Find node clicked under context menu

Question

How can I find out which node in a tree list the context menu has been activated? For instance right-clicking a node and selecting an option from the menu.

I can\'t

Answer 1

Here is how I do it.

private void treeView_NodeMouseClick(object sender, TreeNodeMouseClickEventArgs e)
{
    if (e.Button == System.Windows.Forms.MouseButtons.Right)
        e.Node.TreeView.SelectedNode = e.Node;
}

Answer 2

Reviving this question because I find this to be a much better solution. I use the NodeMouseClick event instead.

void treeview_NodeMouseClick(object sender, TreeNodeMouseClickEventArgs e)
{
    if( e.Button == MouseButtons.Right )
    {
        tree.SelectedNode = e.Node;
    }
}

Answer 3

Similar to Marcus' answer, this was the solution I found worked for me:

private void treeView_MouseClick(object sender, MouseEventArgs e)
{
    if (e.Button == MouseButtons.Right)
    {
        treeView.SelectedNode = treeView.GetNodeAt(e.Location);
    }
}

You need not show the context menu yourself if you set it to each individual node like so:

TreeNode node = new TreeNode();
node.ContextMenuStrip = contextMenu;

Then inside the ContextMenu's Opening event, the TreeView.SelectedNode property will reflect the correct node.

Answer 4

This is a very old question, but I still found it useful. I am using a combination of some of the answers above, because I don't want the right-clicked node to become the selectedNode. If I have the root node selected and want to delete one of it's children, I don't want the child selected when I delete it (I am also doing some work on the selectedNode that I don't want to happen on a right-click). Here is my contribution:

// Global Private Variable to hold right-clicked Node
private TreeNode _currentNode = new TreeNode();

// Set Global Variable to the Node that was right-clicked
private void treeView_NodeMouseClick(object sender, TreeNodeMouseClickEventArgs e)
{
    if (e.Button == System.Windows.Forms.MouseButtons.Right)
        _currentNode = e.Node;
}

// Do something when the Menu Item is clicked using the _currentNode
private void toolStripMenuItem_Clicked(object sender, EventArgs e)
{
    if (_currentNode != null)
        MessageBox.Show(_currentNode.Text);
}

Answer 5

Another option you could run with is to have a global variable that has the selected node. You would just need to use the TreeNodeMouseClickEventArgs.

public void treeNode_Click(object sender, TreeNodeMouseClickEventArgs e)
{
    _globalVariable = e.Node;
}

Now you have access to that node and it's properties.

Answer 6

Here is my solution. Put this line into NodeMouseClick event of the TreeView:

 ((TreeView)sender).SelectedNode = e.Node;