About the application technologies and operation:

• Programming Language: C#
• FrontEnd Side: Windows Forms Application (WinForms)
• BackEnd Side: .NET Framework 4.5.2.

1. Restore necessary Packages on the selected project, run the following command in PM Console

   Update-Package -reinstall
   

Windows Forms (WinForms) is a UI framework for building Windows Desktop Applications. It is a .NET wrapper over Windows user interface libraries, such as User32 and GDI+. It also offers controls and other functionality that is unique to Windows Forms.

Here you can start component learning Windows Forms Application from the scratch step-by-step through source code.

In this tutorial, you explained some basic features of Windows Forms Application through source code and what you need to develop a basic desktop application.

• How you can Save App Settings in a Windows Forms Application with Application Settings (ApplicationSettingsBase) via a Quadratic Equation Solving Application.
• How you can build an MDI (Multiple Document Interface) Application via a simple Notepad and Photo Viewer functions.
• How you can implement and write-read INI file in an application.
• How you can Save and Open TXT file in a Windows Forms Application and How to use Jagged Array in C#.
• How you can set Font Attributes for the Windows Forms RichTextBox Control in the Divisor of the Interval - Example Application.