Telephone Book (SQL) Application

Telephone Book (SQL) Application is a Windows Forms app written in C# that manages contact lists, including names, phone numbers, birthdays, and photos.

Features

• Add, edit, or delete contacts.
• Search contacts by name, phone number, or birthday range.
• Display imported contacts photos.
• Prevent duplicate phone numbers.
• User-friendly interface.

Getting Started

Prerequisites

• Visual Studio (or any C# IDE)
• SQL Server (or SQL Server Express)

Installation

• Download or clone the repository.
• Open the solution in Visual Studio.
• Update the database connection string in 'app.config'.
• Build and run the application.

Usage

• Use buttons to manage contacts: "New", "Edit", "Delete".
• Select a cell to display contact information.
• Double-click cells to edit contact details.
• Search contacts with search fields.
• Import photos with the "Import Image" button.
• Save changes using "Save", discard with "Cancel".