Microsoft.office.interop.excel is very slow while updating the PageSetup

Question

Earlier I had a same issue(slow), while updating the data into excel Rows, that time i used appl.screenupdating =false. it gets 200% speed and increased the speed while updating the excel rows. but, still it is slow while updating PageSetup. Here is my code, could you please help me on this.

  ExcelApp.ScreenUpdating = false; 
  sheettExcel.PageSetup.LeftFooter = "Test"; 
  ExcelApp.ScreenUpdating = true;

Answer 1

If you really want to optimize your code you need:

Application.ScreenUpdating = False
Application.EnableEvents = False
Application.Calculation = xlCalculateManual

[YOUR CODE HERE]

Application.Calculation = xlAutomatic
Application.ScreenUpdating = True
Application.EnableEvents = True

The Application.Calculation property allows setting an XlCalculation value that represents the calculation mode. See How Excel determines the current mode of calculation for more information.