AJAX :: Send Receive Data Between Server And Client Without Postback
Mar 7, 2012
as per my flow on every click i have a postback without which i cannot store data to client or server.i have 2 ways of data storing one is client side in javascript variables in form of array(which can be lost on postback) the data to be stored are of differnt types some are numeric , some single characters some sepearted with comma other way is on each post back save the data in a session varibale on server & then access currently i have second way considering both the ways and in accrodance with the current flow which is best for maintenance & access speed reasking as i am notyet cleared abt the things.
the idea id I need to send data to the client to the server to inform the server of some events at the client, and i need to send data from server to the client to inform the client of some results on the server. now from client to server is easy I use xhr easy enough. and to send data from server to client I thought of using long polling in xhr so to test I wrote the following code:
I wish to make a script which programatically send the POST data to one server and then the other server receive the POST message and retrieve the information. How should make this work? I already successfully write the sender site, the code as follow:
string postData = "id=0&co=5"; ASCIIEncoding encode = new ASCIIEncoding();
I am using the System.Timers.Timer class. And I enable when I send a message and disable when I receive the message. How do I calculate how much time has elapsed. I have set the interval as 1 sec
Basically I retransmit data after 1000 sec again if I do not recive an ACK. I retransmit 5 times max until I get a Ack. If I receive and something before 150ms then I stop retrnsmission.
I know that I can receive an javascript object from the server via ASP.NET AJAX using Json. But I am not sure how can I send an javascript object from my client-side javascript to my server-side code. And if I can, how can I extract this object in my server-side code and access its members?
I have a simple question - I use update panel with custom server control inside. I call __doPostBack from javascript and RaisePostBackEvent on the server fires (I implement IPostBackEventHandler).This is client to server call. Could I return data back to the client (after this partial postback)? What is the best way to achieve this?
I run a asp.net 4.0 website. (I did the porting from version 3.5 to 4.0)I receive the following error :ASP.NET AJAX client-side framework failed to loadn a page where I set scriptmanager EnableCdn="true" and there is a microsoft ajax extension Timer on the page.
[Code]....
I receive the error only on the production server.
I wanted to send and receive SMS from my application, as of the need i bought a Wavecom GSM Modem. I also downloaded ActiveXperts Toolkit for communicating with GSM Modem, i can be able to send SMS through the GSM Modem. have problem with receiving SMS.
I'm completely blanking here. I've got 2 servers that cannot talk to each other via normal network traffic (like just copying a file). I can't get FTP setup on either server due to artificial company security constraints.Server1 basically just has an exe on it that I have written, and it needs to send a file to Server2.Server2 has a full blown asp.net website on it so I'm writing a .ashx page to handle receiving the file.So...Server1 needs to make a call to server2 and send a file to it over http. Server2 needs to accept the file and save it to disk.Where should I start? I know I can make server1 create a WebRequest object, and set the methodto POST, and then stream the content.But on server2, what am I supposed to write? A generic handler? Will my file that I send be part of the context.Request object? How do I get it out?
I have create a website and i need to send/receive email from website . I am able to send email through system.net.mail namespace . But it needs an gmail id and password . I want to send email from my website like Username@mywebsite.com and also receive email from another domain like gmail.com . I didn't know how i can perform this task . I don't have a logic .
I have a website written in C# and when a user does something I want to be able to send an IM message to an admin and allow the admin to respond to approve/deny the request.
I would like to use something like MSN Messenger or AIM so that the IM messages can also be sent to phones as sms.
I've been stuck on this one for a while, so it's time to consult the pros. I've created a charting application that uses javascript to do heavy DOM manipulation/generation on the client (creating barcharts made of colored divs, etc).
Long story short, I want to avoid sending my js library to the client. Is there any way to create the content on the server, using my existing javascript library, and only send the javascript-generated HTML to the client?
I need to send a cookie to the my web site's visitors and receive them back for information. For example when machine1 visits my site if not set I set a cookie with "user1", for machine2 I set "user2" etc.
Actually I need to retrieve the cookie back from my log file, so I thought if I do this it will be saved to my log file.
I'm looking for possible ways for sending files from browser to server. One obvious way is using form with enctype='multipart/form-data'. I wonder if there are other ways than this.
The reason I ask you this question is this file uploader: http://aspnetajax.componentart.com/control-specific/upload/features/core_features/WebForm1.aspx
It's not flash based, but it sends the file in a way that it gives you a progress bar, but when you send a file with form with enctype='multipart/form-data' the whole file will be send to the server so you can't actually show a progress bar of uploading process.
I am developing the web site, It consists of device name list and related Build Button. When one click the Build button the one process will run in server. When more than ten user click the Build button more processes will create at that server will hang. How can send all request from client to single process in server.
I have a ListView that contains a large collection of rows with textboxes that users can optionally fill out. These textboxes are not databound. When the user clicks "next" i need to iterate over the rows and determine which fields the user has filled out, and then update a sort of "cart" with the data and move to a confirmation page ("you have selected a, g, v, zz, is this correct?" sort of thing).
I can think of two ways to deal with this. The first is, server side, to walk the items in the listview, get the control ID's, save this data to a list, then save it to a database cart table for the next screen to read.I can use jquery to collect all the values client side, then pass it back to the form in a hidden field and use something like Newton.Json to get the data into a similar list.What are the tradoffs of these two approaches?
I'm using what I believe is a pretty common/boring/generic implementation of a ModalPopupExtender. I'm using client-side JS to show the dialog when the user clicks a link, and hide it if they click "cancel". I only do a postback if they truly want to save the data.
I can click the link to show the dialog, then click the cancel button to hide it, then click the link to show it... ad infinitum. If I decide to save the data via a postback, everything works well, and the dialog is hidden as a result of the postback, all as expected.
However, once the postback completes, my client-side JS show() never works again. Any attempts to click the link fail quietly; no error messages, the dialog just never shows again.
