📁 ASP.NET Core File Management API

A simple and secure file management system built with ASP.NET Core Web API. It provides endpoints for uploading, downloading, and streaming files with built-in validations.

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🚀 Features

• ✅ Upload single file
• ✅ Upload image with validation
• ✅ Upload multiple files
• ✅ Download files by ID
• ✅ Stream files efficiently

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🔒 File Validations

• ✅ Validate file name, size, and content
• ❌ Block executable files using file signature (magic number)
• 🖼️ Allow only specific image extensions (e.g. .jpg, .png, .webp)

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🛠️ Tech Stack

• ASP.NET Core Web API
• Entity Framework Core
• FileStream / MemoryStream
• SQL Server (or any EF-supported DB)

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📦 How to Run

1. Clone the repository:

   git clone https://github.com/your-username/your-repo-name.git

2. Navigate to the project folder:

   cd your-repo-name

3. Run the project:

   dotnet run

4. Access the API (with Swagger if enabled) at:

   https://localhost:{port}/swagger
   

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📂 Sample Endpoints

Endpoint	Method	Description
/api/files/upload	POST	Upload a single file
/api/files/upload-image	POST	Upload image only
/api/files/upload-many	POST	Upload multiple files
/api/files/download/{id}	GET	Download file by ID
/api/files/stream/{id}	GET	Stream file by ID

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Feel free to contribute or fork the repo for your own use!