C# Projects with Source Code — 55+ Free C# + SQL Server Tutorials & Mini Systems (2026)

itsourcecode.com hosts 55+ free C# projects, code snippets, and SQL Server tutorials (2026) — full Windows Forms management systems and reusable how-to patterns for DataGridView, ListView, ComboBox, autocomplete, and login flows. Most projects use Visual Studio + SQL Server 2005-2019 (or LocalDB for development). Browse the management systems below if you need a capstone-scale project, or jump to the C# + SQL Server reference snippets if you need a specific control pattern.

Why C# is still a panel-friendly capstone stack in 2026

Two reasons C# stays relevant for BSIT capstones: (1) Windows Forms + SQL Server is the “professional Microsoft stack” — panels familiar with VB.NET, .NET Framework, or enterprise software recognize C# instantly. Smoother defenses than newer stacks. (2) Visual Studio Community is free + powerful — IntelliSense, debugger, designer surface for forms. Lab machines run it well on 8GB RAM.

Featured C# capstone-scale projects

🏥 Healthcare & Management

• Hospital Management System

🎓 School, Student & Library

• School Management System
• Library Management System
• Student Evaluation System
• Student Grading System

💼 HR, Payroll & Leave

• Payroll Management System
• Leave Management System

🛒 Shop, Inventory & Billing

• Inventory Management System
• Pizza Ordering System
• Cafe Billing System

📦 Other systems

• Investment Management System
• Open Source Project Management Software

C# + SQL Server reference snippets

Need a specific Windows Forms control pattern? These how-to posts give you copy-paste C# code for the most common SQL Server-backed UI tasks.

🔐 Login, Registration & User Management

• Login Code with SQL Server
• Login System with SQL Server 2005
• Login User and User Registration
• User CRUD in C# and SQL Server
• Validate Registration Form (Regex)

🔌 Database connection (MySQL & SQL Server)

• Connect MySQL Database to C#
• Connect SQL Server to C#
• Save and Retrieve Data (MySQL)
• Save and Retrieve Data (SQL Server)
• Retrieve and Delete Data (MySQL)
• Retrieve and Update (MySQL)
• Update Data (SQL Server)
• Delete and Retrieve (SQL Server 2005)
• Multiple Save with SQL Server

📊 DataGridView

• Populate DataGridView with MySQL
• Add Columns/Rows Programmatically
• Search Data in DataGridView
• Fill DataGridView Based on ComboBox
• Autocomplete TextBox Column in DataGridView
• AutoComplete ComboBox in DataGridView
• Calculate Total Quantity in DataGridView

📋 ListView, ListBox & ComboBox

• Load Data in ListView
• Search Data in ListView
• Load Data in ListBox
• Get Value Member in ListBox
• Get Value Member in ComboBox
• Search Records via ComboBox
• Fill ComboBox with Two Display Members
• Save and Fill ComboBox

📝 TextBox & Form Controls

• Auto-Suggest in TextBox
• Multi-Column AutoComplete TextBox
• AutoNumber in TextBox
• Create TextBox Programmatically
• Clear Multiple TextBoxes
• Validate TextBox with ErrorProvider
• Add Button Programmatically

🧮 Calculators & Utilities

• Calculator in C#
• Simple Calculator in C#
• MDAS Calculator in C#
• Calculate Age with Zodiac Sign
• Date and Time Calculation Methods
• Segregate Days and Time
• Get Time Interval
• Create and Read Text File

📚 Intro tutorials

• 01 — Introduction to C#
• 02 — Syntax in C#

About this C# projects collection

Curated since 2015 by PIES Information Technology Solutions, Binalbagan, Negros Occidental, Philippines. Each project tested in Visual Studio + SQL Server before publishing. Used by 12,000+ BSIT students monthly.

Related capstone project collections

• C Projects with Source Code — 70+ C language mini projects
• C++ Projects with Source Code — 60+ C++ OOP mini projects
• VB.NET Projects with Source Code — 20+ VB.NET capstone projects (sister Microsoft stack)
• Java Projects with Source Code — 120+ Java + NetBeans capstones
• Best Python Projects with Source Code — 250+ Python capstone projects
• UML Diagrams Library — 300+ ER, DFD, Class, Use Case diagrams