backgroundworker

File Copy with Progress Bar

由 老子叫甜甜 提交于 2019-11-27 00:26:58
I used this code: using System; using System.Collections.Generic; using System.ComponentModel; using System.Windows.Forms; using System.IO; namespace WindowsApplication1 { public partial class Form1 : Form { // Class to report progress private class UIProgress { public UIProgress(string name_, long bytes_, long maxbytes_) { name = name_; bytes = bytes_; maxbytes = maxbytes_; } public string name; public long bytes; public long maxbytes; } // Class to report exception { private class UIError { public UIError(Exception ex, string path_) { msg = ex.Message; path = path_; result = DialogResult

Multithreading for a progressbar and code locations (vb.net)?

由 纵饮孤独 提交于 2019-11-26 23:37:06
问题 I am stuck updating a progressbar from a different thread. I did get it running in the simplest way, but then cleaning the code gets me stuck. My testing code looks like all the examples on the web related to backgroundworker and BeginInvoke. FormP is the Progressbar-Form. This works: Public Class Form1 Private Delegate Sub delegate_ProgressUpdate(ByVal paramValue As Integer, ByVal paramMax As Integer) Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1

BackgroundWorkers never stop being busy

由 自闭症网瘾萝莉.ら 提交于 2019-11-26 23:23:42
问题 for (do it a bunch of times) { while (backgroundWorker1.IsBusy && backgroundWorker2.IsBusy && backgroundWorker3.IsBusy && backgroundWorker4.IsBusy && backgroundWorker5.IsBusy) { System.Threading.Thread.Sleep(0001); } if (!backgroundWorker1.IsBusy) { backgroundWorker1.RunWorkerAsync(); } else if (!backgroundWorker2.IsBusy) { backgroundWorker2.RunWorkerAsync(); } else if (!backgroundWorker3.IsBusy) { backgroundWorker3.RunWorkerAsync(); } else if (!backgroundWorker4.IsBusy) { backgroundWorker4

Pause/Resume loop in Background worker

由 旧巷老猫 提交于 2019-11-26 23:10:51
问题 I have a loop in Background worker in a Winform Application. I Just used this Code but it won't resume after the Pause. In the main Class I use this System.Threading.ManualResetEvent _busy = new System.Threading.ManualResetEvent(false); Then in My Start Click I wrote this: if (!backgroundWorker1.IsBusy) { MessageBox.Show("Not Busy"); //Just For Debugg _busy.Set(); Start_Back.Text = "Pause"; backgroundWorker1.RunWorkerAsync(tempCicle); } else { _busy.Reset(); Start_Back.Text = "Resume"; }

report progress backgroundworker from different class c#

由 五迷三道 提交于 2019-11-26 22:56:07
问题 In my .NET C# project I have used a "BackgroundWorker" to call a method in a different class. The following is the source-code of my main form public partial class Form1 : Form { public Form1() { InitializeComponent(); } testClass t1 = new testClass(); private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e) { t1.changevalue(1000); } private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e) { label1.Text += Convert.ToString(e.ProgressPercentage);

Running a method in BackGroundWorker and Showing ProgressBar

由 十年热恋 提交于 2019-11-26 22:54:48
What I want is when some method is doing some task UI keeps itself active and I want to show the progress of the work in a progress-bar. I have a method, a BackGroundWorker and a Progressbar . I want to call the method when BackGroundWorker starts running and show the progress. The method contains a loop. So, it can report the progress. So, what can be done? private void Form1_Load(object sender, EventArgs e) { // TODO: This line of code loads data into the 'dataSet1.TBLMARKET' table. You can move, or remove it, as needed. myBGWorker.WorkerReportsProgress = true; } private void myBGWorker

VB.NET progressbar backgroundworker

由 偶尔善良 提交于 2019-11-26 22:54:45
When my application starts, and it has just been upgraded, I am doing a local database update (sqlite). It is like that: The user starts my app, and then I start the upgrade process. During this upgrade process I am showing a form that has a continuous progressbar. This form closes when the upgrade process is done and the user can then start using my application. But the progressbar won't animate since the upgrade process is so intensive. In my old VB6 version I used an ActiveX-Exe that has 1 form and shows a progressbar. This was my "background worker". I am not sure if I can use the same

C# Winform ProgressBar and BackgroundWorker

由 雨燕双飞 提交于 2019-11-26 22:15:14
问题 I have the following problem: I have a Form named MainForm. I have a long operation to be taken place on this form. While this long operation is going on, I need to show another from named ProgressForm on top of the MainForm. ProgressForm contains a progress bar which needs to be updated while the long operation is taking place. After the long operation is completed, the ProgressForm should be closed automatically. I have written the following code: using System; using System.Collections

Background Worker Check For When It's Midnight?

由 让人想犯罪 __ 提交于 2019-11-26 21:38:12
问题 I want to create a background worker for a WinForm that triggers code whenever midnight rolls by. I have an idea of how to do it, but I'm pretty sure it's not the best way to do it. while(1==1) { //if Datetime.Now == midnight, execute code //sleep(1second) } 回答1: Use a System.Timers.Timer and at application start up just calculate the difference between DateTime.Now and DateTime.Today.AddDays(0) . Then set the interval for that amount. I actually did something just like this recently: public

Spawn Multiple Threads for work then wait until all finished

由 允我心安 提交于 2019-11-26 21:15:51
just want some advice on "best practice" regarding multi-threading tasks. as an example, we have a C# application that upon startup reads data from various "type" table in our database and stores the information in a collection which we pass around the application. this prevents us from hitting the database each time this information is required. at the moment the application is reading data from 10 tables synchronously. i would really like to have the application read from each table in a different thread all running in parallel. the application would wait for all the threads to complete
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