C# in Async Task change Label Text

Question

The following Code does not change the Text and stops executing the Task

private void button1_Click(object sender, EventArgs e)
    {
        label1.Text = \         


        

Answer 1

for accessing a GUI control through a second thread you need to invoke. following example shows how to set a label's text properly

  private void setLabel1TextSafe(string txt)
  { 
       if(label1.InvokeRequired)
           label1.Invoke(new Action(() => label1.Text = txt));
       else
           label1.Text = txt;
  }

I hope this solves your problem