Public Overloads Sub Move( _
   ByVal oldPosition As System.Short, _
   ByVal newPosition As System.Short _
) 

public void Move( 
   System.short oldPosition,
   System.short newPosition
)

Parameters

oldPosition

The current position (index) of the sheet you want to move.

newPosition

The new position to which you want to move the sheet. If the new position is less than zero, the sheet will be moved to the beginning of the collection (0). If the new position is greater than the upper bound of this collection, the sheet will be moved to the end of the collection.

Reference