Question

How can I use lambda inside an if statement to compare a treenode’s value to an object value inside a list ? Currently I am trying something like this but it won’t work. Is there any better way to simplify my search?

if (tvItems.Nodes.Count > 0)
{
    // Get checked items
    listChecked= MenuItemDTOManager.GetMenuItems();
    //

    foreach (TreeNode parentNode in tvItems.Nodes)
    {
        if (listChecked.Find(s => s.menuId.ToString() == parentNode.Value.ToString()))
        {
            parentNode.Checked = true;
        }
    }
    // Traverse children
}

Answer 1

Should be using Any instead of Find:

if (listChecked.Any(s => s.menuId.ToString() == parentNode.Value.ToString()))
{
    parentNode.Checked = true;
}