c# - Waiting for either of these BackgroundWorker to complete -


There is a sequence for the farm (some UI) should download using the service Currently, this download is in the background worker thread is. Now, since the performance is slow ... we decided to form categories in 2 and started parallel by using another background player on the current thread.

Now, the scenario should be either of this backgroundworker to wait for others to complete, then how to implement it.

I tried with an AutoSetset

I do not think that the scenario actually Is that a backgroundworker should wait for another. Do you really want to complete completely after some UI event (and after) This is a subtle but important difference; The second version is very easy to code. 

  Public category Form 1: Form {Private object download 1 result; Private Object Downloads 2 Results; Private Zero BeginDownload () {// The next two rows are only required if it is downloaded multiple times 1 Result = Faucet; Download 2 results = Faucet; BwDownload1.RunWorkerAsync (); BwDownload2.RunWorkerAsync (); } Private Zero contains bwDownload1_RunWorker (Object Sender, RunWorkerCompletedEventArgs e) {download1Result = e.Result; If (download2Result! = Null) DisplayResults (); } Private Zero Download BW 2_Respondent Complete (Object Sender, Runwalker Comprehensive Avant-erg E) {download2Result = e.Result; If (download 1 result! = Tap) displayResults (); } Do something with Private Zero DisplayResults () {// Download1Result and download2Result}}

Note that those objects references should be typed strongly, I just do object because I do not know what you're downloading.

It really needs you; The forwarding thread runs the Runawalker Composite event, so you do not really need to worry about synchronization or running conditions. There is no need for lock statements, AutoResetEvent , etc., use two member variables for the result, or two boolean flags if the result is actually Null .


Comments

Post a Comment

Popular posts from this blog

sql - dynamically varied number of conditions in the 'where' statement using LINQ -

I am using my first project LINQ (in mvc), so maybe there's something very simple that I remember. However, a day of searching and experimenting does not work, so it works. I am trying to write a LINQ query (Linux to SQL) in which in many cases where the statement is different from an OR or an AND. We do not know how many conditions are going in the query till runtime. This search is for filter control, where the user can choose multiple criteria for filtering. Select from table where table.col = 1 or table.col = 2 or table.col = 7 .... 'Other number of conditions Before I just create the SQL query as a string, while looping over all the situations. However, it seems that there should be a good way to do this in LINQ. I tried to use Expression trees, but they had a second thought for this moment on my head, where the lambda function was to be executed inside the statement such as: values ​​for matchingRows = matchingRows for each value Where (function (row) row.c...
Read more

asp.net mvc - Dynamically Generated Ajax.BeginForm -

I have a problem with ASP.NET MVC Ajax forms. I generate many Ajax form in a table such as: & Lt; Input type = "submit" name = "activity" value = "add activity" / & gt; & Lt;%}% & gt; & Lt; / TD & gt; & Lt; / TR & gt; & Lt;%}% & gt; So far so good. When I post one of those forms, it gives a partial view in a div, and in this new partial view a new Ajax Beginnform (which is not in Genesis form) This second Ajax Beginnorf is exactly like the ones I got on the table, but when I post it, I do not get the "Ajax Post", but a normal post that sends me to a new page, I do not know whether the two Ajax forms What is the reason for the difference between, why is it the "dynamically generated" Ajax form behaves like a normal HTML form? By the way, I know that I can do it in different ways using javascript, but I would like to understand whether it can only be done using MVC helplars and Ajax lib...
Read more

Debug on symbian -

I am using trk for phone debug This works well for the Holorld project But when I start the project in phone debug mode 1) the load failed 2) TrkProtocolPlugin: to target the specified file Failure (please verify If any body understands what problem I am experiencing, then this problem helps me Pre-release If the application has the privileges assigned (with the appropriate certificate) itemprop = "text" > In your case, I will check: / li> If there is no conflict of application ID with any other application of device If there are problematic commands in the installation package (for example copy copy for non-accessible directories)
Read more