Drag vertical line annotations by the label

Hi,

I have a VerticalLineAnnotation that can be dragged over the chart by clicking and dragging on the line itself. (See attached image). The problem is, whenever I put the chart in front of a user, they try to drag by clicking on the label (the blue label with the time in the image).

How can I make this label draggable like the line?

Thanks.

Images

WPF VerticalLineAnnotation Label Drag

Robert Evans asked 6 years ago

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Answers (1)

I found a solution – I create the AnnotationLabel in code and forward its mouse events to the VerticalLineAnnotation:

var line = new VerticalLineAnnotation();
var label = new AnnotationLabel {Cursor = Cursors.Hand};

label.MouseDown += (sender, args) => line.RaiseEvent(args);
label.MouseUp += (sender, args) => line.RaiseEvent(args);
label.MouseMove += (sender, args) => line.RaiseEvent(args);

line.AnnotationLabels = new ObservableCollection<AnnotationLabel> {label};

Robert Evans answered 6 years ago

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