Custom Web User Control and a Custom Web Server Control

Question

Hi What is the difference between Custom web user control and a Custom web server control ?

Muralidharan Deenathayalan · Answer

User controls (ascx file) Easy to implement because you can visually drag & drop other controls on the markup part. Good designer support in Visual Studio Can only be reused in the same project You can also create templated user controls if you want (though not so commonly used) UserControl need *.ascx file to complete the instance initialization. Therefor you can not derive one UserControl from another. UserControl has *.ascx file so you can easy write a HTML. And ( the most advantage ) you can change content *.ascx of file and change the look of control in run-time of web application. Custom Controls (.dll file) Harder to create but there 's a whole variety of possible scenarios: Inherit from existing controls like Label Button ... Create a composite control Make templated + databound controls Great reusability in other projects Ideal to make frameworks that can be used company wide WebControl is only class in assembly so you can derive another control from them. WebControl has no *.ascx ( or another ) file co nobody can not change the look of this control ( unqualified web admins for example ).