ActiveReports 13
Markers
ActiveReports 13 > ActiveReports User Guide > Concepts > Section Report Concepts > Section Report Toolbox > Chart > Chart Appearance > Chart Control Items > Markers

Use markers to show specific data series values in a chart. Markers are created by setting the Marker property of the series.

The following code demonstrates how to create a marker object at run time and assign it to the Marker property of the Series object. The results are shown in the image above.

To write code in Visual Basic.NET

Visual Basic code. Paste INSIDE the section Format event
Copy Code
' create the marker object
Dim marker1 As New GrapeCity.ActiveReports.Chart.Marker

' set the marker properties.
marker1.Backdrop = New Chart.Graphics.Backdrop(Chart.Graphics.GradientType.Horizontal, Color.Navy, Color.Black)
marker1.Line = New Chart.Graphics.Line(Color.White)
marker1.Label = New Chart.LabelInfo(New Chart.Graphics.Line(Color.Transparent, 0, Chart.Graphics.LineStyle.None),
New Chart.Graphics.Backdrop(Chart.Graphics.BackdropStyle.Transparent, Color.White, Color.White,
_ Chart.Graphics.GradientType.Vertical, System.Drawing.Drawing2D.HatchStyle.DottedGrid, Nothing,
_Chart.Graphics.PicturePutStyle.Stretched),
New Chart.FontInfo(Color.White, New Font("Arial", 8.0F)), "{Value}", Chart.Alignment.Center) marker1.Size = 24 marker1.Style = Chart.MarkerStyle.Diamond ' assign the marker to the series Marker property Me.ChartControl1.Series(0).Marker = marker1

To write code in C#

C# code. Paste INSIDE the section Format event
Copy Code
// create the marker object
GrapeCity.ActiveReports.Chart.Marker marker1 = new GrapeCity.ActiveReports.Chart.Marker();

// set the marker properties
marker1.Backdrop = new GrapeCity.ActiveReports.Chart.Graphics.Backdrop(GrapeCity.ActiveReports.Chart.Graphics.GradientType.Horizontal,
System.Drawing.Color.Navy, System.Drawing.Color.Black); marker1.Line = new GrapeCity.ActiveReports.Chart.Graphics.Line(System.Drawing.Color.White); marker1.Label = new GrapeCity.ActiveReports.Chart.LabelInfo(new GrapeCity.ActiveReports.Chart.Graphics.Line
(System.Drawing.Color.Transparent, 0, GrapeCity.ActiveReports.Chart.Graphics.LineStyle.None), new GrapeCity.ActiveReports.Chart.Graphics.Backdrop(GrapeCity.ActiveReports.Chart.Graphics.BackdropStyle.Transparent,
System.Drawing.Color.White, System.Drawing.Color.White, GrapeCity.ActiveReports.Chart.Graphics.GradientType.Vertical, System.Drawing.Drawing2D.HatchStyle.DottedGrid, null, GrapeCity.ActiveReports.Chart.Graphics.PicturePutStyle.Stretched),
new GrapeCity.ActiveReports.Chart.FontInfo(System.Drawing.Color.White, new System.Drawing.Font("Arial", 8F)),
"{Value}", GrapeCity.ActiveReports.Chart.Alignment.Center);
marker1.Size = 24;
marker1.Style = GrapeCity.ActiveReports.Chart.MarkerStyle.Diamond; // assign the marker to the series Marker property this.ChartControl1.Series[0].Marker = marker1;
See Also