MapMemberIndex Property (BaseCreationParams)
Gets and sets the index of the MapMember in the map or group layer.
MapMemberPosition must be set to
MapMemberPosition.Index for this value to honored. If
MapMemberPosition is set to
MapMemberPosition.Index and this value is
NOT set, then the behavior will revert to auto arrange.
Target Platforms: Windows 11, Windows 10
ArcGIS Pro version: 3.4 or higher.