设置屏幕按钮的快捷键方法：
KeyPreview的属性设置为True
//设置快捷键 private void TestMain_KeyDown(object sender, KeyEventArgs e) { if(e.Modifiers.CompareTo(Keys.Alt) ==0) { //选择导购员 if(e.KeyCode == Keys.Q) { ddlSaleMan.Focus(); ddlSaleMan.SelectedIndex = 0; } //客户编码 if (e.KeyCode == Keys.W) { txtCusCode.Focus(); txtCusCode.SelectAll(); } //手动抹零 if (e.KeyCode == Keys.E) { txbManuallySetZero.Focus(); txbManuallySetZero.SelectAll(); } } switch (e.KeyCode) { //结账 case Keys.F1: btnCheckout_Click(sender, e); break; //取单 case Keys.F2: btnTakeMenu_Click(sender, e); break; //存单 case Keys.F3: btnSaveMenu_Click(sender, e); break; //改价 case Keys.F4: btnUpatePrice_Click(sender, e); break; //改数 case Keys.F5: btnUpdateAmount_Click(sender, e); break; //删除 case Keys.F6: btnDelMenu_Click(sender, e); break; //赠单 case Keys.F7: btnFreeMenu_Click(sender, e); break; //录入临时品项 case Keys.F8: btnImport_Click(sender, e); break; //结账单补打 case Keys.F9: btnPrintAgain_Click(sender, e); break; //清除 case Keys.F10: btnClearForm_Click(sender, e); break; // case Keys.F11: break; case Keys.PageDown: //付款 if (MessageBox.Show("确定选择付款方式吗？", "付款方式选择", MessageBoxButtons.OKCancel) == DialogResult.OK) { gruopXF.Focus(); gruopXF.BackColor = Color.Khaki; } break; case Keys.Escape: //系统退出 if (MessageBox.Show("确实要退出吗？", "退出程序", MessageBoxButtons.OKCancel) == DialogResult.OK) { UserService.ClearUserLock(UserCode); Application.Exit(); } break; default: break; } //数据快捷键操作 if (ActiveControl.GetType().Name != "GroupBox") return; #region 数据快捷键 if (e.Modifiers != Keys.Alt) { return; } else { switch (e.KeyCode) { case Keys.NumPad1: cbCash.Checked = true; txbCash.Focus(); break; case Keys.D1: cbCash.Checked = true; txbCash.Focus(); break; case Keys.NumPad2: cbUnionPayCards.Checked = true; txbUnionPayCards.Focus(); break; case Keys.D2: cbUnionPayCards.Checked = true; txbUnionPayCards.Focus(); break; case Keys.NumPad3: cbCheck.Checked = true; txbCheck.Focus(); break; case Keys.D3: cbCheck.Checked = true; txbCheck.Focus(); break; case Keys.NumPad4: cbGuaZhang.Checked = true; txtGuaZhang.Focus(); break; case Keys.D4: cbGuaZhang.Checked = true; txtGuaZhang.Focus(); break; case Keys.NumPad5: cbOther.Checked = true; cbxOther.Focus(); break; case Keys.D5: cbOther.Checked = true; cbxOther.Focus(); break; default: break; } } #endregion }