CODEWITHSUNDEEP
c#winforms
gsvirdi
gsvirdi

Reputation: 426

Fetch currency rate in C# Winform

I have a very simple sounding winform task in my book. Using windows form. Fetch the latest currency rate in the text box. 

1 USD = ??? INR

best solution to display converted currency I thought was to use Process method with a query string...

http://www.xe.com/ucc/convert.cgi?Amount=" + costTextBox.Text.ToString() + "&From=USD&To=INR"

But how to get and separate the value into the text box?

Upvotes: 3

Views: 3368

Answers (3)

NoviceProgrammer
NoviceProgrammer

Reputation: 3365

Instead of trying to scrap the value from the response from xe.com i would suggest to either purchase their services from here or use this free webservice

  1. Add the wsdl as a service reference.
  2. Create the SoapClient
  3. Call the ConversionRate method.

var result = client.ConversionRate(CurrencyConverterService.Currency.USD,
                                   CurrencyConverterService.Currency.INR);

Upvotes: 4

Adam
Adam

Reputation: 26917

You can do this with Yahoo currency converter:

This method will give you current rate:

    decimal getCurrencyRate(string currFrom, string currTo)
    {
        decimal result;
        using (WebClient c = new WebClient())
        {
            string data = c.DownloadString(string.Format("http://download.finance.yahoo.com/d/quotes.csv?s={0}{1}=X&f=sl1d1t1ba&e=.csv", currFrom, currTo));
            string rate = data.Split(',')[1];
            var style = NumberStyles.Number;
            var culture = CultureInfo.CreateSpecificCulture("en-US");
            decimal.TryParse(rate, style, culture, out result);
        }
        return result;
    }

And you use this way:

        //convert $50 to INR
        decimal val = 50.0M;
        //get rate
        decimal rate = getCurrencyRate("USD", "INR");
        //calculate value in INR
        decimal inrVal = val * rate;

Upvotes: 1

aleroot
aleroot

Reputation: 72646

Take a look at the Google Finance API, see the following function : 

public static decimal Convert(decimal amount, string from, string to)
        {
            WebClient web = new WebClient();

            string url = string.Format("http://www.google.com/ig/calculator?hl=en&q={0}{1}=?{2}", amount, from.ToUpper(), to.ToUpper());

            string response = web.DownloadString(url);

            Regex regex = new Regex("rhs: \\\"(\\d*.\\d*)");
            Match match = regex.Match(response);

            return System.Convert.ToDecimal(match.Groups[1].Value);
        }

Then you can use the function in this way : 

decimal converted = Convert(3.25, "USD", "EUR");

Upvotes: 2

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