将json数组转换为javaScript对象

Question

I had problem i need to generate a js object from array of json objects using c# ie this is json :-

[
     { 
         "FieldName": "lastPrice",
         "LookupID": 1,
         "FieldAr": "اخر سعر",
         "FieldEn": "last price"
     },
     {
         "FieldName": "currentPrice",
         "LookupID": 2,
         "FieldAr": "السعر الحالي",
         "FieldEn": "current price"
     }
]

and what I need is :

 var localAr = {};
 local.lastPrice /*field name*/ = "اخر سعر"; // fieldAr
 var  localEn = {};
 local.lastPrice /*field name*/ = "last price"; //FieldEn

I have no idea how to do this or even what i supposed search for

Answer 1

You can do this using square-bracket notation, which allows you to use a string as a property name

 var input = [ { "FieldName": "lastPrice", "LookupID": 1, "FieldAr": "اخر سعر", "FieldEn": "last price" }, { "FieldName": "currentPrice", "LookupID": 2, "FieldAr": "السعر الحالي", "FieldEn": "current price" } ]; var fieldAr = {}; for(var i=0;i<input.length;i++){ var item = input[i]; fieldAr[item.FieldName] = item.FieldAr; } console.log(fieldAr) 

Answer 2

Updated Response

Ok, so you want to accomplish something similar in C# as to the solution posted below. The first thing you would need to do is deserialize the JSON into an object. The easiest way would be to use JSON.NET and convert to a dynamic object and then convert it to a dictionary type. You would return the dictionary as JSON (either using MVC's JSON method or by converting back using JSON.NET)

var json = GetJson();
dynamic fields = JArray.Parse(json);
var myObj = new Dictionary<string, object>();

foreach (var field in fields)
{
   myObj.Add((string)field["FieldName"], field["FieldAr"]);
}

Console.WriteLine(JsonConvert.SerializeObject(myObj));

Original Response If I understand correctly, you want the JSON being returned into a javascript object that looks similar to the format:

var newObj = {
   lastPrice: "اخر سعر",
   currentPrice:  "السعر الحالي"
};

If this is correct, I would parse the object into a JSON object then create a new object from it. For example,

var fields= JSON.parse(data);
var myObj = {};

for(var index = 0; index < fields.length; fields++){
   myObj[fields[index].FieldName] = fields[index].FieldAr;
}

Answer 3

It's pretty straight-forward, just loop through each entry and store the property value based on the property name.

 // Assume you called JSON.parse(json) to get the following parsed data... var parsedData = [{ "FieldName": "lastPrice", "LookupID": 1, "FieldAr": "اخر سعر", "FieldEn": "last price" }, { "FieldName": "currentPrice", "LookupID": 2, "FieldAr": "السعر الحالي", "FieldEn": "current price" }]; var strings = { en: {}, ar: {} }; for(var i = 0; i<parsedData.length;i++){ var data = parsedData[i]; strings.en[data.FieldName] = data.FieldEn; strings.ar[data.FieldName] = data.FieldAr; } console.log(strings); 

That will allow you to access properties based on locale and field name, like so:

console.log(strings.en.lastPrice); // "last price"
console.log(strings.ar.lastPrice); // "اخر سعر"

Answer 4

You can create a class in c# for your object, instantiate 2 instances of the class with your required property values, add to a list, then use the Newtonsoft.Json library to serialize the list. Simples :)

public class Field{ 
    public string FieldName {get;set;}
    public int LookupID {get;set;}
    public string FieldAr {get;set;}
    public string FieldEn {get;set;}
}

var field1 = new Field(){ FieldName = "lastPrice", LookupID = 1, FieldAr = "اخر سعر", FieldEn = "last price" };
//init other field here

var fields = new List<Field>() {field1};

var fieldsString = JsonConvert.SerializeObject(fields);