Convert Currency ( Get Conversion Rates ) Rupee INR to Dollar USD

It can be done using Google Currency API

    protected void Page_Load(object sender, EventArgs e)
    {
        System.Net.WebClient client = new System.Net.WebClient();
        string rates = client.DownloadString("http://rate-exchange.appspot.com/currency?from=INR&to=USD");
        Rate rate = new System.Web.Script.Serialization.JavaScriptSerializer().Deserialize<Rate>(rates);
        double inr = 100;
        double usd = inr * rate.rate;
    }

    public class Rate
    {
        public string to { get; set; }
        public string from { get; set; }
        public double rate { get; set; }
    }

Sir,

In above code at line 5 on System.Web.Script.Serialization.JavaScriptSerializer showing error as "Type System.Web.Script.Serialization.JavaScriptSerializer is not defined."

It requires .Net 3.5 SP1 or above without that it won't work. And if using 2.0 you need to install ASP.Net AJAX Extensions