computationally intensive task makes gui not updatable

Question

Hi all, I have a windows app that performs a computationally intensive task (encoding a lot of files). When I press the button to start the task, it seems that the app somehow hangs, in the sense that it doesn't update the gui, and doesn't repaint if another windows app covers and uncovers it. This is happenning until the taks is finished. To correct this, do I have to use threads? thnx, geo

Answer 1

hi deena 
i hope this link help you to write and read text 

http://www.aspdotnet-suresh.com/2010/12/how-to-read-and-write-text-file-using.html

Answer 2

Thank you sir.. i used Append keyword for updating values in the same file.. 
Thanks a lots..