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Turning off value display on chart surface in vertical markers

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I can’t for the life of me work out how to do this!

We’re using vertical markers to show particular points of data on the graph. It all works fine, except there is a hovering ‘tooltip’ style on the chart surface (see image – the zero next to the marker dot).

Here is the initialisation of the markers: (slightly condensed)

        VerticalLineAnnotation newMarker = new VerticalLineAnnotation();

        newMarker.ShowLabel = true;
        newMarker.Stroke = Brushes.Red;
        newMarker.StrokeThickness = 4.0;
        newMarker.IsEditable = true;
        newMarker.LabelPlacement = LabelPlacement.Axis;
        newMarker.DragDelta += Marker_DragUpdate;
        newMarker.DragEnded += Marker_DragUpdate;
        if (!Value.HasValue)
          newMarker.X1 = Value.Value;


GraphMarkers is a property that is bound through our view model.

Kind Regards,


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Great Answer

I am considering applying server-side licensing for my javerScript application.

In the document below, there is a phrase “Our server-side licensing component is written in C++.”

However, there is only sample code on the provided github.

I wonder if there is a sample code implemented in C++ for server-side licensing.

Can you provide c++ sample code?
Also, are there any examples to run on Ubuntu?

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Good Answer

Just so summarize the comments above – the VerticalLineAnnotation does not provide the tooltip marker by default, so to use this, you need to use the VerticalSliceModifier.

There is a demonstration here: Series Vertical Slices Example

There are also some options here which can help configure the appearance of tooltips, or when they appear with the VerticalSliceModifier: Hiding VerticalSliceModifier Tooltips

Best regards,

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Image didn’t want to attach, trying again….

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