//返回json
        public ActionResult getJson()
        {
            return Json(new { id = 1, name = "zhangsan" }, JsonRequestBehavior.AllowGet);
        }
		//返回列表
        public ActionResult getList()
        {
            return View(new List<User> { 
            new User(){
                id =1,
                name ="zhangsan"},
                new User(){
                id =2,
                name ="zhangsan2"},
                new User(){
                id =3,
                name ="zhangsan3"},
                new User(){
                id =4,
                name ="zhangsan4"}
            });
        }

html页面

@model List<WebApplication3.Models.User>
@{
    ViewBag.Title = "getList";
    string Name = @"<span style='color:red'>hello</span>";
}

<h2>getList</h2>
@foreach (var us in Model)
{
    <li>@us.name</li>
    <li>@us.id</li>
    <li>@us.nickname</li>
}

@Html.Raw(@"<span style='color:red'>hello</span>")
@Html.Raw(Name)