C# - Is It Sane To Use Thread.Sleep (int) In .NET Or Should I Use Another Method
Mar 16, 2011
I want to introduce a slight wait during some testing functions, to simulate a server call. Is it sane to use Thread.Sleep(int) to introduce the wait or is there a better method to have the server wait?
Note, I'll be pausing long enough for me to visually see a sufficient lag, even tho I don't expect to see such a delay in the actual app. This is for me to visualize the actual delay that could occur.
I plan on running this both in the VS2010 local debugger webserver and in IIS 7. I'm on .NET 3.5
I want a example of multithreading .i want to use it in a web form not on console.i am using C#.net .and how to use thread.sleep method for a particular thread.
lock (this) { if (!isGoodPassword) Thread.Sleep(2000); } I would expect that this would allow all correct passwords without stalling, but if one user enters a bad password another successful password from a different user would also be blocked. However, the lock doesn't seem to lock across ASP.NET threads.
While passing through code in our project I came across a web method that had this code at the end of it:
thread.sleep(6000); return true;
Now, this was done so the jQuery ajax call from the client gets delayed and the ajax animation will show for a little bit longer. This is very wrong in my eyes. There shouldn't be this kind of connection between UI and server side. If he wants the animation to take longer he can use the setTimeOut function in the client side. Here is my problem: how can I explain to the programmer why this is so wrong? Not just because the client/server thing, but why ever call thread.sleep on a website?
I maintain a ASP.NET web application that causes a user's network connection to reset for several seconds when it executes a procedure. Therefore, the page request times out on the user's end as they never receive the web application's response (the connection dies before it gets the response packet).
To resolve this situation, I was contemplating having the ASP.NET page execute an asynchronous function that incorporates a Thread.Sleep(5000); // sleep for 5 seconds before executing the connection reset This way, the browser has 5 seconds to receive the page's response before their connection resets.
I have concerns with using Thread.Sleep and asynchronous functions in ASP.NET though. I've never attempted to do it before, so I'm unsure of the potential problems it may cause. Does anyone see potential problems with starting an asynchronous thread that contains a Thread.Sleep in an ASP.NET application?
I create a NetworkStream from a TCPClient, I then call BeginRead() followed by Thread.Sleep(60000).
It seems that the BeginRead call back function will only ever occur after Thread.Sleep() has completed. Is this expected behaviour?
What I was expecting was for the call back function to be carried out on a separate thread whenever it was ready and that the Thread.Sleep() on the current thread should have no affect on when/how the call back function runs...
I'm currently creating a VT100 terminal emulator, I wanted to created a method that would allow me to make the emulator sleep until a given string is found in the screen buffer. Initially I was trying to call WaitOne() on the IAsyncResult passed back from BeginRead() if the string was missing (this was to allow more data to pass into the system so that the check could then be carried out again until it was passed), after this failed I tried Thread.Sleep instead of WaitOne() but this blocked my BeginRead call back from firing and I'm now I'm starting to think everything is running from a single thread...
I want to remove checked items from checklistbox (winform control) in class file method which i am calling asynchronously using deletegate. but it showing me this error message:-
Cross-thread operation not valid: Control 'checkedListBox1' accessed from a thread other than the thread it was created on.
i have tried invoke required but again got the same error. Sample code is below:
I'm developing an ASP.NET forms webapplication using C#. I have a method which creates a new Order for a customer. It looks similar to this; private string CreateOrder(string userName) { // Fetch current order Order order = FetchOrder(userName);[code]....
The problem here is, it is possible that 1 customer in two requests (threads) could cause this method to be called twice while another thread is also inside this method. This can cause two orders to be created.
How can I properly lock this method, so it can only be executed by one thread at a time per customer?
Assuming a static method like below is called from ASP.NET page,can a different thread(b) overwrite the value of s1 after the first line is executed by thread(a)?If so, can assigning parameters to local variables before manipulation solve this?
I'm new to threading and have used it successfully, but limited. I can spawn a thread and have the main thread reference variables in the spawned thread, but I don't know how to allow the spawned thread to reference (and update) variables in the main thread.
Any example threading code I've seen on the web appears to be WAY more complicated than what I do, so I am unable to understand or integrate into my code.
I am creating an Asp.net web site which will support dynamic data. When I am creating a dynamic web site from Scratch (from template in VS) all is working fine. But when I am trying to add dynamic entity (.edmx) file and running the application I am getting following error
"The method 'Skip' is only supported for sorted input in LINQ to Entities. The method 'OrderBy' must be called before the method 'Skip'. "
I need an explanation regarding some advice I got on this site. I'm doing a newsletter sending app, and I have my mail sent in a seperate thread so the process doesn't slow down the whole web site. A couple of people advised me to set the threads IsBackground property to true. I did this, but was also courious about what this does, so I googled a bit.
As it turns out, setting the IsBackground property to true indicates that "it's okay if the process shuts down while this thread is still running.". Or as microsoft puts it "Any remaining background threads are stopped and do not complete." I don't know if I got this the wrong way but, wouldn't it be better to leave the IsBackground property to false, so that the spawned thread can complete its work regarding the main thread?
I want to execute a process, but after the process is done i would like to execute a query so i know this process is done.The process called ffmpeg is quite big so i start it and wait til its done with this coding:
So basically here I am trying to wait for my server to connect to my website signaling it that its done and so the page needs to be refreshed(cause sql was updated). Thing is when I try to use the response/request in the thread it simply doesn't want to work.
Here the code
Code:
[code]....
Errors I am getting are:
1. If I have the headers clear thing there it gives requires integrated IIS pipes or something like that. 2.If I don't have the clear headers it says the headers were already sent.
Can we consider that two clients accessing the same method of a web service at the same time are two threads (with all problems involved...) ?Is it the same thing for methods in an asp.net web application ?
I am executing time consuming task in a new thread. ParameterizedThreadStart pts = new ParameterizedThreadStart(WorkingFoo); Thread thread = new Thread(pts);
The WorkingFoo executing the task and keeps track of the progress steps (it can return the total number of "steps" and the current step).
I want to display this information in a progress bar (simple div or ajax control, I don't mind).
I don't want, ofcourse, visually refresh the page that will display the progress. Also I want to reduce as much as possible the number of postbacks. So how do I do that? How to show the current progress from new thread on the web page? Also the page that shows the progress can be closed and re-opned and still get the current status.
I have a thread that runs querying a DB and returning some values. If this values satisfyes a condition, I want to raise a message box (javascript alert) for the client side.
In my system, users can post some tasks in DB, and the thread is going to constantly query the database to check if user has things to do. If user has, the system must alert him through a message box.
I've done javascripts invokings with ClientScript.RegisterStartupScript, and Attributes.Add for buttons. But now I want to call the javascript functions (wich will alert the user that he has things to do) from the midle of a sub (that is executed in a thread), without a submit, load or click event. How can I do it?
I have a WCF service method that's running in a worker thread I spin from another method. I need to map a relative service app path ("~/Templates/a.template") to the physical path ("D:WebTemplatesa.template"), but I can't use HttpContext.Current.Server.MapPath because HttpContext.Current is null in a worker thread. How else can I reach MapPath method?
