I got stuck with one problem, in my code i have to make a sum request of all article that is present in my datatable, i concatenate all article ID in one string like \'a1,a2,a3\
I had p.Size = 200; inside my method that is adding the Sql parameters, i had to change it to p.Size = 8000; and it's working.
p.Size = 200;
p.Size = 8000;
Thanks everybody for the help !