AJAX :: Concurrent XmlHttpRequest / Send Data From Server To Client?
Nov 24, 2010
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:
[code]
<!-- Test.aspx -->
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Test.aspx.cs" Inherits="Test" %>
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Mar 7, 2012
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Mar 16, 2011
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?
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Apr 16, 2010
I am trying to send JSON from my mozilla addon to my asp.net page.
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Mar 23, 2010
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Feb 27, 2010
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Nov 10, 2010
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Dec 24, 2010
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Feb 26, 2010
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Mar 4, 2010
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Feb 7, 2011
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Sep 16, 2010
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May 24, 2012
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Apr 9, 2010
ASP.NET Ajax Library provides some client-side events. For instance:
Sys.Application.add_load(
function(args) {
// handle the end of any asynchronous post-back. Every-time there's
// a server round-trip, this method will be called.
}
);
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Does the UpdatePanel or the ScriptManager have any server-side way to retrieve data back to client during an asynchronous post-back?
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Mar 7, 2011
I have a .net web application (framework 2.o) and SQL Server 2005 as my backend. I need to design an application which fetches a particular unique pin number to a customer and then mark this record as used. The problem I face is as the no of concurrent users are more , same pin number is getting allotted to multiple users.
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Oct 23, 2013
I want to send two Id when I click on linkbutton on client side how to concat this two Id I will show my code
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<asp:HiddenField runat="server" ID="hdnRevisionId" Value='<%#Bind("RevisionID") %>'
<asp:HiddenField runat="server" ID="hdnContractId" Value='<%#Bind("ContractId") %>'
<asp:LinkButton ID="lnkSelect" runat="server" Text="Select" OnClientClick="pageOpen();"> </asp:LinkButton>
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Sep 3, 2010
I'm trying to save some content whenever a button/hyperlink is clicked using jquery.ajax (Using Asp.net 3.5). The logic is as follows:
Through .bind in jquery I bind my own method(MakeLog) to a button click or hyperlink click. The click events of button/hyperlink contain nothing, I need to use .bind for selective controls.Now we have a button whose click event will fire a method, say MakeLog.Code snippet for MakeLog is as follows:
var xhr = jQuery.ajax({
url: "/Logger.aspx",
data: { content: logContent }, [code]....
This works fine in IE but in Firefox this is not sending the data back as expected.I tried to identify the issue and came across the following: http://stackoverflow.com/questions/3522944/jquery-ajax-calls-async-false-vs-async-true .What I understand is that, whenver page is redirecting/reloading due to button click or hyperlink click the async call is not working properly.
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Jun 10, 2010
In my ASP.NET MVC2 web app I have a page which goes off and gets results from a number of different web service feeds. These return times vary so I want to basically display them as they return after the page loads. I also want my user to be able to kick of requests that can run concurrently with these other requests.
At the minute my page just seems to queue up the requests. The web service calls returning one at a time in the order they are called and then the user can kick of requests.
Is this a case for the asyncController or is there an easier/better way of working this?
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May 22, 2010
I want to provide status updates during a long-running task on an ASP.NET WebForms page with AJAX.Is there a way to get the ScriptManager to execute and process a script for a web service request concurrently with an async postback? I have a script on the page that makes a web service request. It runs on page load and periodically using setInterval(). It's running correctly before the async postback is initiated, but it stops running during the async postback, and doesn't run again until after the async postback completes.
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Aug 24, 2010
Scenario:Own rolled jQuery Ajax post to validate an input field on unfocus Standard submit button for post on form
If I cause validation to fire and wait until I see it complete in firebug then click save all is fine. If however I leave a change in a field and then click the submit button directly (so both ajax and standard post happen at almost the same time) the request hangs in the browser before returning a 'connection reset'. If running in VS debug I see nothing unless I hit pause. I am then presented with the following callstack:
System.Web.dll!System.Web.Hosting.IIS7WorkerRequest.ReadEntityCoreSync(byte[] buffer, int offset, int size) + 0x23 bytes
System.Web.dll!System.Web.Hosting.IIS7WorkerRequest.ReadEntityBody(byte[] buffer, int size) + 0x18 bytes
System.Web.dll!System.Web.HttpRequest.GetEntireRawContent() + 0x2d4 bytes
System.Web.dll!System.Web.HttpRequest.GetMultipartContent() + 0x45 bytes
System.Web.dll!System.Web.HttpRequest.FillInFormCollection() + 0xad bytes
System.Web.dll!System.Web.HttpRequest.Form.get() + 0x45 bytes
System.Web.dll!System.Web.HttpRequest.HasForm.get() + 0x46 bytes
System.Web.dll!System.Web.UI.Page.GetCollectionBasedOnMethod(bool dontReturnNull) + 0x62 bytes
Background:ASP.NET 4 MVC 2 Web application with some legacy webforms pages (the page involved in both the ajax post and standard post is the same webforms page) running locally on Win7/IIS7.
I could potentially disable the submit button while the ajax validation fires. However even if I do that I'm intrigued to know what has caused this seemingly time based/concurrent request problem.
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Nov 22, 2010
We have an UpdatePanel that is showing a gridview with loads of data in it. We have loads of well written sprocs that don't take very long, BUT we have a few horrible ones that take ages.
We do intend to rewrite them but in the interim we have put the ADO.NET commandtimeout up to 180s. The scriptManager.AsyncPostBackTimeout is set to 240s. We want to handle this on the serverside. One of the reports still fails (it's got a couple of nested cursors in it - someone who hasn't had SQL lesson 101 from me!).
Half the time, the nice error timeout message is shown using server side handling of the command timeout. The problem is that the other half of the time the commandtimeout doesn't seem to fire.
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Aug 25, 2010
There is one more parameter to send with the request.
So this is my code so far:
$.post(url + "/SaveProfile", { xml: XML, configName: name}, function() {
alert("Saved");
});
I got this error :
A potentially dangerous Request.Form value was detected from the client
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Oct 19, 2010
I tried of creating a new object in javascript.
var ds= Ajax.Web.DataSet();
In project references i had added the Ajaxpro2.dll .
Do i need to install any custom libraries from javascript.
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Oct 30, 2010
Is it possible to send a binary file file from client to server using ajax???
am using ActiveXObject("Scripting.FileSystemObject") to get a binary file from client. I need to send the binary data to server.
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