Q:
Can I keep track of the annotations that I add/remove using PDFNet Xamarin?
A:
You can use ToolManager’s added/modified/removed events to keep track of annotation modification.
See PDFNetAndroidXamarinSample and PDFNetiOSXamarinSample for example.
mToolManager.AnnotationAdded += ToolManager_AnnotationAdded; mToolManager.AnnotationModified += ToolManager_AnnotationModified; mToolManager.AnnotationRemoved += ToolManager_AnnotationRemoved;