两种委托的写法
// 声明委托 public delegate int MyMethod(int i, int n); public IActionResult Wt1() { MyMethod myMethod = (int i, int n) => { return i + n; }; return Json(myMethod(2, 2)); } public IActionResult Wt2() { Func<int, int, string> func = (i, n) => { int s = i + n; return s.ToString(); }; return Json(func(1,2)); }