How to display a message box in every 1 minute in c# windows application

private void button1_Click(object sender, EventArgs e)
      {
          while (true)
          {
              System.Threading.Thread.Sleep(60 * 1000);
              MessageBox.Show("Hello!");
          }
      }

private void button1_Click(object sender, EventArgs e)
     {
         while (true)
         {
             System.Threading.Thread showSeperate = new System.Threading.Thread(new System.Threading.ThreadStart(Show_Message));
             System.Threading.Thread.Sleep(60 * 1000);
             showSeperate.Start();
         }
     }
     void Show_Message()
     {
         MessageBox.Show("Hello!");
     }