C # BackgroundWorker Implementation of the form does not die the progress bar function

The online example is a lot less configuration of the properties, changed to a direct use of:

1 usingSystem;2 usingSystem.Collections.Generic;3 usingSystem.ComponentModel;4 usingSystem.Data;5 usingSystem.Drawing;6 usingSystem.Linq;7 usingSystem.Text;8 usingSystem.Windows.Forms;9 Ten namespaceXXXX One { A      Public Partial classBackgroundworker:form -     { -          PublicBackgroundWorker () the         { - InitializeComponent (); -Backgroundworker1.workerreportsprogress =true; -Backgroundworker1.workersupportscancellation =true; +Backgroundworker1.progresschanged + =NewProgresschangedeventhandler (backgroundworker1_progresschanged); -backgroundworker1.runworkercompleted + =NewRunworkercompletedeventhandler (backgroundworker1_runworkercompleted); +Backgroundworker1.dowork + =NewDoworkeventhandler (backgroundworker1_dowork); AProgressbar1.maximum =10000; at         } -  -         //This is where the display of the interface is handled by the response message . -         Private voidBackgroundworker1_progresschanged (Objectsender, ProgressChangedEventArgs e) -         { -              This. progressBar1.Value =E.progresspercentage; in              This. Label1. Text =e.userstate.tostring (); -              This. Label1. Update (); to         } +  -         //here is the background work after the completion of the message processing, you can do the following processing work.  the         Private voidBackgroundworker1_runworkercompleted (Objectsender, Runworkercompletedeventargs e) *         { $MessageBox.Show ("The operation was finally completed.");Panax Notoginseng         } -  the         //here is where the work function is called when the background process starts to work. You can write your existing processing functions here.  +         Private voidBackgroundworker1_dowork (Objectsender, DoWorkEventArgs e) A         { theWork This. BackgroundWorker1); +         } -  $         //the real deal work $         Private BOOLWork (BackgroundWorker BK) -         { -             intTatle =10001; the  -              for(inti =0; i < Tatle; i++)Wuyi             { the                 if(BK.) cancellationpending)//here to determine whether the user requested to cancel the background, and can exit early.  -                 { WuBk. ReportProgress (i, String.Format ("Current value is {0}, operation interrupted by user request", i)); -                     return false; About                 } $  -                 //Process , through this function, the main thread to report processing progress, preferably converted to a percentage, and the outside of the progress bar must correspond to the maximum value. Here, instead of translating, I have adjusted the maximum progress bar of the interface thread to match the total number here.  -Bk. ReportProgress (i, String.Format ("the current value is {0}", i)); -             } A             return true; +         } the  -         Private voidButton2_Click (Objectsender, EventArgs e) $         { the             //when the user requests cancellation, this is done. Sometimes it's not very good.  the              This. Backgroundworker1.cancelasync (); the         } the  -         Private voidButton1_Click (Objectsender, EventArgs e) in         { the             if( This. Backgroundworker1.isbusy) the                 return; About              This. Backgroundworker1.runworkerasync (); the         } the  the         Private voidButton3_Click (Objectsender, EventArgs e) +         { -              This. Close (); the         }Bayi     } the}

A few controls on the form can be

C # BackgroundWorker Implementation of the form does not die the progress bar function