473,414 Members | 1,674 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,414 software developers and data experts.

asynchronous, callback, dropdownlist, v2.0

Hi,

i have 3 DropDownLists which are all bound to a seperate SqlDataSource.
How can I realize the following problem?

The user selects a value from the first dropdownlist... after this the
other
2 dropdownlist should be updated without a PostBack...
They should be updated asynchronous with a callback.

Is this posible?

How?

Thanks a lot.

Alex

Dec 14 '05 #1
2 1500
> i have 3 DropDownLists which are all bound to a seperate SqlDataSource.
How can I realize the following problem?

The user selects a value from the first dropdownlist... after this the
other
2 dropdownlist should be updated without a PostBack...
They should be updated asynchronous with a callback.

Is this posible?


this is possible and, in fact, quite easy. the trick is called "Scripting
Callbacks" and you will easily find docs and references.

Wiktor Zychla
Dec 14 '05 #2
i used now "ajax". thanks a lot.
"Wiktor Zychla [C# MVP]" <wz*****@nospm.ii.uni.wroc.pl.nospm> schrieb im
Newsbeitrag news:%2****************@TK2MSFTNGP15.phx.gbl...
i have 3 DropDownLists which are all bound to a seperate SqlDataSource.
How can I realize the following problem?

The user selects a value from the first dropdownlist... after this the
other
2 dropdownlist should be updated without a PostBack...
They should be updated asynchronous with a callback.

Is this posible?
this is possible and, in fact, quite easy. the trick is called

"Scripting Callbacks" and you will easily find docs and references.

Wiktor Zychla


Dec 15 '05 #3

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

1
by: Sai Kit Tong | last post by:
I have to interface managed application with my legacy dll. I have employed the wrapper approach but I have to deal with the asynchronous callback from the legacy dll, which likely goes through a...
1
by: Natalia DeBow | last post by:
Hi, I am working on a Windows-based client-server application. I am involved in the development of the remote client modules. I am using asynchronous delegates to obtain information from...
8
by: TC | last post by:
Hello, I am making an asynchronous call to a webservice and trying to update the web page with the results. The page is not updating. Does anybody know why??? Below is my code:
1
by: MSDN | last post by:
Does anyone know how to do this with a readline statement or equivalent method? Thanks in advance. Chris
7
by: Siv | last post by:
Hi, I have a stored procedure that I want to execute and then wait in a loop showing a timer whilst it completes and then carry on once I get notification that it has completed. The main reason...
2
by: archana | last post by:
Hi all, I am processing asynchronous web request with setting timeout using RegisterWaitForSingleObject. On beginwebrequest i am sending address of one callback which i want to execute when...
0
by: Bishoy George | last post by:
Hi, I have a asp.net 2.0 web application. I want to implement the asynchronous model through http handler in web.config ...
3
by: =?Utf-8?B?bWs=?= | last post by:
Hi everyone, I need to refactor some of our processes using the asynchronous programming model. I have defined a couple of arrays of delegates to pipline the asynchronous invocations through...
2
by: Morgan Cheng | last post by:
In asynchronous model, BeginXXX method returns a IAsnycResult-derived object. IAsyncResult.AsyncWaitHandle will be signaled when the asynchronous job is complete; and BeginXXX method has a argument...
0
BarryA
by: BarryA | last post by:
What are the essential steps and strategies outlined in the Data Structures and Algorithms (DSA) roadmap for aspiring data scientists? How can individuals effectively utilize this roadmap to progress...
1
by: nemocccc | last post by:
hello, everyone, I want to develop a software for my android phone for daily needs, any suggestions?
1
by: Sonnysonu | last post by:
This is the data of csv file 1 2 3 1 2 3 1 2 3 1 2 3 2 3 2 3 3 the lengths should be different i have to store the data by column-wise with in the specific length. suppose the i have to...
0
by: Hystou | last post by:
There are some requirements for setting up RAID: 1. The motherboard and BIOS support RAID configuration. 2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...
0
marktang
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However,...
0
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven...
0
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows...
0
tracyyun
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each...
0
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.