如何结束上级方法

Question

        public void a()
        {
            abc();
            MessageBox.Show("错误");
        }        public void abc()
        {
            int i = 0;
            if (i == 0)
            {
                //在此如何写代码可以结束a的后续代码的执行
                //我不想用abc()返回一个bool值，a()中对其判断后再return
            }
        }

Answer 1

public void a() 
        { 
            if(!abc())
            {
               MessageBox.Show("错误"); 
               return; 
             }
        }         public bool abc() 
        { 
            int i = 0; 
            if (i == 0) 
            { 
                return false       
            } 
            return true;
        } 

Answer 2

        public void a() 
        { 
            try{abc();}
            catch{return;}
            MessageBox.Show("错误");
        }         public void abc() 
        { 
            int i = 0; 
            if (i == 0) 
            { 
                throw(); 
            } 
        }

Answer 3

回2楼，我都已经明说了，不使用返回bool值方式