//xu ly su kien cho from main load private void MainForm_Load(object sender, EventArgs e) { qlsv = new QuanLySinhVien(new TXTDataStorage("DanhSach.txt")); //qlsv = new QuanLySinhVien(new JSONDataStorage("DanhSach.json")); //qlsv = new QuanLySinhVien(new XMLDataStorage("DanhSach.xml")); LoadListViewItem(qlsv.GetListSinhVien()); }