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add new treenode to treeview as child of selected node by Context menu

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Create a windows c# application which will

Read a xml file and populate nodes in the treeview.
1 On selection of treenode display the child nodes of that node in listview control

2. Provide following view properties to listview, through View menu

a. Tile

b. Icon

c. Details

d. List

3. Provide context menu on right click of treenode, which will add new treenode to treeview. Also, write that node in the xml file.

i have copleted till 3rd and want to complete 4th step.

My Code is-

using System;
using System.Collecti ons.Generic;
using System.Componen tModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows. Forms;
using System.Xml ;

namespace WindowsApplicat ion6
{
public partial class Form1 : Form
{
XmlDocument dom = new XmlDocument();
TreeNode tNode;
TreeNode n = new TreeNode();

public Form1()
{
InitializeCompo nent();
}

private void Form1_Load(obje ct sender, EventArgs e)
{
String st1 = Application.Sta rtupPath + "\\desktop.xml" ;
this.Text = "TreeView control from XML";


try
{
// SECTION 1. Create a DOM Document and load the XML data into it.
//XmlDocument dom = new XmlDocument();
dom.Load(st1);

// SECTION 2. Initialize the TreeView control.
treeView1.Nodes .Clear();
treeView1.Nodes .Add(new TreeNode(dom.Do cumentElement.N ame));
TreeNode tNode = new TreeNode();
tNode = treeView1.Nodes[0];

// SECTION 3. Populate the TreeView with the DOM nodes.
AddNode(dom.Doc umentElement, tNode);
treeView1.Expan dAll();
}
catch (XmlException xmlEx)
{
MessageBox.Show (xmlEx.Message) ;
}
catch (Exception ex)
{
MessageBox.Show (ex.Message);
}

}

private void AddNode(XmlNode inXmlNode, TreeNode inTreeNode)
{
//Local variable delaration
XmlNode xNode;
//TreeNode tNode;
XmlNodeList nodeList;
int cnt, max;

// Loop through the XML nodes until the leaf is reached.
// Add the nodes to the TreeView during the looping process.
if (inXmlNode.HasC hildNodes)
{
nodeList = inXmlNode.Child Nodes;
max = nodeList.Count;
for (cnt = 0; cnt <= max - 1; cnt++)
{
xNode = inXmlNode.Child Nodes[cnt];
inTreeNode.Node s.Add(new TreeNode(xNode. Name));
tNode = inTreeNode.Node s[cnt];
AddNode(xNode, tNode);
}
}

}

// Adding Items from TreeView to Listview After Selecting
private void treeView1_After Select(object sender, TreeViewEventAr gs e)
{

listView1.Items .Clear();
foreach (TreeNode t1 in treeView1.Selec tedNode.Nodes)
{
listView1.Items .Add(t1.Text, t1.ImageIndex);
}//End For
}

//Display Item in Tile View
private void tilesToolStripM enuItem_Click(o bject sender, EventArgs e)
{
listView1.View = View.Tile;
listToolStripMe nuItem.Checked = false;
detailsToolStri pMenuItem.Check ed = false;
iconsToolStripM enuItem.Checked = false;
}

//Display Item in Large Icon View
private void iconsToolStripM enuItem_Click(o bject sender, EventArgs e)
{
listView1.View = View.LargeIcon;
tilesToolStripM enuItem.Checked = false;
listToolStripMe nuItem.Checked = false;
detailsToolStri pMenuItem.Check ed = false;
}

//Display items in list View
private void listToolStripMe nuItem_Click(ob ject sender, EventArgs e)
{
listView1.View = View.List;
tilesToolStripM enuItem.Checked = false;
detailsToolStri pMenuItem.Check ed = false;
iconsToolStripM enuItem.Checked = false;
}

//Display Items in Detail View
private void detailsToolStri pMenuItem_Click (object sender, EventArgs e)
{
listView1.View = View.Details;
tilesToolStripM enuItem.Checked = false;
listToolStripMe nuItem.Checked = false;
iconsToolStripM enuItem.Checked = false;
}

private void newNodeToolStri pMenuItem_Click (object sender, EventArgs e)
{
int index;
string str = Microsoft.Visua lBasic.Interact ion.InputBox("A DD NODE","Input For new node", "", 10, 20);


TreeNode node = treeView1.Selec tedNode;


index = treeView1.Selec tedNode.Index;

node.Nodes.Add( str);

}


My problem-I am not able to Add node on selected node.I want to add new node as child of selected node.(viz. newNodeToolStri pMenuItem_Click () event)
i have problem in finding index of selected node through coding.

Plz try to help me out i am in need.

regards,
Divya
Feb 5 '08 #1
0 3308

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