public ActionResult Index(CalculatorVM model)
{
double res = 0D;
if (ModelState.IsValid)
{
switch (model.CommandText.ToLower())
{
case "add":
res = model.FirstNumber + model.SecondNumber;
break;
case "sub":
res = model.FirstNumber - model.SecondNumber;
break;
case "mul":
res = model.FirstNumber * model.SecondNumber;
break;
case "div":
res = model.FirstNumber / model.SecondNumber;
break;
default:
break;
}
ViewBag.Result = res;
SetLastResult(model, res);
ViewBag.LastResult = GetLastResults();
return(View(model));
}
ViewBag.LastResult = GetLastResults();
return(View(model));
}
private void SetLastResult(CalculatorVM model, double result)
{
var lastResults = Session["LastResults"] == null ? new List <ResultVM>() : (List <ResultVM>)Session["LastResults"];
lastResults.Insert(0, new ResultVM
{
FirstNumber = model.FirstNumber,
SecondNumber = model.SecondNumber,
CommandText = model.CommandText,
Result = result,
CommandOperator = StringHelper.GetOperator(model.CommandText)
});
if (lastResults.Count > 3)
{
Session["LastResults"] = lastResults.Take(3).ToList();
}
else
{
Session["LastResults"] = lastResults;
}
}
public NumberButtonCommand(CalculatorVM vm)
{
VM = vm;
}
public ACButtonCommand(CalculatorVM vm)
{
VM = vm;
}
public PercentButtonCommand(CalculatorVM vm)
{
VM = vm;
}
public EqualsButtonCommand(CalculatorVM vm)
{
VM = vm;
}
public OperatorButtonCommand(CalculatorVM vm)
{
VM = vm;
}
public DecimalButtonCommand(CalculatorVM vm)
{
VM = vm;
}
public NegativeButtonCommand(CalculatorVM vm)
{
VM = vm;
}
