C#

 add following lines of code to the pre-build event command line of your project.

if exist "$(TargetPath).locked" del "$(TargetPath).locked"
if exist "$(TargetPath)" if not exist "$(TargetPath).locked" move "$(TargetPath)" "$(TargetPath).locked"

if exist "$(ProjectDir)bin\$(TargetFileName).locked" del "$(ProjectDir)bin\$(TargetFileName).locked"
if exist "$(ProjectDir)bin\$(TargetFileName)" if not exist "$(ProjectDir)bin\$(TargetFileName).locked" move "$(ProjectDir)bin\$(TargetFileName)" "$(ProjectDir)bin\$(TargetFileName).locked"

<DataGrid Grid.Row="8" Grid.Column="0" Margin="5" Grid.ColumnSpan="3" Name="dgrNumericalParameters" ItemsSource="{Binding}">
    <DataGrid.RowDetailsTemplate>
        <DataTemplate>
            <DataGrid Name="innerGrid"></DataGrid>
        </DataTemplate>
    </DataGrid.RowDetailsTemplate>
</DataGrid>

string getPage = "http://www.theWebpage.com/";
System.Diagnostics.Process.Start(getPage);

public void AddMessage()
{
     Task.Factory.StartNew<MessageResponse >(() =>
                {
                    return worker.ProcessMessage(),
                  , 
                TaskCreationOptions.None);
}

public MessageResponse GetMessage()
        {
            task.Task.Wait(15 * 1000);

            switch (task.Status)
            {
                case TaskStatus.Running:
                        message = "Your request is taking longer than usual"

                case TaskStatus.RanToCompletion:
                        message = (MessageResponse)task.Result;
                    
            }
   return message;
}

public partial class Form1 : Form
    {
        static int pbCounter = 1;

        public Form1()
        {
            InitializeComponent();
        }

        private void btnStart_Click(object sender, EventArgs e)
        {
            ProgressBar pb = new ProgressBar();
            if (pbCounter <= 10)
            {
                pb.Width = txtUrl.Width;
                flowLayoutPanel1.Controls.Add(pb);
                pbCounter++;

                System.ComponentModel.BackgroundWorker backgroundWorker1 = new System.ComponentModel.BackgroundWorker();

                backgroundWorker1.DoWork += new DoWorkEventHandler(backgroundWorker1_DoWork);
                backgroundWorker1.RunWorkerCompleted += new RunWorkerCompletedEventHandler(backgroundWorker1_RunWorkerCompleted);
                backgroundWorker1.ProgressChanged += new ProgressChangedEventHandler(backgroundWorker1_ProgressChanged);

                backgroundWorker1.RunWorkerAsync();
            }
        }

        private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {
            // Get the BackgroundWorker that raised this event.
            System.ComponentModel.BackgroundWorker worker = sender as System.ComponentModel.BackgroundWorker;

            // Assign the result of the computation
            // to the Result property of the DoWorkEventArgs
            // object. This is will be available to the  
            // RunWorkerCompleted eventhandler.
            //#e.Result = ComputeFibonacci((int)e.Argument, worker, e);
        }

        // This event handler deals with the results of the
        // background operation.
        private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            // First, handle the case where an exception was thrown.
            if (e.Error != null)
            {
                MessageBox.Show(e.Error.Message);
            }
            else if (e.Cancelled)
            {
                //# "Canceled";
            }
            else
            {
                pbCounter--;
                // Finally, handle the case where the operation  
                // succeeded.
                //#resultLabel.Text = e.Result.ToString();
            }
        }

        // This event handler updates the progress bar.
        private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
        {
            this.progressBar1.Value = e.ProgressPercentage;
        }

    }