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How to Develop your Own Custom Controls in C#

Custom control, the control with combined features of other controls, can be developed by any programmer easily. A custom control will not only be usable in the same application, but also it can be used in any other application that may be on other system. This designed control can be easily embedded in other applications.

Custom control have some basic features as well as some functionality that may be known by the programmer:
  • Improves encapsulation.
  • Simplifying a programming model.
  • Can swap out a control with another one.
  • Combines UI elements in a simple way.
  • Using these controls programmer can develop unique controls.

Types

User Control: combines other controls in a logical unit. Inherit from System.Windows.Forms.UserControl class.

Inherited controls: developed by an existing .NET control that is as close as you want to develop. We have to create a custom class and inherit an existing abstract class that is close to what we are developing.

Owner-drawn controls: inherit from a base class like System.Windows.Forms.Control. These controls provides most customizable UI.

Extender providers: These are used to add features to other controls on a form, means these are not necessarily at all.

These controls may be used in our other applications and it reduces the amount of code and the code duplication. It also helps in modularize your code. In the next article we will explain about the steps to create a custom control and also about the events, need to override to create custom textbox.

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             In memory the linked list is stored in scattered cells (locations).The memory for each node is allocated dynamically means as and when required. So the Linked List can increase as per the user wish and the size is not fixed, it can vary.

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  Suppose next node is allocated with an address with an address 10,s the list become,


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