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Gets or sets the marker style for a point or series in a line chart, scatter chart, or radar chart.
Use this property to retrieve the current marker appearance applied to the series.
MarkerStyle MarkerStyle { get; set; }
Property MarkerStyle As MarkerStyle
worksheet.Range["A1:B4"].Value = new object[,] {{"X", "Y"}, {1, 2}, {2, 4}, {3, 3}};
IChart chart = worksheet.Shapes.AddChart(ChartType.XYScatterLines, 20, 20, 300, 200).Chart;
chart.SeriesCollection.Add(worksheet.Range["A1:B4"]);
ISeries series = chart.SeriesCollection[0];
series.MarkerStyle = MarkerStyle.Diamond;
MarkerStyle style = series.MarkerStyle;