Problem with using datagridview in Windows Form Application

Question

Hi, 
I am writing a windows form application. I am using a Tabcontrol1 in that one more tabcontrol2 In this Tabcontrol2 I am having a datagridview. The rows and columns will be populated programatically. The problem is it taking lot of time to populate. I have tried using threads but of no use. Can anyone suggest how to proceed on this. Thanks in advance.