You can find samples on Google, like :
https://www.c-sharpcorner.com/UploadFile/mahesh/wpf-magnifier-control/
https://www.codeproject.com/Articles/307239/Using-the-WPF-Magnifier
with
or
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How can I create magnifier with pixels grid in WPF app?
I need that pixels under cursor of mouse showing in circle of magnifier in enlarged size, for example like on photo.
You can find samples on Google, like :
https://www.c-sharpcorner.com/UploadFile/mahesh/wpf-magnifier-control/
https://www.codeproject.com/Articles/307239/Using-the-WPF-Magnifier
with
or