Each axis has major and minor ticks. The position of the ticks is determined by the current axis scale object.

Major Axis Ticks

Major ticks are displayed on the inside and the outside of the chart, and their names define the orientation they have toward the chart center. The length of the major inner and outer ticks is controlled with the OuterTickLength and InnerTickLength properties of the Axis object, respectively. By default the inner and outer tick length is set to 0.04 Model units. The following code will increase the length of the outer ticks and decrease the length of the inner ticks of the PrimaryY  axis.

Dim chart As Chart = CType(chartControl1.Charts(0), Chart)
Dim axis As Axis =   chart.Axis(StandardAxis.PrimaryY)
axis.OuterTickLength = 0.06F
axis.InnerTickLength = 0.02F

Chart chart = (Chart)chartControl1.Charts[0];
Axis axis = chart.Axis(StandardAxis.PrimaryY);
axis.OuterTickLength = 0.06f;
axis.InnerTickLength = 0.02f;

Minor Axis Ticks

Minor ticks are drawn between major ticks on the outside of the chart. Their length can be controlled with the MinorTickLength property. By default their length is set to 0.02 Model units. The following code increases the size of the minor ticks.

axis.MinorTickLength = 0.04F

axis.MinorTickLength = 0.04f;

Controlling the Appearance of Ticks

Both kinds of ticks are rendered as simple lines. The properties of these lines can be controlled through the OuterTickLine , InnerTickLine, and MinorTickLine properties, which give access to the LineProperties objects controlling the appearance of the respective ticks. 

The following examples apply different colors to the axis ticks:

' inner ticks with red color
axis.InnerTickLine.Color = Color.Red
  
' outer ticks with blue color
axis.OuterTickLine.Color = Color.Blue
  
' minor ticks with yellow color
axis.MinorTickLine.Color = Color.Yellow

// inner ticks with red color
axis.InnerTickLine.Color = Color.Red;
 
// outer ticks with blue color
axis.OuterTickLine.Color = Color.Blue;
 
// minor ticks with yellow color
axis.MinorTickLine.Color = Color.Yellow;

Related Examples

Windows Forms: Axes\General\Ticks

See Also

Axis | LineProperties