Difference between User Controls and Custom server control

Difference between User Controls and Custom server control
【转载】
User control

1.Compiled at
runtime
2.HTML design (Visual design possible)
3.ASP.Net page model with code behind
4.Needs
ASP.NET .aspx page to exist (can be used)
5.No design time interface
(Only
a box representing the user control is available on an .aspx page)
6.Cannot
be added to the ToolBox


Custom Server
Control

1.Precompiled
2.No visual design. HTML needs to be declared
programmatically
3.Component model
4.can be used in .aspx pages, user
controls or other custom server controls.
5.Has design-time and run-time
interface
6. Can be added to the ToolBox (using drag and drop)

First,
a custom server control is precompiled, which gives it component-like behavior.
If we designed correctly, it looks, acts and feels just like a nASP.NET built-in
server control such as Text Box or label control.

A user control is
compiled at run time. When the compiler finds the register directive in an .aspx
page that points to a user control, it compiles the control before it inserts
its content into the .aspx page.

Second main difference is that when
using user controls, you hav ethe ability to create HTML in a designer. WE don’t hav ethe option with
the Custom server control.

Note:

User controls are best when we
create reusable user interface components for one specific application. Custom
server controls are best for small and distinctive user interface options that
can be used across many applications.

Log on for more good articles http://www.vkinfotek.com