Deserialize string to double [duplicate]

Question

I have this JSON:

{ "price": "0.002200" }

I'd like to deserialize price to double, but it is a string.

How can I do?

Have you tried? Deserializing to a public double price { get; set; } property already just works, see dotnetfiddle.net/7bUCVL — dbc
– dbc, Commented Dec 6, 2019 at 5:07

RoadRunner · Accepted Answer · 2019-12-06 05:46:13Z

You would just create a class to map the JSON:

public class RootObject { public double price { get; set; } }

Then just deserialize with JsonConvert.DeserializeObject:

JsonConvert.DeserializeObject<RootObject>(json)

Full Program:

using Newtonsoft.Json; public class RootObject { public double price { get; set; } } public class Program { public static void Main() { var json = @"{""price"": ""0.002200""}"; var root = JsonConvert.DeserializeObject<RootObject>(json); Console.WriteLine(root.price); // 0.0022 } }

Note: This assumes you have the Newtonsoft.Json NuGet package installed.

Simply Ged · Accepted Answer · 2019-12-06 05:09:30Z

One option is to create class that represents the JSON and deserialize into that class:

class Program { static void Main(string[] args) { var json = "{ \"price\": \"0.002200\" }"; var data = JsonConvert.DeserializeObject<Data>(json); Console.WriteLine(data.Price); } } class Data { public double Price { get; set; } }

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