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 : Create one windows form project Add Form 2 in the solution. Add method to event Key Up in Form 1 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;