backgroundworker

问题 Recently i have upgraded my project to 26 Api level. after that alarm manager is not working for me. I don't know what's the problem but i guess the alarm is not at all working, whenever app is in background for all device above lolipop(>=M). i have gone through other questions and and have followed some suggestion like 'WakefulBroadcastReceiver', Below is my code and flow of the same Scenario - setting a repeative alarm for every 15 minutes. Intent dil = new Intent(getApplicationContext(),

问题 I have many methods (they only run one at a time though), they all use the same RunWorkerCompleated and ProgressChanged methods but they all have different Dowork methods. Is it safe to do the following: private void button_Process_Click(object sender, EventArgs e) { bgWork_Process.DoWork += Scrub_DoWork; bgWork_Process.RunWorkerAsync(); bgWork_Process.DoWork -= Scrub_DoWork; } or can I hit a edge case doing this? I did not see anything on the MSDN on it saying it was not allowed and it as

问题 This should be a fairly simple thing; however, I've been unable to figure this out. /// This section is located in the InitializeComponent() method /// form's class, i.e. partial class frmMain { .... } this.bgw = new System.ComponentModel.BackgroundWorker(); this.bgw.WorkerReportsProgress = true; this.bgw.DoWork += new System.ComponentModel.DoWorkEventHandler(this.bgw_DoWork); this.bgw.ProgressChanged += new System.ComponentModel.ProgressChangedEventHandler(this.bgw_ProgressChanged); /// This

问题 Is there any background worker in android! I used progress dialog in this but no resolve for this suggested. I need to show a wait dialog and after my process end, do other process. I used AsyncTask suggested in this topic but my progress dialog not show immediately yet !! 回答1: Try this: class myAsyncTask extends AsyncTask<Void, Void, Void> { Context context; myAsyncTask(Context context) { this.context=context; } @Override protected void onPostExecute(Void result) { super.onPostExecute(result

问题 I'm having a really weird issue with a background worker in one of my applications. I recently overhauled it slightly with some GUI fixes but now when someone on another PC runs the .exe or installs my OneClick deployment the background worker doesn't enter the dowork event. The logic has not changed between the 2 releases. I've done a compare and besides adding more error logging nothing has changed. I've gone as far as to include message boxes and breakpoints in the dowork event but it

问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: BackgroundWorker vs background Thread When should I consider managing threads on my own as opposed to using the BackgroundWorker? I know managing threads on your own can be difficult and can lead to problems, is there a direct benefit of managing them on your own? 回答1: You will find an answer to this question at: BackgroundWorker vs background Thread 来源： https://stackoverflow.com/questions/5195733/when-to-use

问题 I am one of those accidental programmer so I don't have that much knowledge regarding programming best practice. I have an application that currently uses 4 Background Worker. So I declare them: private BackgroundWorker bw1; private BackgroundWorker bw2; private BackgroundWorker bw3; private BackgroundWorker bw4; Then configure them: bw1 = new BackgroundWorker(); bw1.WorkerReportsProgress = true; bw1.DoWork += new DoWorkEventHandler(bw1_DoWork); bw1.RunWorkerCompleted += new

问题 I'm quite new to WPF. I am developing a PRISM application and want to update the UI when an enumerable is updated. I use a backgroundWorker in my modelView to update the enumaration. it all works fine until the enumeration it self gets updated and then the UI freezes!! a friend told my I might be able to use the yield keyword but I didn't quite figured it out. Here is the code: public void ChangeCollection() { BackgroundWorker worker = new BackgroundWorker(); // Set workers job worker.DoWork

问题 No exception is thrown, function just halts at this statement: int productQuantity = Convert.ToInt32("1.00"); and returns. What am I doing wrong to convert this float to Int32 ? Note: I am running in a BackgroundWorkerThread . 回答1: An exception is being thrown in this case it's just not being surfaced in the debugger. This string is not in a format that is convertible to an Int32 type and hence throws and exception. You can verify this by wrapping it in a try/catch block if the IDE isn't

问题 I am trying to keep my indeterminate ProgressBar animation running smoothly as I query database and updating DataGrid in DoWork in BackgroundWorker . I understand that I cannot update UIThread in DoWork , so I use Dispatcher.BeginInvoke to access DataGrid , yet I still receive the owned-by-another-thread exception. Question 1 Why is this happening? DoWork should be on BackgroundWorker's thread owned by UIThread, and Dispatcher should allow my DoWork to access my GUI. Looking further into