today and let our experts transform your legacy software into modern, high-performing solutions. Schedule a consultation with our specialists now!
Modernization Experts
+1 416 505 4524moc.hcetcasroc%40ofni
Where to Find Us
Canada HQ: 16 Yellow Birchway, North York, ON, Canada M2H 2T3
U.S. Correspondence Address: 30 N Gould St #11138, Sheridan, WY, USA 82801
Ready to Upgrade Your Legacy System?
Fill out the form on the right.