Contact
Vietnam flag Japan flag

Case Studies

Conversion of Sales System from Delphi to C#

Conversion of Sales System from Delphi to C#
The goal of this project was to modernize an old sales system developed on the Delphi platform, by fully rebuilding it using Microsoft C#.
This project was not just a language migration, but also aimed at improving performance, maintainability, and ensuring future scalability.

Scope and Scale:

  • A total of over 200 key functions were successfully converted.
  • Components involved:
  • User Interface (UI): Redesigning and redeveloping the all screens based on modern interface standards.
  • Reports: Converting the entire business report system into a new format, ensuring accurate and easily understandable data.
  • Batch Processing: Rewriting tasks for periodic data processing, calculations, and synchronization to run smoothly on the .NET platform.

Implementation Approach:

  • Analyzed the original Delphi source code to understand the business logic and process flow.
  • Rebuilt each function in C#, ensuring compatibility and retaining the business logic.
  • Optimized the source code structure to be more maintainable, scalable, and compliant with modern programming standards.
  • Integrated continuous testing (manual and automated) at each stage to identify bugs early and ensure system quality.

Results Achieved:

  • The new system successfully passed multiple rounds of functional testing and integration testing, ensuring accurate and stable operation.
  • It was officially released (go-live) and deployed in the live environment, completely replacing the old system without disrupting business operations.
  • The client highly appreciated the improved performance, modern interface, and easy maintainability of the new system. Conversion of Sales System from Delphi to C#.

Other Projects