Question

我正在尝试创建一个抽象类，它封装了我希望所有表继承的基本功能。我有几百个表/视图，并希望在所有类的编码方式中强制执行一些统一性。我知道C＃不允许使用抽象枚举，但有没有更好的方法来实现我想要实现的目标？

public abstract class basetbl
{
    public abstract enum efields;

    public virtual void doSort(params efields[] sortfields)
    {
        // some generic sort algorithm
    }
}
public class sometbl : basetbl
{
    public override enum efields
    {
        field1 = 0,
        field2 = 1,
        field3 = 2
    }
    public override void doSort(params efields[] sortfields)
    {
        // or some other code if the base algorithm is insufficient
    }
}
public class testenum
{
    ...
    public void dosort()
    {
        sometbl stbl = new sometbl();
        // get some data
        stbl.doSort(stbl.efields.field2, stbl.efields.field1);
        // do some stuff
        stbl.doSort(stbl.efields.field3);
    }
    ...
}

Answer 1

也许Generics可以帮助你。通过将基类声明为泛型，可以帮助开发人员考虑声明内部枚举。

public class basetbl<TEnum>
{  
    public virtual void doSort(params TEnum[] sortfields)
    {
        // some generic sort algorithm
    }
}

public class sometbl : basetbl<sometbl.fields>
{
    public enum fields
    {
        field1 = 0,
        field2 = 1,
        field3 = 2
    }
    public override void  doSort(params fields[] sortfields)
    {
        // or some other code if the base algorithm is insufficient
    }
}

public class testenum
{
    ...
    public void dosort()
    {
        sometbl stbl = new sometbl();
        // get some data
        stbl.doSort(sometbl.fields.field2, sometbl.fields.field1);
        // do some stuff
        stbl.doSort(sometbl.fields.field3);
    }
    ...
}

枚举还是不枚举？

1 个答案: