[C# JSON] How do I get in

[Skythrust]

Hi there,

I was wondering how I get "temp", "feels_like, "temp_min", "temp_max" out of this JSON string into C#

I would like to use this information in a textbox when I press on a button.

Thanks in advance!

{
    "coord": {
        "lon": 5.14,
        "lat": 51.69
    },
    "weather": [
        {
            "id": 804,
            "main": "Clouds",
            "description": "overcast clouds",
            "icon": "04d"
        }
    ],
    "base": "stations",
    "main": {
        "temp": 11.09,
        "feels_like": 7.3,
        "temp_min": 11,
        "temp_max": 11.11,
        "pressure": 1005,
        "humidity": 87
    },
    "visibility": 10000,
    "wind": {
        "speed": 5.1,
        "deg": 190
    },
    "clouds": {
        "all": 90
    },
    "dt": 1607956782,
    "sys": {
        "type": 1,
        "id": 1531,
        "country": "UK",
        "sunrise": 1607931548,
        "sunset": 1607959773
    },
    "timezone": 3600,
    "id": 2745123,
    "name": "Bristol",
    "cod": 200
}

 

[JayC]

Couple ways you could do this. You could do a JSON serializer, where you convert it into a class object, or you could do a LINQ from a parsed JSON.

So if you wanted to use a LINQ statement:

JObject geographicalJSON = JObject.Parse(json); //json = Your string JSON

double Temperature = (double)geographicalJSON["main"]["temp"];

Or you could make a class structure and have it parse it out for you.

public class GeographicalInfo
{
    public Main Main {get; set;}
}

public class Main
{
    public double Temp;
    public double Feels_Like;
    public double Temp_Min;
    public double Temp_Max;
    public double Pressure;
    public double Humidity;
}

JavaScriptSerializer js = new JavaScriptSerializer();
GeographicalInfo [] geoInfo =  js.Deserialize<GeographicalInfo[]>(geographicalJSON);

 

[Skythrust]

Couple ways you could do this. You could do a JSON serializer, where you convert it into a class object, or you could do a LINQ from a parsed JSON.

So if you wanted to use a LINQ statement:

JObject geographicalJSON = JObject.Parse(json); //json = Your string JSON

double Temperature = (double)geographicalJSON["main"]["temp"];

Or you could make a class structure and have it parse it out for you.

public class GeographicalInfo
{
    public Main Main {get; set;}
}

public class Main
{
    public double Temp;
    public double Feels_Like;
    public double Temp_Min;
    public double Temp_Max;
    public double Pressure;
    public double Humidity;
}

JavaScriptSerializer js = new JavaScriptSerializer();
GeographicalInfo [] geoInfo =  js.Deserialize<GeographicalInfo[]>(geographicalJSON);

Thanks Jay!

I would like to use the one with the class structure. I am getting this message; "System.ArgumentException: 'Invalid JSON Primitive: https.'"

This is my Form code;

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[CosmoPeak]

Thanks Jay!

I would like to use the one with the class structure. I am getting this message; "System.ArgumentException: 'Invalid JSON Primitive: https.'"

This is my Form code;

You must be registered for see links

You need to perform a HTTP request to get the response from that URL

You can see an example here getting a response as a string using HttpClient:

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You would then use your JSON deserialiser, passing in the string response body from your HTTP request as the input, similar to what you have done above.

 

[Skythrust]

You need to perform a HTTP request to get the response from that URL

You can see an example here getting a response as a string using HttpClient:

You must be registered for see links

You would then use your JSON deserialiser, passing in the string response body from your HTTP request as the input, similar to what you have done above to deserialise the JSON into your C# class

Not really sure that I can do something with this information.

Post automatically merged: Dec 15, 2020

By the way... I am using an URL like

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[CosmoPeak]

You'll need to do something like this:

var httpClient = new HttpClient();
var response = await httpClient.GetAsync("https://your-weather-url/");
var responseBody = await response.Content.ReadAsStringAsync();
var serializer = new JavaScriptSeralizer();
var geoInfo = serializer.Deseralize<GeographicalInfo[]>(responseBody);

 

[Skythrust]

You'll need to do something like this:

var httpClient = new HttpClient();
var response = await httpClient.GetAsync("https://your-weather-url/");
var responseBody = await response.Content.ReadAsStringAsync();
var serializer = new JavaScriptSeralizer();
var geoInfo = serializer.Deseralize<GeographicalInfo[]>(responseBody);

But how do I drop this (like the temp (temperature) in textbox?

Sorry I didn't eat that much of C#

 

[CosmoPeak]

But how do I drop this (like the temp (temperature) in textbox?

Sorry I didn't eat that much of C#

I'm not sure what UI framework you're using, so not sure I can help much here. You should be able to access the temp from your object once you've done the above though. It'll be a case of setting the value of the textbox with the temp value.

 

[Skythrust]

I'm not sure what UI framework you're using, so not sure I can help much here. You should be able to access the temp from your object once you've done the above though. It'll be a case of setting the value of the textbox with the temp value.

I am using Forms.