.NET (Core and Framework)

private bool loadedActivated = false;

private void Form1_Load(object sender, System.EventArgs e)
{
  this.Visible = false;
}
private void Form1_Activated(object sender, System.EventArgs e)
{
  if (!loadedActivated)
  {
    this.Visible = false;
    loadedActivated = true;
  } 
}

private void notifyIcon1_Click(object sender, System.EventArgs e)
{
  this.Opacity = 1.00;
  this.Visible = true;
}

"You can have everything in life you want if you will just help enough other people get what they want." --Zig Ziglar

"On two occasions, I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able to rightly apprehend the kind of confusion of ideas that could provoke such a question."
--Charles Babbage (1791-1871)