private void mnuSuaNut_Click(object sender, EventArgs e) { if (tvDuLieu.SelectedNode == null) { return; } frmThemNut frm = new frmThemNut(); if (frm.ShowDialog() == DialogResult.OK) { tvDuLieu.SelectedNode.Text = frm.txtGiaTri.Text; } }
private void mnuThemNut_Click(object sender, EventArgs e) { frmThemNut frm = new frmThemNut(); if (frm.ShowDialog() == DialogResult.OK) { if (tvDuLieu.SelectedNode == null)//muon tao nut goc{ { TreeNode root = new TreeNode(frm.txtGiaTri.Text); tvDuLieu.Nodes.Add(root); } else // tao nut con cua selected node { TreeNode node = new TreeNode(frm.txtGiaTri.Text); tvDuLieu.SelectedNode.Nodes.Add(node); if (node.Level == 2) { node.ImageIndex = 2; node.SelectedImageIndex = 3; } } } }