delete Treenode not removed - treenode

Question

I am developing in Visual Studio 2012 web interface. When I remove a parent node it removes correctly, but when I try to remove a child node the node stays and does not seem to get removed. Both methods shows the same result.
Tree1.Nodes.Remove(e.Node);
This is a postback method removing the node with e as FineUI.TreeCommandEventArgs.
Tree1.Nodes.Remove(Tree1.SelectedNode);
This is another method to remove the node. There is no update or refresh method to refresh the tree. Both of which cannot delete a child node.
Another question would be that I want to update the database based on the SelectedNode, the SelectedNodeID contains a string with the ID value, but it exist in a form like fnode1 where I only want the integer value at the end. I want to know how to get just the integer value so I can delete the selected node from the database.

Answer 1

what u need to do is you need to take DefaultNode from Tree and then u have to Remove it. see this.
DefaultMutableTreeNode defaultMutableTreeNode = new DefaultMutableTreeNode(node_vervesystems);
model.removeNodeFromParent(defaultMutableTreeNode);
that will Work.
Here the Example for the same.
import javax.swing.JFrame;
import javax.swing.*;
import javax.swing.tree.*;
import java.awt.*;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
/**
*
* #author kishan
*/
public class JTreeRemoveNode extends JFrame{
public JTreeRemoveNode() throws HeadlessException {
initializeUI();
}
private void initializeUI() {
setSize(200, 400);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
DefaultMutableTreeNode root = new DefaultMutableTreeNode("Address Book");
String[] names = new String[] {"Alice", "Bob", "Carol", "Mallory"};
for (String name : names) {
DefaultMutableTreeNode node = new DefaultMutableTreeNode(name);
root.add(node);
}
final JTree tree = new JTree(root);
JScrollPane pane = new JScrollPane(tree);
pane.setPreferredSize(new Dimension(200, 400));
JButton removeButton = new JButton("Remove");
removeButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
DefaultTreeModel model = (DefaultTreeModel) tree.getModel();
TreePath[] paths = tree.getSelectionPaths();
for (TreePath path : paths) {
DefaultMutableTreeNode node = (DefaultMutableTreeNode) path.getLastPathComponent();
if (node.getParent() != null) {
model.removeNodeFromParent(node);
}
}
}
});
getContentPane().setLayout(new BorderLayout());
getContentPane().add(tree, BorderLayout.CENTER);
getContentPane().add(removeButton, BorderLayout.SOUTH);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
new JTreeRemoveNode().setVisible(true);
}
});
}
}
hope that will help.