C# - How to open form in full screen

This example shows how to make open windows form full screen of computer.

In this example, i will use F11 as a shortcut key to turn form to full screen.

Step By Step :

1. Create one windows form project
2. Add Form 2 in the solution.
3. Add method to event Key Up in Form 1
4. Copy code below in Key Up  event method Form 1

The Code

private bool _bFullScreenMode = false;

:
:
:

private void Form1_KeyUp(object sender, System.Windows.Forms.KeyEventArgs e)
{
	if ( e.KeyData == Keys.F11)
	{
	if (_bFullScreenMode == false)
	    {
		Form2 f = new Form2();
		this.Owner = f;
		this.FormBorderStyle = FormBorderStyle.None;
		this.Left = (Screen.PrimaryScreen.Bounds.Width/2 - this.Width/2);
		this.Top = (Screen.PrimaryScreen.Bounds.Height/2 - this.Height/2);
		f.Show();
		_bFullScreenMode = true;
		f.KeyUp +=new KeyEventHandler(Form1_KeyUp);
            }
            else
            {
		Form f = this.Owner;
		this.Owner = null;
		f.Close();
		this.FormBorderStyle = FormBorderStyle.Sizable;
            }
	}
}

By Mohd Zulkamal
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