mvc使用JsonResult返回Json数据
controller 中定义以下方法:
- public JsonResult UpdateSingle(int id, string actionName, string actionValue)
- {
- var res = new JsonResult();
- //var value = "actionValue";
- //db.ContextOptions.ProxyCreationEnabled = false;
- var list = (from a in db.Articles
- select new
- {
- name = a.ArtTitle,
- yy = a.ArtPublishTime
- }).Take(5);
- //记得这里要select new 否则会报错:序列化类型 System.Data.Entity.DynamicProxies XXXXX 的对象时检测到循环引用。
- //不select new 也行的加上这句 //db.ContextOptions.ProxyCreationEnabled = false;
- res.Data = list;//返回列表
- var name = "小华";
- var age = "12";
- var name1 = "小华";
- var age1 = "12";
- res.Data = new object[] { new { name, age }, new { name1, age1 } };//返回一个自定义的object数组
- var person = new { Name = "小明", Age = 22, Sex = "男" };
- res.Data = person;//返回单个对象;
- res.Data = "这是个字符串";//返回一个字符串,意义不大;
- res.JsonRequestBehavior = JsonRequestBehavior.AllowGet;//允许使用GET方式获取,否则用GET获取是会报错。
- return res;
- }
页面调用:
- <a href="javascript:void(0);" onclick="javascript:upclick(this);">Click Me</a>
- <script type="text/javascript">
- function upclick(o) {
- var obj = $(o);
- alert(obj);
- $.ajax({
- url: "/Articles/UpdateSingle?ran=" + Math.random(),
- type: "GET",
- dataType: "json",
- data: { id: obj.attr("id"), actionName: obj.attr("actionName"), actionValue: obj.attr("actionValue") },
- success: function (data) {
- // if (data.result == "True") {
- // alert("修改成功!");
- // }
- // if (obj.attr("actionName") == "ArtVerify") {
- // }
- $(o).html(data[0].name);
- obj.attr("actionValue", data[0].result);
- }
- })
- }
- </script>
以上是在mvc中使用,在webform中怎么使用呢?
在webform中要引用Newtonsoft.Json.dll;
当然你也可以自己拼接字符串。
- protected void Page_Load(object sender, EventArgs e)
- {
- var customer = new customer { name = "李华", sex = "男" };
- var customer1 = new customer { name = "小芳", sex = "女" };
- var li = new List<customer>();
- li.Add(customer);
- li.Add(customer1);
- var list = Newtonsoft.Json.JavaScriptConvert.SerializeObject(li);
- var tt = "[{\"name\":\"李华\",\"sex\":\"男\"},{\"name\":\"小芳\",\"sex\":\"女\"}]";
- //new Newtonsoft.Json.JsonSerializer()..(customer);
- Response.Write(tt);
- Response.End();
- }
- public class customer
- {
- public string name { get; set; }
- public string sex { get; set; }
- }
页面方法:
- <p>
- <a href="javascript:void(0)" onclick="javascript:getJsonData();">GetJsonData</a>
- </p>
- <div id="dataDiv">
- ggg
- </div>
- <script type="text/javascript">
- function getJsonData() {
- var str = "";
- $.getJSON("/Json.aspx", function (data) {
- var tt = "";
- $.each(data, function (k, v) {
- $.each(v, function (kk, vv) {
- tt += kk + ":" + vv + "<br/>";
- });
- });
- $("#dataDiv").html(tt);
- });
- }
- </script>
显示结果: