delegate void dSetText(string text);
private void SetText(string text)
 {                
      if (InvokeRequired)      
      {    
          dSetText d = new dSetText(SetText);       
          this.Invoke(d);      
      }  
      else
      {       
       this.textBox1.Text = text; 
      }
 }
//csharp/190