Thinks at a backgammon online multiplayer game with over 100, or even 1000 online users. The game communication is done using Ajax + 3 seconds Comet connection interval + ASP.NET technology. Is this a real scenario ?
Didn't so many Comet open connections block the server resulting in big latency ?
have here a (internal intranet) site where users can preserve places for the lunch and pause... :)Now, meanwhile the users count grows more and more and the ajax site that speeks with a webservice for the calculations und checks geting slower and slower... user 900+The site checks every 5 seconds for the actual state and uses groups for the users.Ok, now i have researched on the web, and found the comet/reverse ajax aproach that the service can push the clients with events.But i have not found any good asp.net tutorial with visual studio (2010) how i can use the asp.net standard controls and vs design mode.Is there a framework for that stuff?
View 3 RepliesI'm trying to implement an auction website and I search in web the Ajax Push is the best way where I can use! So, I'm finding some samples in web to learn how to implement Ajax Push (comet) in client and server. By the way, I find some samples in ASP.Net Webforms, but no in MVC version. I'd like to find a demo, sample, anything ... that use MVC
View 3 RepliesI am looking for ASP.Net MVC implementation for reverse ajax comet/polling. Can anyone provide some good link or tutorial
View 2 RepliesI implemented a chat using the COMET "way" described in this article: http://www.codeproject.com/KB/aspnet/CometAsync.aspx
In this example, the client connects for 5 seconds every time. I wanted to hold the client longer, for about 10 minutes.
My problem is - how to detect if the client disconnected during those 10 minutes? I tried using Response.IsClientConnected but it returns true even if I close the client. There must by some inidicator since the socket gets disconnected if I close the client.
What is the correct way (or best) way to implement Comet, HTTP Push, or Reverse AJAX?What .NET implementations would you recommend?
View 1 RepliesI'm working on a Web project using Asp.Net MVC, which I'll have to deploy to a farm environment.
I've read a lot of articles and I'm thinking on disabling completely the SessionState, I think this would make a more robust application, and will save me a couple of headaches (Everything I've read tells me that handling sessions on a farm isn't trivial).
There are some things that I still don't have totally clear with this approach though, the main one being the authentication/authorization process. Basically I'm not sure of how (if?) I can handle user sessions if there's no SessionState enabled on the server.
If a user logs into the web site and then tries to access another page, how can I know that the user is already logged in?
I know using cookies is insecure, I thought of a mix of cookies with the session Id stored in the DB, but I suppose that if I disable SessionState I won't have access to the session id either.
I got experience in ASP.NET application development. Now I want to develop my own application that should support huge traffic and it should be scalable. My site publishes news, videos and images.
Having already experienced in ASP.NET, whether it is fine to go with ASP.NET or Google AppEngine is good for building scalable application? To move with Google AppEngine, I need to learn entire concepts from the scratch. whether ASP.NET support will support to process heavy page requests or not.
Summary: ASP.Net website with a couple hundred users. Data is exported to Excel files which can be relatively large (~5 MB).
In the pilot phase (just a few users), we are already seeing occasional errors on the server in the exporting method.
Here's the stack trace:
System.Web.HttpUnhandledException: Exception of type 'System.Web.HttpUnhandledException' was thrown. --->
System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown. at
System.IO.MemoryStream.set_Capacity(Int32 value) at
System.IO.MemoryStream.EnsureCapacity(Int32 value) at
Even aside from this particular problem, in general exporting to Excel requires the instantiation of huge Excel objects on the server for each request, which I've always assumed to mean disqualifies Excel for "serious" work on a highly-loaded server. Is there any general way to export to Excel in a "light-weight" manner? Would simply streaming the data into a CSV file work for this?
Do all comet style applications require a loop somewhere in the application on the serverside to detect updates/changes? how the logic behind a loopless comet style application would work?
View 3 RepliesI'm making an application with server sided variables that change every second. Every second those new variable need to be shown at all the clients that have the webpage open. Now most people told me to go with comet because I need to push/pull the data every second, now I've got a few questions: What would be a better solution looking at the fact that I need the new data EVERY SECOND, pulling from the client or pushing with the server?
Also the item ID's that are on the server side (with the variable's that ID got) can change and when the client refreshes the page he needs to get the oldest (and living) ID's. This would mean that my jquery/javascript on the client side must know which ID's he got on the page, what is best way to do this? Last thing is that I can't find a good (not to expensive) comet library/api for asp.net (C#). Anyone ever used a comet library with good results? We're looking at a site that should be able to have 2000 comet connections at every moment.
I am looking for a free implementation for Comet or Push. Here is an example of chat done by comet:http://www.phpchatsoftware.com/phpbb/I have my own server.Is there any thing like this?P.S. I am using asp.NET, on server and jQuery on client.Is there anything new? or maybe this is the last technological free open source achievement:http://www.codeproject.com/KB/aspnet/CometAsync.aspx ?
View 4 RepliesHi,
We host a web portal for the recruitment of staffs. The portal had close to sixty thousand (60,000 applicants/day) successfully registered applicants a day and at its peak period during the day the portal was hit with close to ten thousand (10,000 applicants/hour)
registrations an hour.
The Application process includes a number of functions such as
- Mail confirmation
- Upload of images
- Generation of unique Identification Numbers
- Providing information for the completion of the Application Form of various categories
- Print out of the Application Form
The form also maintains a login profile for each successful applicant and this is seen at the top of the application form when the user is logged in.
ARCHITECTURE
- The system was built using ASP.NET and MSSQL was used as a database for the data collected on the same physical server
- ASP.NET membership was the Application Programming Interface (API) used for user authentication and role management due to its flexibility and the ease of use.
- The passwords are hashed in the database.
- LINQ was used as the adapter for data handling to the database server
- Uploaded images was stored in a folder in the file system
HOSTING PLATFORM
- 32-bit processor
- Rackspace cloud computing
- 8Gig RAM
- Windows server 2008
ISSUES ENCOUNTERED
- At peak period, the portal was overloaded and had a very slow response time
- SQL server reporting services ran out of memory when we generated reports due to size of the report.
We want an overhaul of the architecture that would enable more applications to be filled simultaneously without issues i.e. a site that can sustain the load, But I am not sure what to do.
any advice would be great in regards to architecture?
When iam try to add ajax control dll file to my ajax toolkit given in visualstudio express edition 2005, i am getting the following error.
"There are no components in 'C:ProgramFilesMicrosoft ASP.NETASP.NET 2.0 Ajax Extensionsv1.0.61025AJAXExtensionsToolbox.dll' that can be placed on the toolbox." what is the error in this?
"getting following error at runtime on this line 'd:hgactServerAjaxControlToolkitExtenderBaseExtenderControlBase.cs'. "
View 3 RepliesI am tring to use Jquery autocomplete into my asp.net 2.0 application, I have all necessary file in place, I tried to worked on , but it seems like this is not working,can some one tell me that is asp.net 2.0 application without using AJAX toolkit works with Jquery autocomplete or it does not work?Note: this is plain asp.net 2.0 web application, it is not using AJAX.
View 6 RepliesI have an ASP.NET form with several update panels. All works great.I use a timer and have it handle some periodic upates. That works correctly too. However, I appear to get an error when I leave the page open running in the debugger. Specifically the above JScript error 12030.I'm not clear how to find the source but I assume it is because my page has logged out. If I refresh I go back to my login page.So, does this sound like the cause? If so, how to I address this?
View 2 RepliesI have a ajax Popup extender which contains a grid and when i select a row a value should pass into the textbox in the parent page. i created every thing but the value is posted in the textbox. The Grid is loaded perfectly and the popup shows but when i click the select command field inside the grid the popup disappers but the value is not loaded in the textbox. help me am struck up with this for a very long time.
//aspx
[Code]....
//CS[Code]....
I am fairly new to web development & stuck up using the ajax:popupExtender inside a gridview/Itemtemplate. So, would like to get help from experts in the forum
[Code].....
Currently I m developing a web page which holds a grivview. As one of the column needs a multiple column dropdown with soring facility, I am using ajax:popupExtender to achive that. Basically in the column i have a Panel1(label & image which mocks up has a dropdown), ajax:popupExtender, Panel1(gridview to have mutiple column). When user clicks on it the ajax:popupExtender is called & the targetpopupid which is a panel2 with gridview is called.
Here when user clicks on thePanel1, I am able to display Panel2 using ajax:popupExtender. Also, when user selects some row, I am able to close/hide the ajax:popupExtender in the code behind using cancel(). (this is done in selectItemIndexchange of panel2 grid view).
But my problem comes when user doesn't select any row & clicks back on the panel1, the ajax:popupExtender will remain open. but it should have been closed as i am trying to mock up dropdown dunctionality. how can I hide/close ajax:popupExtender when user clicks on panel1 2nd time.
Following are the different approaches I tried but nothing worked out.
1. wrote JS, & tried to add attributes of the Panel1's onclick event.
Failed: Error - Object is undefined. even though i passed a valid obj from code behind.
<script language="javascript">
I'm using callout ajax control but i'm getting an error "sys.extended.UI.PositioningMode.Absolute"
View 2 RepliesI am using ASP.Net 3.5. I have fiiled dropdown list in javascript using ajax service but unable to get its selected value in button click event on server side.
View 1 RepliesI am new to WCF, I was using web service asmx before. I have trouble on making my wcf JSON ajax service work through http like asmx.Could you help me see what wrong in my code?My WCF services are defined in my website application folder. My aim is to call this service in my aspx page java-script code and return complex object back as JSON to my javascript. I have no problem on doing this through classic asmx web service.
When I try to test it through my browser by type this in the URL , URL-http://localhost:3849/WebServices/Account/WCFCompanyService.svc/GetAll. it return "Method not allowed."
But if I type just this URL-http://localhost:3849/WebServices/Account/WCFCompanyService.svc, it return this:
WCFCompanyService Service
You have created a service.To test this service, you will need to create a client and use it to call the service. You can do this using the svcutil.exe tool from the command line with the following syntax:
svcutil.exe URL-http://localhost:3849/WebServices/Account/WCFCompanyService.svc?wsdl
This will generate a configuration file and a code file that contains the client class. Add the two files to your client application and use the generated client class to call the Service. For example:
C#
class Test { static void Main() { HelloClient client = new HelloClient();
[Code]....
This is my Ajax-enabled WCF service code:
[Code]....
This is the web.config service model setting
[Code]....
i have used ajax control toolkit masked editor extender.i want to remove "_" from masking pattern and want to replace it with space. for ex. want " - - " instead of this
<
asp:MaskedEditExtender
ID="MEETxbPhone"
TargetControlID="txbPhone"
Mask="999-999-9999"
[code]...
In my application I am using ajax updatepannel in which there is a tab container tool having 4 tabs, in the third third tab I used ajax accordian control which has 2 panel each pannel have one gridview control a Remove button. Here what I want to give delete facility to the user upon the selection of checkbox corresponding to the particular record. But when I click the button it doesnot triger the button click event of the remove button.
sorce code :
[code].....
How i can create collapsible textbox with jquery or ajax control toolkit.
View 1 Replies