refresh excel data

Dear all,

I have written the c# program to manipulate excel.
When I open the workbook and set some values to the worksheet,
I want to be able to see the values changed.

I have set xlApp.visible which will make the worksheet visible.
But when string in the cells change, it does not get refresh.

Is it possible to do so? How to do??

Yes, this should be possible. It is however t to comment on your specific situation without seeing the details of how to instantiated the Excel object you are working with. You might want to study this CodeProject article on how to automate Excel with C# to see whether you might want to adopt any aspect of it:

http://www.codeproject.com/KB/office...ing_excel.aspx