WebClient is giving exception

Ms_ Dev

9y964Learn iOS Programming

Hi,

WebClient is giving exception. It is not able to get the data in ResultInCSV.

try
{
string ServiceURL = $"http://finance.yahoo.com/d/quotes.csv?s={symbol}&f=sl1d1nd";
string ResultInCSV;
using (WebClient client = new WebClient())
{
ResultInCSV = await client.DownloadStringTaskAsync(ServiceURL).ConfigureAwait(false);
}
var FirstLine = ResultInCSV.Split('\n')[0];
var Price = FirstLine.Split(',')[1];
if (Price != null && Price.Length >= 0)
{
double result;
if (double.TryParse(Price, out result))
{
return result;
}
}
return null;
}
catch (WebException ex)
{
throw ex.InnerException;
}
}

Please help to get the data.

Thanks,

9 Replies

Know the answer? Post it — somebody with the same question will find it here.

Amit Gupta9y ago
Accepted answer
Hey,

I had made some modification in the snippet and attaching the same working example for your reference.

Hope this helps !!
Amit Gupta9y ago
If the same has not been working in your project then you must try to clean and rebuild the project, sometimes thats works too!.

Or you need to share your project to get it resolved.

Good Luck !
Ms_ Dev9y ago
i really appriciate your time to create this application. Things are working absolutely great in your application but although it is the same code, it is giving me still same error.

I seriously dont know what to do rightnow.
Ms_ Dev9y ago
string symbol="msft";

string ServiceURL = $"http://finance.yahoo.com/d/quotes.csv?s={symbol}&f=sl1d1nd";

this is the value.
Amit Gupta9y ago
Please share the value of
string ServiceURL = $"http://finance.yahoo.com/d/quotes.csv?s={symbol}&f=sl1d1nd";
Ms_ Dev9y ago
Hi Amit,

I am not using any proxy or hideip server. This is happening always.
Can you please suggest another way to achieve the results. Although i think i have to change WebClient to something else.

Thanks,
Amit Gupta9y ago
Is this happening always or periodically?

Are you using any proxy or hideIP on your server? Sometimes this also happens with the firewall or antivirus.

Try changing these stuffs. Hence, if all these wouldn't be useful then do upload your project as a zip file. If this much snippet is you are using then share the full value of service URL and let me try at my end
Ms_ Dev9y ago
No. it didn't worked.
I am getiing this error.

{"No connection could be made because the target machine actively refused it 69.147.86.12:80"}

ex.Message

"Unable to connect to the remote server"
Amit Gupta9y ago
Hey

Have you tried using
ResultInCSV = await client.DownloadStringTaskAsync(ServiceURL);

Isn't you got your solution, as I already mentioned in your earlier question.

Do try this and let me know if it solves your problem