C#•3y ago

❔ How to convert object type to double. Pls help me

        [Route("/")]
        public async Task<IActionResult> Index()
        {
            string stockSymbol = _options.DefaultStockSymbol;

            if (string.IsNullOrEmpty(stockSymbol))
            {
                stockSymbol = "MSFT";
            }


            Dictionary<string, object> profile = await finnhubService.GetCompanyProfile(stockSymbol); //returns json data
            Dictionary<string, object> price = await _finnhubService.GetStockPriceQuote(stockSymbol);

            StockTrade stockTrade = new StockTrade
            {
                StockSymbol = stockSymbol,
                StockName = profile.ContainsKey("name") ? profile["name"].ToString() : null,
                //Price = price.ContainsKey("c") ? price["c"].GetDouble() : 0.0

        };

            return View(stockTrade);
        }

        [Route("/")]
        public async Task<IActionResult> Index()
        {
            string stockSymbol = _options.DefaultStockSymbol;

            if (string.IsNullOrEmpty(stockSymbol))
            {
                stockSymbol = "MSFT";
            }


            Dictionary<string, object> profile = await finnhubService.GetCompanyProfile(stockSymbol); //returns json data
            Dictionary<string, object> price = await _finnhubService.GetStockPriceQuote(stockSymbol);

            StockTrade stockTrade = new StockTrade
            {
                StockSymbol = stockSymbol,
                StockName = profile.ContainsKey("name") ? profile["name"].ToString() : null,
                //Price = price.ContainsKey("c") ? price["c"].GetDouble() : 0.0

        };

            return View(stockTrade);
        }

        [Route("/")]
        public async Task<IActionResult> Index()
        {
            string stockSymbol = _options.DefaultStockSymbol;

            if (string.IsNullOrEmpty(stockSymbol))
            {
                stockSymbol = "MSFT";
            }


            Dictionary<string, object> profile = await finnhubService.GetCompanyProfile(stockSymbol); //returns json data
            Dictionary<string, object> price = await _finnhubService.GetStockPriceQuote(stockSymbol);

            StockTrade stockTrade = new StockTrade
            {
                StockSymbol = stockSymbol,
                StockName = profile.ContainsKey("name") ? profile["name"].ToString() : null,
                //Price = price.ContainsKey("c") ? price["c"].GetDouble() : 0.0

        };

            return View(stockTrade);
        }

        [Route("/")]
        public async Task<IActionResult> Index()
        {
            string stockSymbol = _options.DefaultStockSymbol;

            if (string.IsNullOrEmpty(stockSymbol))
            {
                stockSymbol = "MSFT";
            }


            Dictionary<string, object> profile = await finnhubService.GetCompanyProfile(stockSymbol); //returns json data
            Dictionary<string, object> price = await _finnhubService.GetStockPriceQuote(stockSymbol);

            StockTrade stockTrade = new StockTrade
            {
                StockSymbol = stockSymbol,
                StockName = profile.ContainsKey("name") ? profile["name"].ToString() : null,
                //Price = price.ContainsKey("c") ? price["c"].GetDouble() : 0.0

        };

            return View(stockTrade);
        }

In this example from controller, i get value of price as dictionary type and it has many values from external API . The first one is {[c, ValueKind = Number : "246.27"]} which i want to get that double number (246.27) and assign it to my Price variable. You see that I commented that line because it gives error. Is there any other way to achieve this?

Angius•3/1/23, 9:12 PM

Well,

object

object

doesn't have a method GetDouble()GetDouble(), so

Angius•3/1/23, 9:12 PM

Also, why Dictionary<string, object>Dictionary<string, object>?

Angius•3/1/23, 9:12 PM

It seems like you're getting properly structured data, but here you go discarding the type system

point9408OP•3/1/23, 9:12 PM

It's just a part of assignment

Angius•3/1/23, 9:12 PM

Ah, so a garbage professor teaching garbage practices

point9408OP•3/1/23, 9:12 PM

point9408OP•3/1/23, 9:13 PM

what can be an alternative way to achieve this?

Angius•3/1/23, 9:13 PM

A class

Angius•3/1/23, 9:13 PM

A good and proper class

Angius•3/1/23, 9:13 PM

If you get JSON data from somewhere, deserialize it to a class

point9408OP•3/1/23, 9:14 PM

I already did in Service folder and I implement that method in controller

Angius•3/1/23, 9:15 PM

Yeah, deserializing to a dictionary is where the bad code starts

Angius•3/1/23, 9:15 PM

Deserialize to a class

point9408OP•3/1/23, 9:15 PM

Oh, okay. I will try it

Angius•3/1/23, 9:16 PM

$jsongen

AAngius $jsongen

MODiX•3/1/23, 9:16 PM

Use https://app.quicktype.io or https://json2csharp.com to generate classes from your JSON

Instantly parse JSON in any language | quicktype

Whether you're using C#, Swift, TypeScript, Go, C++ or other languages, quicktype generates models and helper code for quickly and safely reading JSON in your apps. Customize online with advanced options, or download a command-line tool.

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Angius•3/1/23, 9:16 PM

You can even take the JSON you get from the API and just generate those classes

Angius•3/1/23, 9:16 PM

Or you can write them by hand, sure

point9408OP•3/1/23, 9:17 PM

Thank you so much

Accord•3/2/23, 9:44 PM

Was this issue resolved? If so, run

/close

/close

otherwise I will mark this as stale and this post will be archived until there is new activity.

❔ How to convert object type to double. Pls help me

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