What is the difference between Custom Control and User Control?

Custom Controls are compiled code (Dlls), easier to use, difficult to create, and can be placed in toolbox. Drag and Drop controls. Attributes can be set visually at design time. Can be used by Multiple Applications (If Shared Dlls), Even if Private can copy to bin directory of web application add reference and use. Normally designed to provide common functionality independent of consuming Application.
User Controls are similar to those of ASP include files, easy to create, can not be placed in the toolbox and dragged – dropped from it. A User Control is shared among the single application files.

Difference Between User Control and Custom Control In Asp.Net?

User Controls: We need to implement with Predefined Functionality with Available Properties

Web User Controls:Web User Controls Implements Customized Properties and Customized Methods,we can develop any control with User defined Properties

How many types of controls in ASP.Net?

  1. User Control
  2. Custom Control
  3. Web parts

What method must be overridden in a custom control ?

The Render() method must be overridden in a custom control.