C# – Hide WinForms TreeView plus sign


I have a WinForms TreeView with one main node and several sub-nodes.

How can I hide the + (plus sign) in the main node?

Best Solution

Treview Property: .ShowRootLines = false

When ShowRootLines is false, the Plus/Minus sign will not be shown for the root node, but will still show when necessary on child nodes.

With the Plus/Minus sign hidden, you might consider executing the Expand() method of the root node once the tree is populated. That will make sure that the root node shows all first-level child nodes.

Note: There is a ShowPlusMinus property on the TreeView, but it works on all nodes.