void searchAll()
{
dataGridView.Rows.Clear();
dataGridView.Refresh();
pcBLL = new ProductCategoryBLL();
ArrayList arr = pcBLL.searchAll();
foreach (object o in arr)
{
pcDTO = (PCategoryDTO)o;
int a = dataGridView.Rows.Add();
dataGridView.Rows[a].Cells[0].Value = pcDTO.CATID;
dataGridView.Rows[a].Cells[1].Value = pcDTO.CATNAME;
}
}