How to: Move a Worksheet to Another Location in a Workbook
This example demonstrates how to move a worksheet to another location in a workbook. To do this, call the Worksheet.Move method and pass the worksheet zero-based index specifying the position in the WorksheetCollection collection into which the worksheet should be moved.
// Move the first worksheet to the position of the last worksheet within the workbook. workbook.Worksheets.Move(workbook.Worksheets.Count - 1);
The image below shows how the worksheet moves from the first position to the last position in the workbook.