private void mnuSua_Click(object sender, EventArgs e) { if (tvPhongHoc.SelectedNode == null) { return; } frmTuyChon frm = new frmTuyChon(); if (frm.ShowDialog() == DialogResult.OK) { tvPhongHoc.SelectedNode.Text = frm.txtGiaTri.Text; } }
private void mnuThem_Click(object sender, EventArgs e) { frmTuyChon frm = new frmTuyChon(); if (frm.ShowDialog() == DialogResult.OK) { if (tvPhongHoc.SelectedNode == null) { TreeNode root = new TreeNode(frm.txtGiaTri.Text); tvPhongHoc.Nodes.Add(root); } else { TreeNode node = new TreeNode(frm.txtGiaTri.Text); tvPhongHoc.SelectedNode.Nodes.Add(node); } } }