Consider changing the Treeview's Scrollable property to True.

Remarks

The Treeview control's Scrollable property determines whether or not the control will display scrollbars when they are needed. If an Treeview's Scrollable property is set to False, it will not display scrollbars even if nodes are outside the client area.

Resolution

In general, the Treeview's Scrollable property should be set to True to ensure that users can access the nodes that extend beyond the borders of the control. Use the Windows Form Designer Properties Window to change the property.

See Also

TreeView.Scrollable Property