Suspension (not completing the Task) from another panel

[zymir]

Is there any way to make the caps (unfinished) due from another car?

for (int i = 0; i < count; i++)
           {
               await Task.Run(() => FullReg());
               await Task.Delay(5000);
               if (checkBox1.Checked)
               {
                   if (i % proxyswitch == 0 && i != 0)
                   {
                       //Task.WaitAll(); -- ТУТ ДОЛЖНА БЫТЬ ПРИОСТАНОВКА ВСЕХ ТАСКОВ
                       System.Diagnostics.Process.Start(@"C:\Program Files (x86)\HMA! Pro VPN\bin\HMA! Pro VPN.exe", "-changeip");
                       await Task.Delay(10000);
                   }
               }
           }
           while(int.Parse(CountFailedAccLabel.Text) + int.Parse(CountFailedAccLabel.Text) != count)
           {
               await Task.Delay(proxyswitch*5000);
               await Task.Run(() => ChangeIPHMAButton_Click(sender, e));
               await Task.Delay(10000);
               //System.Diagnostics.Process.Start(@"C:\Program Files (x86)\HMA! Pro VPN\bin\HMA! Pro VPN.exe", "-changeip");
           }

[Kadyn]

You can't stop another code just like that. This code should cooperate. For example, you can raise a flag that has to be checked in parallel to the running code, or set up a common object that your parallel code has to try to lane off from time to time.