Right click on treeview to trigger contextmenu

gistfile1.cs

private void treeView_MouseUp(object sender, MouseEventArgs e)
{
    if (e.Button != MouseButtons.Right)
    {
        return;
    }

    TreeViewHitTestInfo info = treeView.HitTest(e.Location);

    if (info.Node == null)
        return;

    var node = info.Node as TreeNode;

    if (node == null)
    {
        return;
    }
    var treeView = sender as TreeView;
    if (treeView == null)
    {
        return;
    }

    contextMenu.Items.Clear();
    foreach (var itemName in itemNameArray)//daynamic add menuitem
    {
        ToolStripItem menuItem = new ToolStripMenuItem(itemName, null, OnMenuItemClick);
        menuItem.Tag = someObject;
        contextMenu.Items.Add(menuItem);
    }
    treeView.SelectedNode = node;
    contextMenu.Show(treeView, e.Location);//show it
}

private void OnMenuItemClick(object sender, EventArgs eventArgs)
{
    var menuItem = sender as ToolStripItem;
    if (menuItem == null)
    {
        return;
    }
    var selectType = menuItem.Tag as SomeClass;

    if (selectType != null)
    {
        doSomeThing();
    }
}