protected override bool ProcessCmdKey(ref Message msg, Keys keyData) { if (keyData == Keys.F5) { CompileBtn.PerformClick(); return(true); } if (keyData == Keys.F6) { ClearBtn.PerformClick(); return(true); } return(base.ProcessCmdKey(ref msg, keyData)); }
// Division After Checking Our Boolean State. public void Divide(string displayValue) { float.TryParse(displayValue.Trim(), out currentValue); // Using Try-Catch For DivideByZeroException try{ if (changeOperand2 == false) { // Explicitly Throwing Error If Denominator Is Zero. if (operand2 != 0) { LabelEqu.Text = operand1.ToString() + " / " + operand2.ToString() + " = "; operand1 = currentValue / operand2; } else { throw new DivideByZeroException(); } } else { if (currentValue != 0) { operand2 = currentValue; LabelEqu.Text = operand1.ToString() + " / " + operand2.ToString() + " = "; operand1 = operand1 / currentValue; changeOperand2 = false; } else { throw new DivideByZeroException(); } } } catch (DivideByZeroException) { // Resetting Everything And Displaying Error. ClearBtn.PerformClick(); LabelEqu.Text = "ERR"; // Adding It To Our History. vh.addHistory = LabelEqu.Text; } }
// Zorgen dat het toetsenbord gebruikt kan worden private void NumPadInput(object sender, KeyPressEventArgs e) { switch (e.KeyChar.ToString()) { case "0": ZeroBtn.PerformClick(); break; case "1": OneBtn.PerformClick(); break; case "2": TwoBtn.PerformClick(); break; case "3": ThreeBtn.PerformClick(); break; case "4": FourBtn.PerformClick(); break; case "5": FiveBtn.PerformClick(); break; case "6": SixBtn.PerformClick(); break; case "7": SevenBtn.PerformClick(); break; case "8": EightBtn.PerformClick(); break; case "9": NineBtn.PerformClick(); break; case "*": TimesBtn.PerformClick(); break; case "/": DivideBtn.PerformClick(); break; case "-": SubtractBtn.PerformClick(); break; case "+": Addbtn.PerformClick(); break; case ",": DecimalBtn.PerformClick(); break; case ".": DecimalBtn.PerformClick(); break; case "c": ClearBtn.PerformClick(); break; // Twee keer op de "c" toets op het toetsenbord klikken voor een All Clear case "c" + "c": AllClearBtn.PerformClick(); break; default: break; } // De "Enter" toets op het toetsenbord de functie van de "=" toets toewijzen if (e.KeyChar == (char)Keys.Enter) { EqualBtn.PerformClick(); } }