Dynamic change number of rows in a datagrid

I am loading a datagrid from a memory file loaded in a class. However, sometimes the number of records found do not fill the datagrid initial number of rows.
I have this..

dgPermits.DataSource = allpermitscon.LoadGrid_Mult_1(UserId , dgPermits.PageSize)
dgPermits.DataBind()
dgPermits.PageSize = dgPermits.Items.Count

But the pagesize does not change. I know and can see the dgPermits.Items.Count does generate the new value of items returned in the datasource. (saw 3).. I want this datagrid to contain ONLY 3 rows now..

gollnick