Giáo trình WinForms

http://developersden.com/WindowsFormsUsingCS.html

https://www.accelebrate.com/training/windows-forms-development-c-sharp-2013

http://objectdiscovery.com/training/course/programming/microsoft/csharp/wf/outline.html

WinForms Effect

As SLaks has already said, that will be pretty annoying for the end-users.

If you ask whether it is doable, I would say yes, everything is doable in programming, it all depends on the effort you're ready to put into.

As a very simple algorithm, here are some steps I would go through for your achievement:

1. Create a System.Windows.Forms.Form;
2. Set Form.ShowInTaskBar= false;
3. Set the Form.TransparencyKey property;
4. Set the Form.ControlBox= false;
5. Set Form.TopMost= true;
6. Drop a PictureBox control on your Form;
7. On the Form.Load event, take a screenshot of the current desktop and set it as the image of your PictureBox.
8. Then, build an animated GIF, and superpose it to your form.

You will most likely appreciate, I guess, the following link which discusses about C# Winforms Animation.

MVP WinForms

http://aviadezra.blogspot.co.uk/2009/08/mvp-mvvm-winforms-data-binding.html

http://aviadezra.blogspot.com/2008/10/model-view-presenter-design-pattern.html

12 Tips To Speed-up Your Windows Forms Applications

12 Tips To Speed-up Your Windows Forms Applications

MDI Application Case Study

https://www.codeproject.com/Articles/1020908/MDI-Application-Case-Study-Part-I-Introduction

Advanced File Explorer using C# and Windows Forms

http://www.c-sharpcorner.com/article/advanced-file-explorer-using-C-Sharp-and-windows-forms/