How to use the progress bar in a windows form?
 Drag down a progress bar, a  button and a timer. Now click on the button and write the code:
  
 private void btnprogress_Click(object sender, EventArgs e) 
 {
     this.timer1.start();
 } 
  
 Now double click on timer
  
 private void timer1_Click(object sender, EventArgs e) 
 {
     this.btnprogress.increment(1);
 } 
  
 We can also control the speed of the interval by a timer property.