Crop and resize an image in a WPF application

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C#

WPF

I want to crop and resize an image in a WPF application using c#, i tried with different methods got from google and in all the methods they are entering the height and width of the image in two textbox and crop the image based on the user inputs in a button click.Actually I dont want to crop the image by entering the height and width manually,I am looking for some methods which can be done through the mouse events which is more user friendly.Please suggest me some solutions or links to refer.

Thanks in advance