I want to made custom verticalLine extension which drag to series point. I use MVVM pattern. I made a custom VerticalLine from VerticalLineAnnotationViewModel. I set X1 value from model then the position of line chaning, then I drag the line with mouse. I get the earlier value of X1 in the DragSarted event, not that value which I set in model.
How can I gat correct value from DragStart?
I found similar problem in forum https://www.scichart.com/questions/wpf/problem-setting-a-vertical-line-annotation-position-in-mvvm