CalculatorWindows

A simple desktop calculator built with C# and Windows Forms (.NET Framework). This project demonstrates event-driven programming, GUI component layout, and basic logic structuring for arithmetic operations.

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Technologies Used

• Language: C# (.NET Framework)
• UI Framework: Windows Forms
• IDE: Visual Studio
• Design Pattern: Event-driven architecture

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Features

• Basic arithmetic: +, -, ×, ÷
• Decimal input support
• CE (Clear Entry) and C (Clear All) functionality
• Support for chaining operations
• Keyboard input handling
• Prevents invalid expressions (e.g., division by zero)
• Optional form resizing behavior

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Project Structure

CalculatorWindows/
│
├── CalculatorWindows.sln              # Visual Studio solution file
└── CalculatorWindows/
    ├── Form1.cs                       # Code-behind for UI logic (event handlers)
    ├── Form1.Designer.cs              # Auto-generated UI layout and controls
    ├── Program.cs                     # Main entry point (Application.Run)
    └── Resources/                     # (Optional) Icons, fonts, or images

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Getting Started

Prerequisites

• Windows OS
• Visual Studio 2019 or later
• .NET Framework 4.x installed

Build & Run

1. Clone the repository:

   git clone https://github.com/AmirAbdollahi/calculatorwindows.git

2. Open CalculatorWindows.sln in Visual Studio.

3. Set CalculatorWindows as the startup project.

4. Press F5 to build and run.

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Testing

This project currently supports manual testing. You can test it by:

• Clicking UI buttons in different sequences
• Entering decimals
• Dividing by zero
• Using both keyboard and mouse input

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Future Improvements

• Memory functionality (MC, MR, M+, M-)
• Parentheses handling
• Complete keyboard-only interaction
• Expression parsing engine
• History panel for past calculations
• Unit tests using MSTest, xUnit, or NUnit

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Author

Amir Abdollahi
GitHub Profile

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License

This project is licensed under the MIT License.