C# MVC之接口返回json数据

step1:新建立一个mvc工程，建立相应的controller（此处按默认的Home建立了HomeController）

step2:修改HomeController中代码，如下：

 public ActionResult Index()
        {
            var data = new List<Object>();
            return Json(data, JsonRequestBehavior.AllowGet);
        }

此时返回的结果 ：

 对应的json视图：

step3:将代码更改为

public ActionResult Index()
        {

            var buildName = new List<Object>();
            var lineChart = new List<Object>();
            var data = new List<Object>();

            data.Add(new
            {
                Buildname = buildName,
                Linechart = lineChart
            });
            return Json(data, JsonRequestBehavior.AllowGet);
        }

效果如下：

step4:向buildName数组添加内容（数组形式）

代码：

 public ActionResult Index()
        {
            int[] table = { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
            var buildName = new List<Object>();
            var lineChart = new List<Object>();
            var data = new List<Object>();

            //向buildName中添加数组0，数组0内的元素为number类型
            var p = from p1 in table
                    where p1 % 2 == 0
                    select p1;
            buildName.Add(p);

            //向buildName中添加数组1，数组1内的元素为Object类型
            var q = from q1 in table
                where q1 % 3 == 0
                select new { id = q1 };
            buildName.Add(q);

            //向buildName中添加对象，对象的内同为数组1
            buildName.Add(new {id=q});

            data.Add(new
            {
                Buildname = buildName,
                Linechart = lineChart
            });
            return Json(data, JsonRequestBehavior.AllowGet);
        }

效果如下：

step5:向lineChart数组添加内容（数组形式）

①建立一个student类

 class Student
    {
        public int id { get; set; }
        public String name { get; set; }
    }

②建立student容器，实例化并赋值

            //建立student容器，并添加对象
            List<Student> s = new List<Student>();
            s.Add(new Student() { id = 1, name = "张三" });
            s.Add(new Student() { id = 2, name = "李四" });
            s.Add(new Student() { id = 3, name = "王五" });

③建立一个Employee类

class Employee
    {
        public int e_id { get; set; }
        public String e_name { get; set; }
    }

④建立Employee容器，实例化并赋值

 List<Employee> s1 = new List<Employee>();
            s1.Add(new Employee() { e_id = 1, e_name = "工_张三" });
            s1.Add(new Employee() { e_id = 2, e_name = "工_李四" });
            s1.Add(new Employee() { e_id = 3, e_name = "工_王五" });

⑤筛选信息，并将info添加至lineChart数组中

var info =
                from w in s
                join w1 in s1 on w.id equals w1.e_id
                where w.id == 1 || w.id == 2
                 select new
                {
                    id = w.id,
                    stu_name=w.name,
                    emp_name=w1.e_name
                };
            lineChart.Add(info);

完整代码如下：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;

namespace jsonTest1.Controllers
{
    class Student
    {
        public int id { get; set; }
        public String name { get; set; }
    }

    class Employee
    {
        public int e_id { get; set; }
        public String e_name { get; set; }
    }

    public class HomeController : Controller
    {
        //
        // GET: /Home/

        public ActionResult Index()
        {
            int[] table = { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
            var buildName = new List<Object>();
            var lineChart = new List<Object>();
            var data = new List<Object>();

            //向buildName中添加数组0，数组0内的元素为number类型
            var p = from p1 in table
                    where p1 % 2 == 0
                    select p1;
            buildName.Add(p);

            //向buildName中添加数组1，数组1内的元素为Object类型
            var q = from q1 in table
                where q1 % 3 == 0
                select new { id = q1 };
            buildName.Add(q);

            //向buildName中添加对象，对象的内同为数组1
            buildName.Add(new {id=q});

            //建立student容器，并添加对象
            List<Student> s = new List<Student>();
            s.Add(new Student() { id = 1, name = "张三" });
            s.Add(new Student() { id = 2, name = "李四" });
            s.Add(new Student() { id = 3, name = "王五" });

            //建立Employee容器，并添加对象
            List<Employee> s1 = new List<Employee>();
            s1.Add(new Employee() { e_id = 1, e_name = "工_张三" });
            s1.Add(new Employee() { e_id = 2, e_name = "工_李四" });
            s1.Add(new Employee() { e_id = 3, e_name = "工_王五" });

            //筛选信息，并将info添加至lineChart数组中
            var info =
                from w in s
                join w1 in s1 on w.id equals w1.e_id
                where w.id == 1 || w.id == 2
                 select new
                {
                    id = w.id,
                    stu_name=w.name,
                    emp_name=w1.e_name
                };
            lineChart.Add(info);

            data.Add(new
            {
                Buildname = buildName,
                Linechart = lineChart
            });
            return Json(data, JsonRequestBehavior.AllowGet);
        }

    }
}

效果如下：