How To Make A Simple Magnifier In C#

Today we are going to make a simple magnifier in visual c# so let's continue. If you don't know what is a magnifier?.
A screen magnifier is software that interfaces with a computer's graphical output to present enlarged screen content. It is a type of assistive technology suitable for visually impaired people with some functional vision; visually impaired people with little or no functional vision usually use a screen reader. Wikipedia
Actually we are going to make a screen magnifier not just a magnifier the word magnifier refers to a scientific instrument.