Answer / nazrul

user control
1)it extension is .ascx.
2)it can be more than one on single web page.
3)it doesn't contain Contentplaceholder.
4)it doesn't work like a fixed template.it can be
display in diffrent manner in diffrent page.
MasterPage:
1) it extension is .Master.
2)it used like a template.
3)it contain ContentPlaceHolder.

Answer / venkatesh

Both are code reduce features and reusability Purpose.When
we create Masterpage that is common to overall
project,whereas user controls these r used when we have
requirement on specific criteria.
Master page ex: INBOX,SPAM,DRAFT,TRASH etc in YAHOO WEBSITE

Answer / jiten

Master has a conteact plceholder where u can put child page
in this cph.

when user control is uses with in page . u can not use any
page in user control

Answer / vdk

Master pages and user controils are two different concepts.

Master pages are used to provide the consistent layout and
common behaviour for multiple pages in your
applications.then u can add the Contenetplaceholder to add
child pages custom contenet.
User Controls:Sometimes u need the functionality in ur web
pages which is not possible using the Built-In Web server
controls then user can create his own controls called user
controls using asp.net builtin controls.User controlsn are
those with .aspx extensions and u can share it in the
application.

Answer / surender sardana

I Think Both are same but key difference is that , we can
not use mater page in user control................

Answer / ashish

master pages can not be cached.
user controls can be cached .

Answer / shaik mujahid

Master page inherits all child pages in contentplace holder
and usercontrol can be placed in master page

user control is a control which must be placed in a page to
perform specific task

Answer / jay

just a not :
this can be a tricky question depending on the interviewer.
Masterpage IS a UserControl, and you can easily check this
either by exploring classes to which websites are being
compiled or simply noting :
public class MasterPage : UserControl

semanticaly, use of classical UserControl and Masterpage is
of course different, but this already has been elaborated in
other answers

Answer / sandeep

Master page is just like a template and can be
reuse.

User Control provides structure,reuse ability and functionality

Answer / vimal katiyar

Master Page
1-extension .master
2- provide fixed layout and common behaviour in all
page of website
3-it contains content place holder
4-not contain cached

user control
1- .ascx
2- not fixed provide layout in each page
3- we use in master page also
4- not contain content placeholder

Rate yourself in .net and sql database?

1 Answers   BrickRed, Infosys, Satyam, SP Software,

what is caching,session? when & what is used mostly in which situtations, how they r implemented in real time? tell with example?

1 Answers   Satyam,

How can we make sure that Web API returns JSON data only?

0 Answers  

Why select Web API?

0 Answers  

What is mvc structure? given example? How to show gridview control from business components and using class object arrays?

3 Answers  

What are the asp.net list controls and difference between them?

0 Answers  

Life cycle of ASP.NET page when a request is made ?

4 Answers   MMTS,

on modify statement, executeNonQuery returns zero rows affected even though there has been modification carried out sucessfully in the table.. can anyone tell me is this possible??? if yes, how..???

1 Answers   ADITI,

What are asynchronous callbacks ?

6 Answers   Accenture, BirlaSoft,

What is server side session?

0 Answers  

Whats the difference between registerclientscriptblock, registerclientscriptinclude and registerclientscriptresource?

0 Answers  

What is http protocol and how it works?

0 Answers