You control the label angle through the Angle property of the label style. The following code will tell the primary X axis to rotate labels at 90 degrees.

Notice that when you specify a scale label angle you also need to set its angle mode. The following table shows the possible angle modes:

ScaleLabelAngleMode	Description
View	The angle is specified in chart view space. This means that the angle will have the specified angle (in degrees) regardless of the axis 2D or 3D position.
Scale	The angle is specified in scale space. This means that the angle will be relative to the axis orientation at the value or range denoted by the label. For example when you set scale label angle of 90 degrees with ScaleLabelAngleMode.Scale to a horizontal scale the labels will be rotated. If you apply this setting to a vertical axis the labels will not be rotated.

The following pictures shows several charts and gauges with different settings for this property:

Chart with Y axis labels using ScaleLabelAngleMode.View, 0 degrees	Chart with Y axis labels using ScaleLabelAngleMode.Scale, 0 degrees
Gauge with axis labels using ScaleLabelAngleMode.View, 0 degrees	Gauge with axis labels using ScaleLabelAngleMode.Scale, 0 degrees

You may also tell the axis angle whether it will allow texts to flip (that is have right to left reading direction). The following code disables flipping:

When a label is placed on the scale its bounds may fall outside the ruler range. You can force both value and range labels to be completely inside the ruler range if possible by setting the KeepInsideRuler property to true. By default this property is enabled for range labels and disabled for value labels.

Label visibility is controlled by setting the label style VisibilityMode property. This property allows you to control the visibility of a label based on its position on the scale. The following table shows the possible options:

ScaleLabelVisibilityMode	Description
Always	The label is always visible and no check is performed for its relative position against the ruler. This is the default setting for value labels.
CenterInRuler	The label is visible when its center lies inside the ruler range.
TextInRuler	The label is visible when its text is completely inside ruler.
TextIntersectsRuler	The label is visible when its text bounds intersect the ruler range. This is the default setting for range labels.

The following code will change the label visibility mode of automatic labels in order to display them only when they are completely inside the ruler bounds:

The following pictures show how the VisibilityMode and KeepInsideRuler properties work together:

Scale with labels using ScaleLabelVisibilityMode.Always	Scale with labels using ScaleLabelVisibilityMode.TextInRuler	Scale with labels where KeepInsideRuler is set to true

The NRangeLabelStyle associated with range labels builds on top of the functionality provided by the NScaleLabelStyle base class by adding features specific to range labels. Therefore the following sections apply to range labels only.

Since range labels denote a range on the scale it is possible to determine the maximum space they should occupy. By default all range labels will wrap the text they display to the range they denote. To disable text wrapping you must set the WrapText property to false. The following code will create a range label without text wrapping on the X axis:

The following pictures show the effect of text wrapping:

Chart with custom range label that does not use wrapping	Chart with custom range label that uses wrapping

Each range label will also generate a range tick on the scale that pinpoints the range denoted by the range. You can control the tick mode by changing the TickMode property of the NRangeScaleLabelStyle class. The following table shows the available options:

RangeLabelTickMode	Description
None	The range label does not render ticks
Separators	The range label tick is visualized as two separators at the left and right of the range annotated by the label
Top	The range label tick is attached to the top of the label (this is the default)
Center	The range label tick is attached to the center of the label

The following code shows hot to change the range label tick mode of a custom range label:

The TickPadding, TickOffset, TextPadding and Offset properties work together to determine the offset of the range tick lines from the text as well as the vertical position of the range tick lines and text on the scale. They have different meaning depending on the tick mode. The following pictures show how these properties work together depending on the TickMode of the label:

RangeLabelTickMode.None - in this mode only TextPadding and Offset properties have any effect (as the label will not show a range tick). The picture below shows how text padding has limited the available space for the label. If the label uses wrapping if will fit in the range denoted by the blue lines:

RangeLabelTickMode.Top - in this mode TickPadding, TickOffset, TextOffset and Offset properties work together to determine the label appearance as shown on the picture below:

RangeLabelTickMode.Separators - this mode is similar to RangeLabelTickMode.None as only the TextPadding and Offset properties are regarded. The blue lines on the picture below show the available space for the label text. If the label does not use wrapping and is longer than the range then the separators will be hidden.

RangeLabelTickMode.Center – in this mode TickOffset, Offset and TextPadding have the same meaning as when the label ticks operate in RangeLabelTickMode.Top. The TickPadding property in this case is used to control the distance of the center lines from the label text as shown on the picture below:

The following code creates the label on the last picture (showing RangeLabelTickMode.Center):

Windows Forms : Axes \ General \ Custom Range Labels

Windows Forms : Gauge Gallery \ Gauges \ Axes \ Custom Range Labels

Web Forms: Axes \ General \ Custom Range Labels

Web Forms: Gauge Gallery \ Gauges \ Scales \ Custom Range Labels