Thank you for contacting us and for the detailed explanation.
You can create a CropCommandContext object with the desired parameters and pass it to RadImageEditor's ExecuteCommand() method later, together with the CropCommand.
For example, if you want to crop a rectangle with width and height of 100 and starting point with coordinates (0,0) from a loaded image in the RadImageEditor, you can use the following code snippet:
CropCommandContext context =
CropCommandContext(0, 0, 100, 100);
where the "ImageEditorUI" is the given value of a RadImageEditorUI's x:Name property in your XAML.
I hope this helps.
If you need further assistance, please get back to us.
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