Programmatically delete annotation

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Programmatically delete annotation

Post by iansml » Wed May 06, 2009 10:52 AM

Hi,

Is there any way I can programmatically remove an annotation? I am able to hide it using:

imageViewer1.SelectedAnnotation.Visible = false;

but it is still present in the ImageViewer.Annotations collection. I want it to be removed completely (like when I select an annotation and delete it manually using the delete key).

Thanks

Re: Programmatically delete annotation

Post by Alex » Wed May 06, 2009 12:00 PM

Hi Ian,

Thank you for your message. You can use the Remove method of the AnnotationCollection class. Here is an example:

AnnotationBase annoToRemove = annotationViewer1.Annotations[imageIndex][indexOfAnnoToRemove];
annotationViewer1.Annotations[imageIndex].RemoveAt(annoToRemove);

We will redefine the RemoveAt method of the AnnotationCollection class in next version of library and it will work correctly.

Best regards, Alexander

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