CalculatorStandardView.Actions.cs

public partial class CalculatorStandardView
{
    private readonly WindowsDriver<WindowsElement> _driver;

    public CalculatorStandardView(WindowsDriver<WindowsElement> driver) => _driver = driver;

    public void PerformCalculation(int num1, char operation, int num2)
    {
        ClickByDigit(num1);
        PerformOperations(operation);
        ClickByDigit(num2);
        EqualsButton.Click();
    }
        
    private void ClickByDigit(int digit)
    {
        switch (digit)
        {
            case 1:
                OneButton.Click();
                break;
            case 2:
                TwoButton.Click();
                break;
            case 3:
                ThreeButton.Click();
                break;
            case 4:
                FourButton.Click();
                break;
            case 5:
                FiveButton.Click();
                break;
            case 6:
                SixButton.Click();
                break;
            case 7:
                SevenButton.Click();
                break;
            case 8:
                EightButton.Click();
                break;
            case 9:
                NineButton.Click();
                break;
            default:
                throw new NotSupportedException($"Not Supported digit = {digit}");
        }
    }

    private void PerformOperations(char operation)
    {
        switch (operation)
        {
            case '+':
                PlusButton.Click();
                break;
            case '-':
                MinusButton.Click();
                break;
            case '=':
                EqualsButton.Click();
                break;
            case '*':
                MultiplyByButton.Click();
                break;
            case '/':
                DivideButton.Click();
                break;
            default:
                throw new NotSupportedException($"Not Supported operation = {operation}");
        }
    }

    private string GetCalculatorResultText() => ResultsInput.Text.Replace("Display is", string.Empty).Trim();
}