how to run 2 ProgressBar on Same Time in C# Windows Froms Application

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C#

hi guyz,

i have write a code to run two progress bar at same time, but when i run the program the progressBar1 starts and ends by displaying the messageBox"Thread Complete", and then the second progressBar2 starts. i just wanted to know that the both progressBar1 and progressBar2 starts on the same time..

private void btnStart_Click(object sender, EventArgs e)
       {
           if (isProcessRunning)
           {
               MessageBox.Show("A process is already running.");
               return;
           }
           Thread backgroundThread = new Thread(
               new ThreadStart(() =>
               {
                   isProcessRunning = true;
                     //progressBar1 Starts here
                   for (int n = 0; n < 100; n++)
                   {
                       Thread.Sleep(50);
                       progressBar1.BeginInvoke(new Action(() => progressBar1.Value = n));
                   }
                   MessageBox.Show("Thread completed!");
                   if (progressBar1.InvokeRequired)
                       progressBar1.BeginInvoke(new Action(() => progressBar1.Value = 0));
                     //progressBar1 Starts here
                   for (int m = 0; m < 100; m++)
                   {
                       Thread.Sleep(50);
                       progressBar2.BeginInvoke(new Action(() => progressBar2.Value = m));
                   }
                   MessageBox.Show("Thread completed!");
                   if (progressBar2.InvokeRequired)
                       progressBar2.BeginInvoke(new Action(() => progressBar2.Value = 0));
                   isProcessRunning = false;
               }
           ));
           backgroundThread.Start();
       }