Hi Sanjay,
In ypur tabtaype you have a comma seperated string. So after splitting you will get an array of integers. Like:
string tabtype = ",7,8,11";
int[] nums = Array.ConvertAll(tabtype.Remove(0, 1).Split(','), int.Parse);
You now have an array of Company. Loop this and use these ids.
Hope this helps !! :) :)
Regards,
Praneet