title: Notifications in winforms
body: <p>I want to know how can I show notifications in the windows form applications automatically.</p>
  
  <p>my code here:</p>
  
  <pre><code>cn.Open();
  SqlCommand cmd = new SqlCommand("select Count(*) from Issue where Return_Date &lt; @Date", cn);
  cmd.Parameters.AddWithValue("@Date",DateTime.Now);
  int NumberOfOverdue = (int)cmd.ExecuteScalar();
  cn.Close();
  
  if (NumberOfOverdue &gt; 0)
  {
      notifyIcon1.ShowBalloonTip(500, "Library Management System", "There are " + NumberOfOverdue + " overdued book", ToolTipIcon.Warning);
  }
  </code></pre>
  
  <p>The code is located int the <code>Form_Load</code> and obviously it only triggers after I start the program; but I want the notification to show right after the requirement in the if condition is met automatically.</p>