Please help, selecting 100 rows of data table by loop

Question

Hello,

 

i have data table  which does not have any id column. I select n rows by count(). but it does not work.

 

DataClasses1DataContext dc = new DataClasses1DataContext();

double cc=dc.k2s.Count();
double min = 0;
for (double i = min; i < cc; i++)
{ 

   function(i+100, min)

 

}

 

I need urgently

 

Thanks