Regarding Custom Code

Hello

I have report like this

list1

list2(includes in list1)

table (includes in list2)

end of list2

end of list1

Now I want to calculate the sum of one column in table when it contains particular value and I want to display in table footer . I already know using sum() fuction.I want to know using custom code calculation for the above problem(How Can I repeat my data set in Custom code function for each row). So , If anyone knows Please reply.

It's Very Urgent

Thanks

Have a look at these

http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=541699&SiteID=1

http://blogs.msdn.com/bwelcker/archive/2005/05/10/416306.aspx