How to use Jsonresult

This article mainly introduces the details of MVC using Jsonresult return JSON data, with a certain reference value, interested in small partners can refer to.

The following methods are defined in the controller:

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);    Remember here to select New otherwise error: A circular reference was detected when serializing an object of type System.Data.Entity.DynamicProxies XXXXX.    //Do not select New also line add this sentence//db. contextoptions.proxycreationenabled = false;    Res. Data = list;//returns     the list var name = "Xiao Hua";    var age = "n";    var name1 = "Xiao Hua";    var age1 = "n";    Res.  Data = new object[] {new {name, age}, new {name1, age1}};//Returns a custom object array var person     = new {name = "xiaoming", age =, Sex = "Male"};    Res. Data = person;//Returns a single object;     Res. Data = "This is a string";//returns a string with little meaning;     Res. Jsonrequestbehavior = jsonrequestbehavior.allowget;//is allowed to be obtained using GET, otherwise error is obtained with Get.    return res;   }

Page Call:

<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 ("Modified successfully!") ");    }//    if (obj.attr ("actionname") = = "Artverify") {  //    }     $ (o). html (data[0].name);     Obj.attr ("Actionvalue", Data[0].result);    }   )  } </script>

The above is used in MVC, how to use it in WebForm?

In the WebForm to refer to Newtonsoft.Json.dll;

Of course you can also stitch your own strings.

protected void Page_Load (object sender, EventArgs e)   {    var customer = new Customer {name = "Li Hua", sex = "male"};
  
   var customer1 = new Customer {name = "Small Fang", sex = "female"};    var li = new list<customer> ();    Li. ADD (customer);    Li. ADD (customer1);    var list = Newtonsoft.Json.JavaScriptConvert.SerializeObject (LI);    var tt = "[{\" name\ ": \" Li hua \ ", \" sex\ ": \" male \ "},{\" name\ ": \" Small fang \ ", \" sex\ ": \" female \ "}]";    New Newtonsoft.Json.JsonSerializer (): (customer);    Response.Write (TT);    Response.End ();   }    public class customer   {public    string name {get; set;}    public string Sex {get; set;}   }
  

Page Method:

<p>   <a href= "javascript:void (0)" onclick= "Javascript:getjsondata ();" >GetJsonData</a>  </p>  <p id= "Datap" >   ggg  </p>  <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/>";      });     });     $ ("#datap"). HTML (TT);    });   }  </script>

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