private void txtSearch_TextChanged(object sender, EventArgs e) { if (txtSearch.Text != "") { if (cLogin.search == 0) { dataGridView1.DataSource = db.SearchNVMaNV(txtSearch.Text); } else if (cLogin.search == 1) { dataGridView1.DataSource = db.SearchNVHoTen(txtSearch.Text); } else if (cLogin.search == 2) { dataGridView1.DataSource = db.SearchNVNu(txtSearch.Text); } else if (cLogin.search == 3) { dataGridView1.DataSource = db.SearchNVDiaChi(txtSearch.Text); } else if (cLogin.search == 4) { dataGridView1.DataSource = db.SearchNVSoDT(txtSearch.Text); } else if (cLogin.search == 5) { dataGridView1.DataSource = db.SearchNVNgaySinh(txtSearch.Text); } else { dataGridView1.DataSource = db.SearchNVLuong(txtSearch.Text); } } else { LoadData(); } }