Adding a border to part of the chart can help highlight important information, or simply make the chart look more attractive. The border style, color, rounding, and width can be set using the respective properties: BorderStyle, Color, Rounding, and Thickness. Using these properties you can create customized borders for any of the following chart elements:

• Header and Footer titles
• Legend
• ChartArea
• The entire chart

The following table defines and illustrates the effect of each value in the BorderStyleEnum:

Member name	Description	Effect
NotSet	Border style is not set and is inherited from C1Chart class.
None	No border.
Empty	Empty border.
Solid	Solid line border.
Raised	Raised 3D border, drawn using system colors.
Inset	Inset 3D border with bevel.
RaisedBevel	Raised 3D border with bevel.
InsetBevel	Inset 3D border with bevel.
Groove	Compound border (inset+raised).
Fillet	Compound border (raised+inset).
Double	Double solid line border.
Dashed	Dashed line border.
Opaque	The opaque border style ensures that anti-aliasing is turned off when drawing the border. Opaque borders ignore Rounding settings. This border style can be useful for generating chart images to be use with transparent backgrounds.

The border properties can be modified at design time using the Chart Properties designer, Properties window, or Chart Smart Designer. These properties are located under the Style nodes in the Visual Studio Properties window, which can be found on the Control, ChartArea, Titles, Legend, and ChartLabels objects.

To change the border style of the ChartArea at design time

To change the border style of the ChartArea element at design time using the Visual Studio Properties window, complete the following:

1. Expand the ChartArea node in the c1Chart1 properties window.
2. Expand the Style->Border property.
3. Click on the dropdown arrow next to the BorderStyle property and select a border style, for example Dashed.

To change the border style of the ChartArea programatically

To write code in Visual Basic

C1Chart1.ChartArea.Style.Border.BorderStyle = BorderStyleEnum.Dashed

To write code in C#

C1Chart1.ChartArea.Style.Border.BorderStyle = BorderStyleEnum.Dashed;

The dashed border appears around the ChartArea element like the following: