ContactManager is a Windows Forms application for managing phone contacts, designed to demonstrate the use of classic Object-Oriented Design Patterns such as Factory, Builder, Singleton, and Prototype.
The project is implemented in C# using .NET Framework.
- Create a simple and intuitive contact management interface
- Practice real-world application of design patterns in C#
- Showcase software architecture skills and clean code practices
- Add / edit / delete contacts
- Store contact information: name, phone number, email, category
- Contacts are managed in-memory (for demo purposes)
- Extensible architecture using design patterns
- Simple and clean Windows Forms GUI
| Pattern | Purpose |
|---|---|
| Factory | For dynamic creation of different contact types |
| Builder | To assemble complex Contact objects step by step |
| Singleton | Ensures one shared instance of the contact manager logic |
| Prototype | Enables cloning of contact objects for reuse or templating |
ContactManager/ │ ├── Forms/ # UI Windows Forms (Main screen, Add/Edit Contact) ├── Models/ # Core data models (Contact, Categories, etc.) ├── Patterns/ # Implementation of Factory, Builder, etc. ├── Program.cs # Entry point of the application ├── ContactManager.sln # Visual Studio solution file
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Requirements:
- Visual Studio (2022 or newer)
- .NET Framework (e.g., 4.8)
Steps:
- Clone this repo:
git clone https://github.com/MiryamMann/ContactManager.git
Open ContactManager.sln in Visual Studio
Click ▶ Run (or press F5)
TODO: Tests
Unit tests for business logic are planned for a future version.
Suggestions and PRs are welcome!