NETCore3Demo/CallbackDemo/FunctionClass.cs

using System;
using System.Collections.Generic;
using System.Text;

namespace CallbackDemo
{
    /// <summary>
    ///   开发层处理，开发人员编写具体的计算方法 ,由普通开发人员处理相关计算
    /// </summary>
    public class FunctionClass
    {
        public int GetSum(int a, int b)
        {
            return (a + b);
        }
        public int GetMulti(int a, int b)
        {
            return (a * b);
        }
    }
}