private void Form3_KeyDown(object sender, KeyEventArgs e) { if (e.KeyCode == Keys.D1) { S.PerformClick(); } else if (e.KeyCode == Keys.D2) { E.PerformClick(); } else if (e.KeyCode == Keys.D3) { DE.PerformClick(); } else if (e.KeyCode == Keys.D4) { Q.PerformClick(); } else if (e.KeyCode == Keys.D5) { DQ.PerformClick(); } else if (e.KeyCode == Keys.D6) { H.PerformClick(); } else if (e.KeyCode == Keys.D7) { DH.PerformClick(); } else if (e.KeyCode == Keys.D8) { W.PerformClick(); } else if (e.KeyCode == Keys.S) { if (button4.FlatStyle == FlatStyle.Standard) { button4.PerformClick(); } } else if (e.KeyCode == Keys.A) { if (button1.FlatStyle == FlatStyle.Standard) { button1.PerformClick(); } } }