What is the difference between User Controls and Custom Controls?

When you say user control, this is known to be a type of page file that comes with an extension. The file extension of this is .ascx. This can be used for one specific project, or it can also be used for one particular application.

When you say custom controls, this is known to be very useful for different DLL files. Custom controls can be used for different applications. A custom control will have a dynamic layout, while a user control will have a static layout.

The UI for custom control can also be changed depending on the projects that you would use them with. The UI for user control will remain the same throughout because this can only be used for one project anyway.

A custom control is a loosely joined control defined in a class that stems from control. The UI of the custom control is usually demarcated in a resource wordlist inside the source file. They are fashioned according to the requirement of the business.

If you want to change the functionality of the existing controls, such as button or label, you can directly procure the new class with the current classes and can change their conduct. We can create themes for custom control and reuse them in different projects.

The base user control is almost like a custom control that you obtain to produce a control UI specific to your application. It provides the reusability of design and is made the same way as a web form. User controls are advantageous if they must be used only for a particular website. They have a visual interface.