C#子类使用相同的方法

编辑:根据问题更新进行更新.

既然你在两种方法中显然都有相同的逻辑,我会像这样重构它:

abstract class SuperClass
{
    protected bool HasContentImpl(int chapterID, int institution)
    {
        Database db = new Database();
        int result;

        if (institution >= 0) // assuming negative numbers are out of range
            result = db.ExecuteSpRetVal(chapterID, institution);
        else
            result = db.ExecuteSpRetVal(chapterID);

        return result > 0;
    }
}

class SubClass1 : SuperClass
{
    public bool HasContent(int chapterID)
    {
        return base.HasContentImpl(chapterID, -1);
    }
}

class SubClass2 : SuperClass
{
    public bool HasContent(int chapterID, int institution)
    {
        return base.HasContentImpl(chapterID, institution);
    }
}