[]
Specifies the text orientation for tick-mark labels.
public enum TickLabelOrientation
OrientationAutomatic = 4Specifies that the text orientation is set by Excel.
OrientationDownward = 1Specifies that the text is oriented down.
OrientationHorizontal = 3Specifies that the characters are horizontal.
OrientationUpward = 0Specifies that the text is oriented upward.
OrientationVertical = 2Specifies that the characters are vertical.