c# - if else系列如何清理

Question

在 C# 中工作，想减少 if else 系列，实体有两个属性 FromServiceID 和 ToServiceID ，假设我的 ServiceClass 实例有以下信息.如何清理波纹管代码？任何类型的建议都将被接受。

entity= new ServiceClass();
entity.FromServiceID=3
entity.ToServiceID=1

if (entity.FromServiceID == 1)
{
    entity.1KWithdrawal();
}
else if (entity.FromServiceID == 2)
{
    entity.10KWithdrawal();
}
else if (entity.FromServiceID == 3)
{
    entity.BTWithdrawal();
}           
if (entity.ToServiceID == 1)
{
    entity.1KDeposit();
}
else if (entity.ToServiceID == 2)
{
    entity.10KDeposit();
}
else if (entity.ToServiceID == 3)
{
    entity.BTDeposit();
}


public class ServiceClass
{ 

    public int FromServiceID { get; set; }
    public int ToServiceID { get; set; }

    public void 1KWithdrawal()
    { Console.WriteLine("One_KWithdrawal"); }

    public void 10KWithdrawal()
    { Console.WriteLine("Ten_KWithdrawal"); }

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

    public void 1KDeposit()
    { Console.WriteLine("One_KDeposit"); }

    public void 10KDeposit()
    { Console.WriteLine("Ten_KDeposit"); }

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

Answer 1

使用 Dictionary .像这样:

Dictionary<int, ServiceClass> dictionary = new Dictionary<int, ServiceClass>()
{
    {1,  new ServiceClass()},
    {2,  new ServiceClass()},
    {3,  new BTWithdrawal()},//assume BTWithdrawal inherits from ServiceClass
};

如何使用它的示例:

ServiceClass value=new ServiceClass();
value.FromServiceId=1;
value.ToServiceId = 2;
dictionary.TryGetValue(value.FromServiceId, out value);
//or dictionary.TryGetValue(value.ToServiceId, out value);
if (value != null) MessageBox.Show(value.Id.ToString());