Class Metered

public class Metered
    {
        private double _meteredValue;
        public double MeteredValue
        {
            get => _meteredValue;
            set => _meteredValue = value;
        }
        public void Print()
        {
            Console.WriteLine(_meteredValue);
        }
    }

Metered metered = new Metered();
   metered.SetMeteredKey("PublicKey", "PrivateKey");

Dim metered As Metered = New Metered
metered.SetMeteredKey("PublicKey", "PrivateKey")

Metered meterered = new Metered();
   meterered.SetMeteredKey("MyPublicKey", "MyPrivateKey");
   Console.WriteLine($"Credit before operation: {Metered.GetConsumptionCredit():F2}");
   Console.WriteLine($"Consumption quantity before operation: {Metered.GetConsumptionQuantity():F2}");
   string dataDir = RunExamples.GetDataDir_Pages();
   Document document = new Document(Path.Combine(dataDir, "Aspose.one"));
   document.Save(Path.Combine(dataDir, "MeteredLicense.pdf"));
   Console.WriteLine($"Credit before operation: {Metered.GetConsumptionCredit():F2}");
   Console.WriteLine($"Consumption quantity before operation: {Metered.GetConsumptionQuantity():F2}");

public Metered()
   {
   }

public static decimal GetConsumptionCredit()
{
    var consumption = GetTotalConsumption();
    var credit = 0m;
    if (consumption > MaxConsumption)
        credit = MaxAllowableCredit;
    else
        credit = CalculateCredit(consumption);
    return credit;
}

public static decimal GetConsumptionQuantity()
   {
   }

public void ResetMeteredKey()
   {
   }

public void SetMeteredKey(
      string publicKey,
      string privateKey)
   {
   }

Metered metered = new Metered();
   metered.SetMeteredKey("MyPublicKey", "MyPrivateKey");
   Console.WriteLine($"Credit before operation: {Metered.GetConsumptionCredit():F2}");
   Console.WriteLine($"Consumption quantity before operation: {Metered.GetConsumptionQuantity():F2}");
   string dataDir = RunExamples.GetDataDir_Pages();
   Document document = new Document(Path.Combine(dataDir, "Aspose.one"));
   document.Save(Path.Combine(dataDir, "MeteredLicense.pdf"));
   Console.WriteLine($"Credit before operation: {Metered.GetConsumptionCredit():F2}");
   Console.WriteLine($"Consumption quantity before operation: {Metered.GetConsumptionQuantity():F2}");