C# | Grabbing JSON from URL cannot convert string to int

Question

I have a piece of code, which should grab info from a URL. Get the value called lowest_price and then parse it into a variable, but there is a $ sign in the JSON so I had to remove it and after that I can't Parse the JSON correctly.

My code:

var tokenPrice = JObject.Parse(steamMarket).ToString().Replace("$", " ");
double marketPrice = tokenPrice["lowest_price"];

JSON

{"success":true,"lowest_price":"$5.61","volume":"6","median_price":"$5.61"}

Error:

Argument 1: cannot convert from 'string' to 'int'

Possible duplicate of [Problem parsing currency text to decimal type](http://stackoverflow.com/questions/4953037/problem-parsing-currency-text-to-decimal-type) — Cameron, Feb 28 '17 at 15:22

score 3 · Accepted Answer · edited Feb 28 '17 at 15:20

3

double marketPrice = double.Parse(JObject.Parse(steamMarket)["lowest_price"].ToString().Replace("$", ""));

edited Feb 28 '17 at 15:20

Ðаn

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answered Feb 28 '17 at 15:20

Chris

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Tim · Answer 2 · 2017-03-01T16:32:57.143

0

tokenPrice["lowest_price"] is a string and c# will not automatically convert types for you.

var tokenPrice = JObject.Parse(steamMarket);
double marketPrice = double.Parse(tokenPrice["lowest_price"].ToString().Replace("$", ""));

edited Mar 01 '17 at 16:32

answered Feb 28 '17 at 15:21

Tim

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That gives tokenPrice the value of Replace which is a string. You cannot index into a string using a string. It has the same problem as the original code. – Palle Due Feb 28 '17 at 15:39

score 0 · Answer 3 · answered Feb 28 '17 at 15:36

You can also do:

string json = "{\"success\":true,\"lowest_price\":\"$5.61\",\"volume\":\"6\",\"median_price\":\"$5.61\"}";
var jObject = Newtonsoft.Json.Linq.JObject.Parse(json);
double tokenPrice = double.Parse((string )jObject["lowest_price"], NumberStyles.Currency, new CultureInfo("en-US"));

C# | Grabbing JSON from URL cannot convert string to int

3 Answers3