Multithreading In Dotnet Apps?
Sep 30, 2010Multithreading in dotnet apps?
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View 8 RepliesVb.net - .net Multithreading With Synclock?
Jan 31, 2011i have some test code which i run at every load of a page in my asp.net website
this is the code
Sub TryThreads()
Dim t1 = New Thread(AddressOf TryLock)
t1.Priority = ThreadPriority.Lowest[code]...
the "dotrace" simply add a record to a log table in the db.now the right result would be that i should have the entries in the db in order "entered","exiting","exited"but actually when i look in the db i see first 2 "entered" then 2 "exiting" etc.meaning that the multithreading is working ok, but not the synclock is that correct?the real code will be adding records to the db and might be called from several pages of different sessions, but the same code must not run twice concurrently.
EDIT:in response to Sashas wonderful post i changed my code to a class (it was in a module) and now it looks like this:
Public Class CheckClass
Property LockObject As Object
Get [code]...
if i open multiple pages at once, they still clash some times. but if i'm correct, the issue is now not with the synclock as much as with the httpruntime.cache, because when using a standard property, on one page, the code works 100%. so how can i make sure that 2 threads, even from totally different sessions never run the trylock simultaneously?
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Feb 3, 2010I'm working on my project, I want to ask is it possible to create multithreading in the web method at the web server side instead, not the client side.
View 3 RepliesMultithreading Accepts Value And Return Value?
Dec 18, 2010I wrote the following code to return a pdf report. The code is based on a multi-threading sample code. Can you guys provide some feedback about it, I am new to mulit-thread.
public delegate void StreamResultDelegate(Stream streamResults);
public class GenerateReport
{[code].....
Multithreading - Want To Create A Thread In A Mvc Application?
Nov 5, 2010I want to create a thread in a asp.net mvc application. What will happen?
A) Thread will die when request ends and the response is sent.
B) Thread will continue to run and response will be sent when thread terminates.
C) Thread will run without blocking the response and die when it have completed it's task
Web Forms :: Implement Multithreading Into The Web Application?
Aug 27, 2010i want to impliment multithreading into my web application how to do that..
i have already knew the concept of multithreading but want to impliment into application..
i have developped an application this application runs correctly for 400 users but when more user hits the server than the application fails to respond...
how improve the performance of the application..is this problem is related to the database server of the application server.
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I would like to learn in detail about how a request is processed in ASP.NET - from the point it is received in http.sys all the way up to it being processed in ASP.NET itself. I've found the MSDN documentation on http.sys and IIS a little lacking, but perhaps my google-fu is weak today. So far, the best resource I have found is a post on Thomas Marquardt's Blog.
Could anyone shed more light on the topic, or point me to any other resources?
Multithreading - .net ThreadPool - Long Running Operation.
Jan 27, 2010My application is a asp.net 3.5 running on iis 6 (windows 2003)
This application is serving 1000's of users daily (100-500 users online).
I want to send an email newsletter to customers weekly.
Around 200,000 emails every time.
This is the code im using:
ThreadPool.QueueUserWorkItem(new WaitCallback(AsyncProcessMailerQueue), null);
private static void AsyncProcessMailerQueue(object data)[code]....
When testing this locally (on my dev machine) i see the application is working alot slower.
Is there a better way to write this code? Should i use ThreadPool.QueueUserWorkItem or create a new thread using Thread t = new Thread(new ThreadStart(DoWork)); ? Will it be better to create a totally seperate application for the purpose of sending the newsletters. will that help if ill run this application on the same machine?
i've seen other posts here talking about ThreadPool vs Thread but its seem no one is sure which is better.
Use AJAX Or Multithreading To Speed Up Page Load?
Jan 30, 2011I have a page that has 5 sections. Each section takes about 1 second to render.
Page_Load()
{
RenderSection1(); //1 sec
RenderSection2(); //1 sec
RenderSection3(); //1 sec
RenderSection4(); //1 sec
RenderSection5(); //1 sec
}
I would like to speed up the loading of this page. But at the same time make sure that it don't slow down performance of other parts of web application and also do not crash the IIS.
The are several approaches:
Use AJAX requests. Needs to be MVC style requests to Controller or Web Service. Using UpdatePanel around each section will not work - since if I try to submit refreshes to multiple UpdatePanels at the same time using approach here: [URL], the last request will always win: [URL] Use ASP.NET threads described in answer to right way to create thread in ASP.NET web application. So I would use a separate thread for each call: RenderSection1, RenderSection2, etc... Move the logic that takes up time, usually DB requests, into Application Service class in another DLL or External Web Service. Something like
OrderDTO GetDataForViewOrder(int orderID)
{
}
and use multiple threads in that DLL. This approach seems to provide the best scalability, but also introduces UI details into Application Services layer.
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I have small idea that there should be the following layers.
user interface
customer types (custom entities)
business logic layer
data access layer
My purpose is sure quality of work and maximum re-usability of code.
some one suggested to add common types layer in it. Please guide me what should be layers ? and in each layer what part should go ?
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View 2 RepliesWeb Forms :: Upload Large Excel File - Use Multithreading?
Mar 7, 2011i have a large excel file which has 1 lakh row , i want to insert these data in my table i am using entity framework for insert but it takes more than 45 minutes to insert which is too much, i want to speed up the uploading process what should i do. can I use multithreading for it if yes then how i can use? if any other way to do this process.
View 1 RepliesMultithreading - Page Running On IIS Make Use Of Multicore Processors?
Jul 8, 2010I've got an ASP.net page that runs a script which takes anywhere between 1 second and 10 minutes to run dependant on the parameters passed in to it. My question is, if the server is multicore, will this script automatically make use of all the processors, or is it constricted to one.
View 3 RepliesC# - Recursive Function MultiThreading To Perform One Task At Time?
Jun 14, 2010I am writing a program to crawl the websites. The crawl function is a recursive one and may consume more time to complete, So I used Multi Threading to perform the crawl for multiple websites. What exactly I need is, after completion crawling one website it call next one (which should be in Queqe) instead multiple websites crawling at a time.I am using C# and ASP.NET.
View 4 RepliesCreate Web Chat With Dotnet Framework 3.5
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View 7 RepliesConvert Linq Code To Dotnet 2.0?
Mar 17, 2011string pdfpath = Server.MapPath("images");
string imagepath = Server.MapPath("Images");
using (Stream inputPdfStream = new FileStream(pdfpath + "\NLI_Filled_out.pdf", FileMode.Open, FileAccess.Read, FileShare.Read))
using (Stream inputImageStream = new FileStream(imagepath + "\sign2.gif", FileMode.Open, FileAccess.Read, FileShare.Read))
using (Stream outputPdfStream = new FileStream(pdfpath + "\NLI_Filled_output.pdf", FileMode.Create, FileAccess.Write, FileShare.None))
{
var reader = new PdfReader(inputPdfStream);
var stamper = new PdfStamper(reader, outputPdfStream);
var pdfContentByte = stamper.GetOverContent(3);
iTextSharp.text.Image image = iTextSharp.text.Image.GetInstance(inputImageStream);
image.ScalePercent(24f);
image.SetAbsolutePosition(100, 130);
pdfContentByte.AddImage(image);
stamper.Close();
}
I have the above code in 3.5 using linq..i want to convert it into dotnet 2.0..
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View 2 RepliesMultithreading - When Serve A Webpage -, Can Render The Various Controls On The Page In Parallel
Aug 10, 2010When I serve an ASP.NET page, can I render the various controls on the page in parallel?
I have a few Telerik controls (RadGrids) on the page and when I step through the page being loaded, it seems as though the controls are databound and rendered serially.
Maybe this behavior is because I am hooked in with the debugger.
Is there anyway to load the page and have select controls build on separate threads? Is that even conceptually possible or must it be done sequentially?
State Management :: Session Lost When Multithreading Though ( There Is A Wait Call ! )?
Mar 9, 2011I am creating a multithreading application and I am using countdownevent to signal my object arround 3 times and using wait , but somehow the session goes null , although I am setting a breakpoint after mycountdownevent.wait() and the breakpoint isnt reached , that means the execution is not done...so can someone tell me what is wrong?? here is my code :
this is the main thread
[Code]....
this is the upload image method :
[Code]....
and this is a property for the countdown event :
public
CountdownEvent
_3adasehCountDownEvent;
Can Different Versions Of Dotnet Framework Co - Exist In Same Machine
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View 7 RepliesArchitecture :: What Is Component Based Development In Dotnet
Feb 19, 20101. Can you explain me what is component based development ? What I am already doing is using layers (user interface, custom types, data access layer and busines logic layer). For example for filling a drop down list with countries what I do is getting data from DAL using custom types in my BLL and BLL return a list of countries to user interface. Now in my opinion it is a plug-able component that I can use anywhere. Should it be called a component ?
2. What is a component a method ? or class or a assambly ?
3. Can components be like that (methods and assemblies) or they are services to embed ?
4. Actually I never have used services, if component can be in both ways (services & classes and assemblies) than what approach is better, should component be made in form of assemblies or services ?
5. Without being so technical any general rules on making re-usable components ?