Right click on TreeView: Get the node clicked at

Problem:

There is a TreeView control with n number of nodes. When the user right clicks on the TreeView control, get the node on which the right click was performed.

Background:

In TreeView control, SelectedNode property is set whenever left click occurs. This is not true for right clicks. So, we need to have some workaround for this.

Solution 1:

The most popular solution is to handle the MouseDown event. Check if the click was a right click and then use the TreeView control’s GetNodeAt API to get the node which was clicked at.

private void treeView1_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Right)
{
TreeNode selectedNode = treeView1.GetNodeAt(e.X, e.Y);
MessageBox.Show("You clicked on node: " + selectedNode.Text);
}
}


Solution 2:

Handle the NodeMouseClick event. The TreeNodeMouseClickEventArgs has the node which was clicked at.

private void treeView1_NodeMouseClick(object sender, TreeNodeMouseClickEventArgs e)
{
if (e.Button == MouseButtons.Right)
{
MessageBox.Show("You clicked on node: " + e.Node.Text, "Solution 2");
}
}

SelectedNode property of a treeview is set whenever a left click occurs. Why can’t the same be applied for right click? Right click on a treeview is such a common UI event, that users will benefit from it.

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22 thoughts on “Right click on TreeView: Get the node clicked at

  1. fneep says:

    Excellent explanation and solutions. I wish Microsoft would just make a NodeMouseRightClick() event but until they do, this is the next best thing.

  2. “SelectedNode property of a treeview is set whenever a left click occurs. Why can’t the same be applied for right click?”

    This would cause an inconsistency for instance when you display a context menu and the user cancels the menu.

  3. Emil Essa says:

    I need to thank you very much and need to tell you that I’m use this code to select not in right and left click

    Me.TreeView1.SelectedNode = e.Node

  4. vytheese says:

    Excellent !! Thank you.

  5. Aravind says:

    we simply need to handle the NodeMouseClickEvent.

    private void treeView1_NodeMouseClick(object sender, TreeNodeMouseClickEventArgs e)

    {

    if (e.Button == MouseButtons.Right)

    {

    this.treeView1.SelectedNode = e.Node;

    }

    }

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  8. Real Drouin says:

    The exemple is fine for a WPF application but it doesn’nt work for a .Net application. That TreeNodeMouseClickEventArgs e) doesn’t exist.

  9. CrashPilot says:

    Excelent and usefull post, made my life a lot easier with the use of context windows, exactly what I was looking for

  10. Soul says:

    I want open a menu (example : “Open”;”Exit”) after right click on treeview .
    How to do it?
    Thanks!

  11. Duncan says:

    Cudos to Emil Essa…

    Just use E….e’s are good…as the old song says..

  12. Thanks for these simple solutions to the right-click issue I was having with a treeview.

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    IS is code of WPf or Windows Application????????????????

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