public CalculatorViewModel()
{
Canculator = new AppCalculator();
AddCharCommand = new Command <string>((key) =>
{
InputString += key;
});
DeleteCharCommand = new Command(() =>
{
InputString = InputString[0..^ 1];
},
static void Main()
{
AppCalculator Canculator = new AppCalculator();
Canculator.IDE.Notify += DisplayMessage;
for (; ;)
{
try
{
Console.WriteLine("Select an operation:\n\t1 - Show calculation history\n\t2 - Expression calculation\n\t3 - To clean history\n\t4 - Show log");
int choice = int.Parse(Console.ReadLine());
switch (choice)
{
case 2:
Console.Write("Separated MatheXpression: ");
string input = Console.ReadLine();
double result = Canculator.IDE.Start(input);
Console.WriteLine($"Result calculations = {result}");
break;
case 1:
var history = Canculator.IDE.Calculation_history();
Console.WriteLine("Id_\t\tExpression\tResult\t\tDateTime");
Console.WriteLine(new string('_', 70));
foreach (History row in history)
{
Console.WriteLine($"{row.Id}\t{row.Expression}\t{row.Result}\t{row.DateTime}");
Console.WriteLine(new string('_', 70));
}
break;
case 3:
Canculator.IDE.Clean_Log();
break;
case 4:
Console.WriteLine(Canculator.IDE.ReadLogger());
break;
default:
throw new UserExceptions("Error!", choice);
}
}
catch (UserExceptions ex)
{
Console.WriteLine(ex.Message);
Console.WriteLine($"Incorect input: {ex.Value}");
}
catch (DataBExceptions ex)
{
Console.WriteLine(ex.Message);
}
catch (CalcExceptions ex)
{
Console.WriteLine(ex.Message);
}
catch (AudExceptions ex)
{
Console.WriteLine(ex.Message);
}
catch (DivideByZeroException ex)
{
Console.WriteLine(ex.Message);
}
catch
{
Console.WriteLine("An error has occurred. Repeat the entry!");
}
}
}