I am pasting a code which i have made in VS...al is fine bt cancelasync method of background worker is not working..so please help me out what is missing.
Code:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace AsyncDemo
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
backgroundWorker1.WorkerReportsProgress = true;
backgroundWorker1.WorkerSupportsCancellation = true;
backgroundWorker1.DoWork += new DoWorkEventHandler(bw_DoWork);
backgroundWorker1.ProgressChanged += new ProgressChangedEventHandler(bw_ProgressChanged);
backgroundWorker1.RunWorkerCompleted+=new RunWorkerCompletedEventHandler(bw_cmplt);
}
private void bw_cmplt(object sender, RunWorkerCompletedEventArgs e)
{
if (e.Cancelled)
MessageBox.Show("Task Cancelled");
else if (e.Error != null)
MessageBox.Show("Some Error Occured");
else
MessageBox.Show("Task Completed");
}
private void bw_DoWork(object sender, DoWorkEventArgs e)
{
if (backgroundWorker1.CancellationPending)
{
e.Cancel = true;
}
else
{
for (int i = 0; i < 100; i++)
{
backgroundWorker1.ReportProgress(i);
Thread.Sleep(50);
}
}
}
private void bw_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
progressBar1.Value = e.ProgressPercentage;
}
private void button1_Click(object sender, EventArgs e)
{
backgroundWorker1.RunWorkerAsync();
}
private void button2_Click(object sender, EventArgs e)
{
backgroundWorker1.CancelAsync();
}
}
}