Answer / alb.shah

Callback : It is a way to send a request to the web page
from the client script. Postback is an expensive call with
processing overhead. In callback a client function sends a
request and a special marked method is invoked on the
server. It does the processing & returns the value which is
received by another client function to process the result.
To have client side callbacks, the page has to implement
ICallbackEventHandler & implement functions
RaiseCallBackEvent & GetCallBackResult.

PostBack: Postback is the event which sends the form data to
the server. The server processes the data & sends it back to
the browser. The page goes through its full life cycle & is
rendered on the browser. It can be triggered by using the
server controls.

Callback is also the form of Postback, but the difference
is in postback execute a complete page life cycle and whole
page redraw, in callback only specific portion (Contorl) is
executed/redraw using client side scriptiong.

What is the difference between an EXE and a DLL?

18 Answers   Infosys, JK Associates, Persistent, TATA, Technosoft, Wipro,

---

Explain the concept of MVC Scaffolding?

0 Answers   B-Ways TecnoSoft,

---

What is data caching?

0 Answers  

---

how we use web services

2 Answers  

---

Describe the role of inetinfo.exe, aspnet_isapi.dll andaspnet_wp.exe in the page loading process.

1 Answers  

---

How can we Maintain more than on config file in one .Net web application and how?

1 Answers   USi,

---

How to refresh a page in asp.net

4 Answers  

---

What are the intrinsic objects present in ASP.NET

1 Answers   IBM,

---

What is web.config. How many web.config files can be allowed to use in an application?

6 Answers   Accenture, HCL, InterGraph, iSoft,

---

I am opening Crystal Report in asp.Net 3.5. Report is opening very well but when I click on Refresh button of Crystal Report then it gives "Missing Parameter values" I also tried property of CR Viewer like crViewer.ReuseParameterValuesOnRefresh = True But it is not working. Plz give me solution.

1 Answers  

---

When does a session actually start?

0 Answers  

---

What are the parts of an http response?

0 Answers  

---