C# - Synchronize Count Down Time For All Users?
Mar 15, 2010I need to synchronize the count down time for all users.So it will display identical remaining time to all in asp.net.
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Web Forms :: How To Synchronize Users Requests / Threads
Feb 6, 2011I have what I consider a pretty complex situation that I am not sure if it can even be accomplished via an ASP.NET web application. (I am using aps.net 4.0) But what I want to do is design a "online auction site" that can handle many autions running at the same time. So I can only imagine eBay and all the other millions of auction sites out there are all doing this someway or another. My biggest concern is that I want to make sure the design here to make the site as effiecent as possible. Here is specifically what I am trying to figure out.
I think I need to create an object (per active auction) that stays in memory for the life of the auction. This object would have at least the following information:
Aution ID, time remaining, highest bidder id, bid price, Thread Control Variable, etc...
Now here is the tricky part that I think is vital for auction sites. Lets say you have 500 users on my website that are all watching the same auction and it is getting down to the last second of the auction and they all click to place a bid at the same time. Keep in mind this may also be at the same time hundreds of other users are placing bids for other auctions going on all at the same time.
How do I get all these requests (bids), for a single auction, lined up so that they are processed "one at a time"? But some how I need to be able to make all requests wait in a queue until it is their "turn" then I would need to be able to update the in memory object, write a record into a SQL database and then begin returning information back to each user.
Based on other development languages I have used in the past I know their were objects that I could create that could be used to get multiple threads to run in order (in other words syncronized). Usually it would be a case where I would be listening on a server socket and could do something like ThreadVariable.Lock, <process the request>, thenThreadVariable.Unlock. What that would do, is force all threads that tried to call ThreadVariable.Lock to wait until no other threads had the variable locked then it could proceed. Obviously the code it processes between the lock and unlock should be as quick and effecient as possible so it does not create a major traffic jam.
Because my thinking is this "object" I am referring to as being in memory, most likely will play a big role in answering the question about getting the requests in a "one at a time" situation it may be the focus of the question is more like how would I create "an object" and store it in memory to be quickly and easily accessed?
And even more generically does this even sound like I am on the right track
I think the topic of "communication to and from users" will need to be a completly different thread.
Count Number Of Users Locked Out / Approved?
Aug 1, 2010I have got the total number of registered user's and the total number of users online working without any problems after a search on here.
[Code]....
but I would like to expand this a little. Can any one tell me how I would display the total number of users who are approved and the total number who are locked out.
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May 3, 2010I would like to know the number of users logged into my ASP.NET 2.0 application.
Points to be considered:
1) Simplest way would be to use Application or Cache object to have the counts on Session start or end. However this would fail if there is a worker process recycle. Wouldn't it?
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State Management :: Count The Number Of Users Per Webpage?
Sep 27, 2010I have a website that has 10 aspx pages in it, and I'm trying to count how many users are on any one page at a time, and display that number on the web page. I have set it up to use an Application object ("TotalViewers"), and initialize it to 0 in the Application_Start event handler of the global.asax file. My reasoning (probably way off base) is to increment the count on each page load, and then decrement the count on each page unload. The increment part works ok, but when I add the code in the page unload event handler to decrement, it seems that Unload happens before the Page is presented to the client, so the value always stays the same (adds one in page load, subtracts one in page unload).
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All my pages are being navigated via a TreeView control.
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Apr 8, 2010I would like to know if anyone knows of any way or software that will give me a count of the number of unique users to use my site in the last 5 minutes. I want to make some updates to my site during the day but I want to check to see if there is slow traffic then I can do it but if it's busy I can wait till a later time.
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Display Count Down Time In Label?
Dec 13, 2010I created the form in which i am showing count down time in label.
below is the code
[Code]....
Even i show the time in various format means Hour, Seconds, Tick but difficulty is that i want to show time in "hh:mm:ss" format & Time in label will be decreasing.
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Jul 14, 2010I recently re-develop our company's web system. However, when I just finished everything, our internal user complains that the page is noticable slower than the old one. I tested it on my machine and it seems to be ok. As it is a major concern of my manager, I decide to add a bit of code to return the time comsumed in page loading. Can someone give some idea about it? What I try to know is: from the time user click on "submit" button until the page is fully loaded to the user, how many seconds it costs. I have ajax in the page. Is it possible to do it in js? or any other sort of way is fine too.
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Web Forms :: Update Time Variable Using Count++?
Mar 31, 2010Can anyone help with with bit of code,i get a time value and store it in a variable,i want to update the variable every second so that it looks as if the variable is displaying the current time,how can i use count++ to update the time every second.
[Code]....
[Code]....
[Code]....
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How To Update Bulk Users At One Time
May 21, 2010I have to update the users based on input value..
here is my code..
[Code]....
using this I can update only one user perfectly but I need to loo update all users based on generic Filedset values?
MVC :: Update Multiple Users At A Time?
May 21, 2010I have to update the users based on input value..
here is my code..
<fieldset>
<legend>StudnetInfo</legend>
here i have two textboxes and two dropdown list boxes.. this is the fiedlset user is going to enter their information..
</fieldset>
on the same page i have couple of other Fieldset with there studentInfo with twotextboxes and two dropdownlistboxes smililarly above Fieldset..this data dynamically generated from database for each users.
so all here my intension is insted of updating each and every Fieldset i made one generic fieldset to update all other Fieldsets information
on the Generic view I have this BeginForm
<% using (Html.BeginForm("Update", "home", FormMethod.Post,
new { @id="studentid"}))
{ %>
my JsonResult is
public JsonResult Update(StudentBE e)
{
try
{
var UStatus = Generic.UpdateStudent(e.student,"","");
return Json(UStatus.ToString());
}
catch (Exception ex)
{
return Json(ex.ToString());
}
finally
{
}
}
using this I can update only one user perfectly but I need to loo update all users based on generic Filedset values?
C# - Error When Multiple Users Access Web App At The Same Time?
Oct 5, 2010I'm using .Net 2008 and Oracle 10g as my database. The problem I'm getting is after deploying the application in IIS, when multiple users access the same page at a time i'm getting the error. Can't get the output.
Note: Both the users accessing the same page, same menu at a time.
How can I resolve this?
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View 4 RepliesArchitecture :: How To Synchronize The Data With Server
Jun 23, 2010I have the following scenario:
A server with a number of different clients on different networks. Clients will have to synchronize data with the server.
Just imagine we have a simple data table on the server. The client has the same table schema and works locally but at a certain time of the day it must upload and synchronize with the server.
Was thinking maybe in doing the following. On the client have two extra columns:
Ej:
- synchronized (Boolean, default to false)
- Time it was synchronized (date time).
- Have a wcf service on the server.
Whenever it needs to synchronize it calls the service. The service then updates data on the server. The client will wait for a response which will inform whether the synchronization took place or not. If it did it updates its local table, setting synchronized to true and the time.
Equivalent Of The Synchronize Block In Java?
Mar 30, 2011Possible Duplicate: C# version of java's synchronized keyword?
I know that when working with a session in Java, you were always supposed to surround use of the session with a synchronized block incase the user would load your page with two browsers at the same time.
Web Forms :: Multiple Users Accessing Web Service Or Web Page At Same Time
Dec 14, 2010i am still relatively new to web development and have been encountering some issues when multiple users click a button at the same time.
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SQL Server :: Multiple Users Inserting Values In The Same Table At Same Time?
Dec 15, 2010I have one SP in sql server which takes the data from user and inserts into three tables. My problem is if multiple users call the same SP in same time it throwing error..(I guess one user at a time can access the table and table will be locked, that is why remaning users getting error)how to handle this situation. it is a web application, so at a time so many people can call the same SP.How can many users insert data in the same table in the same time?
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