private void Clear()
{
leftOperand = 0;
rightOperand = 0;
operation = Operations.None;
FormatValue();
}
private void Calc(Operations operation)
{
Calc();
this.operation = operation;
leftOperand = rightOperand;
rightOperand = 0;
FormatValue();
}
private bool HandleException(Operations op)
{
if (op.Equals(Operations.Sqrt) || op.Equals(Operations.Reciprocal))
{
Result_Click(this.Result, System.EventArgs.Empty);
return true;
}
return false;
}
public void initialize()
{
outbox.Text = "";
bnPlus.IsEnabled = true;
bnMinus.IsEnabled = true;
bnMult.IsEnabled = true;
bnDev.IsEnabled = true;
bnEq.IsEnabled = false;
choosedOperation = Operations.None;
}
private void Calc()
{
try
{
switch (operation)
{
case Operations.None:
leftOperand = rightOperand;
break;
case Operations.Add:
leftOperand += rightOperand;
break;
case Operations.Sub:
leftOperand -= rightOperand;
break;
case Operations.Mul:
leftOperand *= rightOperand;
break;
case Operations.Div:
leftOperand /= rightOperand;
break;
}
rightOperand = leftOperand;
leftOperand = 0;
operation = Operations.None;
FormatValue();
}catch(Exception ex)
{
}
}
private void Operation_Click(object sender, RoutedEventArgs e)
{
if (outbox.Text == "") return;
a = Convert.ToDouble(outbox.Text);
outbox.Text = "";
bnEq.IsEnabled = true;
switch(((Button)sender).Name)
{
case "bnPlus":
choosedOperation = Operations.Plus;
break;
case "bnMinus":
choosedOperation = Operations.Minus;
break;
case "bnMult":
choosedOperation = Operations.Mult;
break;
case "bnDev":
choosedOperation = Operations.Devision;
break;
}
bnPlus.IsEnabled = false;
bnMinus.IsEnabled = false;
bnMult.IsEnabled = false;
bnDev.IsEnabled = false;
}