Create CONTRIBUTING.md

Author: yehiarasheed

CONTRIBUTING.md

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+# Contributing to Telecom Customer Data Management System
+
+Thank you for your interest in contributing to **Telecom Customer Data Management System**! Whether you're here to report a bug, suggest a new feature, improve the documentation, or contribute code, your efforts are greatly appreciated. This guide will help you get started.
+
+## Table of Contents
+- [Code of Conduct](#code-of-conduct)
+- [How to Contribute](#how-to-contribute)
+  - [Reporting Issues](#reporting-issues)
+  - [Suggesting Features](#suggesting-features)
+  - [Contributing Code](#contributing-code)
+- [Development Setup](#development-setup)
+- [Pull Request Process](#pull-request-process)
+- [Style Guidelines](#style-guidelines)
+- [Attribution](#attribution)
+
+## Code of Conduct
+
+Please note that this project is governed by a [Code of Conduct](#). By participating, you are expected to uphold this code. If you encounter any unacceptable behavior, please report it to [yehiarasheed@gmail.com](mailto:yehiarasheed@gmail.com).
+
+## How to Contribute
+
+### Reporting Issues
+
+If you find a bug or have an idea for an improvement, please let us know by creating an issue:
+1. Navigate to the [Issues](https://github.com/yehiarasheed/Telecom-Customer-Data-Management-System/issues) section.
+2. Search to see if the issue has already been reported. If so, feel free to add any additional information or comments.
+3. If not, create a new issue with a clear and descriptive title.
+4. Provide as much detail as possible: steps to reproduce, expected results, and screenshots if applicable.
+
+### Suggesting Features
+
+We welcome suggestions that can enhance the system:
+1. Open a new issue in the [Issues](https://github.com/yehiarasheed/Telecom-Customer-Data-Management-System/issues) section.
+2. Describe the feature you'd like to see, why it's important, and how it could benefit the project.
+
+### Contributing Code
+
+If you're interested in contributing code, that's fantastic! Here’s how to get started:
+1. Fork the repository to your GitHub account.
+2. Create a new branch from `master` for your changes (e.g., `feature/my-new-feature`).
+3. Make your changes in the new branch.
+4. Ensure your code adheres to the [Style Guidelines](#style-guidelines).
+5. Write tests for your changes, if applicable.
+6. Commit your changes with clear, concise commit messages.
+7. Push your branch to your forked repository.
+8. Submit a pull request (PR) to the `master` branch in the original repository.
+
+## Development Setup
+
+### Prerequisites
+- Visual Studio (Latest version recommended)
+- SQL Server
+- .NET Framework
+
+### Setting Up the Project
+1. Clone the repository:
+   ```sh
+   git clone https://github.com/yehiarasheed/Telecom-Customer-Data-Management-System.git
+   cd Telecom-Customer-Data-Management-System
+   ```
+2. Open the project in **Visual Studio**.
+3. Set up the database:
+   - Open **SQL Server Management Studio**.
+   - Execute the provided database schema script to create the required tables.
+   - Update the connection string in the configuration file if necessary.
+4. Build and run the project:
+   - In Visual Studio, select **Debug > Start Without Debugging**.
+   - The application should launch in your default web browser.
+
+## Pull Request Process
+
+1. Before submitting a PR, ensure your code follows the project's [Style Guidelines](#style-guidelines).
+2. Make sure all tests pass and consider adding new tests for your changes.
+3. Once your pull request is submitted, it will be reviewed by the mastertainers. We might request changes, so please be responsive.
+4. After approval, your PR will be merged into the `master` branch. Thank you for your contribution!
+
+## Style Guidelines
+
+To mastertain consistency across the codebase:
+- Follow the standard C# coding conventions.
+- Use meaningful variable and method names.
+- Document your code with clear comments where necessary.
+- Keep methods small and focused—preferably, a method should do one thing only.
+- Test your code thoroughly before submitting.
+
+## Attribution
+
+- If you’re using third-party resources (libraries, code snippets), ensure they’re properly attributed.
+- All contributors will be acknowledged in the project documentation.
+
+---
+
+We appreciate your contributions to making **Telecom Customer Data Management System** better! If you have any questions or need assistance, feel free to reach out via GitHub Issues. Happy coding!
+
+---