For this example, we'll start with a curve solid that is generated by assigning a circle curve as the bevel to a the standard bezier curve. Extrude along Curve
The first feature we'll cover is displaying the wireframe overlayed on the solid view. This can simply be done by checking the wire box in the Display section of the Object panel.
When this is checked you should see the view below. The solid, but now with the wireframe. If the curve were converted to a mesh at this stage, this is what the mesh would look like.
This now allows us to be able to manipulate the notional mesh fidelity using the Resolution values on the Curve Panel in the Shape section.
At this point, the curve could be converted to a mesh if desired using the [Alt+C] command