How to clean up if else series

Question

Work in C#, want to reduce if else series, entity have two property FromServiceID and ToServiceID ,suppose my ServiceClass instanc

Answer 1

What you could do is to put all the variations into an enum and call the enum values exactly like your methods that you would like to call. (I would suggest not to use numbers in the name, since the compiler won't allow it)

For the sake of simplicity and testability I put the enum and the methods into the same class:

public class ServiceClass
{
    public enum ServiceID
    {
        OneKWithdrawal,
        Ten_KWithdrawal,
        BTWithdrawal,
        OneKDeposit,
        Ten_KDeposit,
        BTDeposit
    }
    public ServiceID From_Ser_ID { get; set; }
    public ServiceID To_Ser_ID { get; set; }

    public void One_KWithdrawal()
    { Console.WriteLine("One_KWithdrawal"); }

    public void Ten_KWithdrawal()
    { Console.WriteLine("Ten_KWithdrawal"); }

    public void BTWithdrawal()
    { Console.WriteLine("BTWithdrawal"); }

    public void One_KDeposit()
    { Console.WriteLine("One_KDeposit"); }

    public void Ten_KDeposit()
    { Console.WriteLine("Ten_KDeposit"); }
}

This would be the method that would execute your if-condition methods. It uses reflection to access the methods that are coded in the enum. You probably have to adjust the object parameter in the Invoke(sc, null); call depending on where your methods are situated. If they are in the same class as where you would call execute you can use this.

public static void execute(ServiceClass sc)
{
    sc.GetType().GetMethod(sc.From_Ser_ID.ToString()).Invoke(sc, null);
    sc.GetType().GetMethod(sc.To_Ser_ID.ToString()).Invoke(sc, null);
}

And here you can test the entire code:

public static void Main(string[] args)
{

    ServiceClass entity = new ServiceClass();
    entity.From_Ser_ID = ServiceClass.ServiceID.BTWithdrawal;
    entity.To_Ser_ID = ServiceClass.ServiceID.Ten_KDeposit;

    execute(entity);
}

So you would end up with an enum and 2 lines of code.