private void btnAddition_Click(object sender, EventArgs e) { double zahl1 = Convert.ToDouble(txtOperand1.Text); double zahl2 = Convert.ToDouble(txtOperand2.Text); double ergebnis = ops.Addition(zahl1, zahl2); lblErgebnis.Text = Convert.ToString(ergebnis); lblOperator.Text = "+"; }
private void btnAddition_Click(object sender, EventArgs e) { _rechenoperationen.Addition(txtOperand1, txtOperand2, lblErgebnis, lblOperator); }