internal class Program
{
    private static void Main(string[] args)
    {
        Child d = new Child();
        int i = 100;
        d.AddToTotal(i);
 
        Console.ReadKey();
    }
 
    private class Parent
    {
        public virtual void AddToTotal(int x)
        {
            Console.WriteLine("Parent.AddToTotal(int)");
        }
    }
 
    private class Child : Parent
    {
        public override void AddToTotal(int number)
        {
            Console.WriteLine("Child.AddToTotal(int)");
        }
 
        public void AddToTotal(double currency)
        {
            Console.WriteLine("Child.AddToTotal(double)");
        }
    }
}

问题是这个电话

public void AddToTotal(double currency)

虽然我用int调用它,它应该使用

public override void AddToTotal(int number)

使用父级返回预期结果.

Parent d = new Child();
 int i = 100;
 d.AddToTotal(i);

更新：

感谢@Jan和@azyberezovsky将我指向specification.我已经向基类添加了一个虚拟空方法,以便现在解决这个问题.