private void txtInput_KeyPress(object sender, KeyPressEventArgs e)
{
try
{
if (e.KeyChar == (char)Keys.Escape)
{
e.Handled = true;
stack.Clear();
RefreshCalc();
}
if (stack.Operate(txtInput.Text + e.KeyChar.ToString()))
{
e.Handled = true;
RefreshCalc();
}
else if (e.KeyChar == (char)Keys.Enter && !stack.AddOperand(txtInput.Text))
{
MessageBox.Show($"Invalid input: {txtInput.Text}!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
else if (e.KeyChar == (char)Keys.Enter)
{
RefreshCalc();
}
}
catch (Exception ex)
{
e.Handled = true;
txtInput.Clear();
MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
public void ReadValue()
{
var valueOrSymbol = Console.ReadLine();
try
{
if (!operationStack.AddOperand(valueOrSymbol) && !operationStack.Operate(valueOrSymbol))
{
DisplayErrorMessage($"Invalid symbol: {valueOrSymbol}");
}
}
catch (Exception e)
{
DisplayErrorMessage(e.Message);
}
Refresh();
}