Hello Bastian,

I am very glad that the approach I have suggested helped solving your issue. Please let me know if you need any further assistance on the matter.

Sincerely,

Krasimir

Developer Support Engineer

Infragistics

Hello Bastian,

I am just checking if you require any further assistance on the matter.

Sincerely,

Krasimir

Developer Support Engineer

Infragistics

Hello Bastian,

Thank you for your patience while I was investigating the issue that you have described. After researching it, I can suggest using a DataTemplate for the Marker, instead of using the StrokeThickness. By doing so, the Maker will take the size that it needs in order to display the content of the DataTemplate. I have changed the AddItem method of the SeriesBindingInfo class as follows in order to achieve what I have described:

private void AddItem(object item)
{
    if (SeriesTemplate == null)
    {
        return;
    }

    Series series = new Series();
    if (item is DataSeries && (item as DataSeries).ChartType == ChartType.Point)
    {
        string tempate =
            @"
            <DataTemplate 
                xmlns=""http://schemas.microsoft.com/winfx/2006/xaml/presentation""
                xmlns:x=""http://schemas.microsoft.com/winfx/2006/xaml"">
                <Grid>
                    <Ellipse 
                        Width=""" + (item as DataSeries).Thickness + @""" " +
                        @"Height=""" + (item as DataSeries).Thickness + @""" " +
                        @"Fill=""" + (item as DataSeries).Color +  @"""/> " + 
                @"</Grid>
            </DataTemplate>
        ";
                
        Marker marker = new Marker
        {
            UseDataTemplate = true,
            Format = " ",
            DataTemplate = XamlReader.Parse(tempate) as DataTemplate, 
        };
        series.Marker = marker;
    }

    series.DataContext = item;

    SetSeriesBindings(series);
    TargetChart.Series.Add(series);
}

I have also modified the sample application that you have attached, in order to implement the above changes.

Please let me know if you need any further assistance on the matter.

Sincerely,

Krasimir

Developer Support Engineer

Infragistics

Hello Ekaterina,

I disabled the fast rendering mode which solved our issue with the tooltip's. For now we can ignore the performance impact and I will try your suggestion with datapoint tooltips when I have more time.