What is the difference between a control’s Enabled and Visible properties in Winforms, and how would you use them to make a control appear or disappear during runtime?

In Winforms, the Enabled and Visible properties of a control serve different purposes.

The Enabled property determines whether a control can respond to user interaction. When a control is disabled (Enabled = false), it appears grayed out and cannot be clicked or typed into. This property is often used to temporarily prevent user input on a control without completely hiding it from view.

On the other hand, the Visible property controls whether a control is displayed on the form. When a control is set to not visible (Visible = false), it is hidden from the user's view and does not take up any space on the form. This property is commonly used to show or hide controls based on certain conditions or user actions.

To make a control appear or disappear during runtime, you can manipulate these properties in your Winforms application code. For example, to hide a control named "button1" at runtime, you can use the following code snippet:

```csharp
button1.Visible = false;
```

Similarly, to disable the control "textBox1" during runtime, you can use:

```csharp
textBox1.Enabled = false;
```

By changing the values of Enabled and Visible properties dynamically in response to user actions or program logic, you can effectively control the visibility and interactivity of controls on a Winforms form at runtime.