Is there a way to extract data daily from barchart.com, specifically the close/open/high prices? I can't find the values in the page code or the JavaScript script that loads it. Maybe downloading the Excel file using the "download" button is easier, but I can't locate the download link either as it seems to be processed by a script. I'm working with C#, so any suggestions or tips would be greatly appreciated. Thanks.
If you inspect the network tab in your browser's developer tools, you'll uncover the URL used for fetching the data. You can simply make a direct call to that URL and manipulate the data as needed. While I'm showcasing a jQuery example here (using the snippet tool), executing this from C# is straightforward with the WebClient.DownloadString() method.
var url = 'https://core-api.barchart.com/v1/quotes/get?fields=symbol%2CcontractName%2ClastPrice%2CpriceChange%2CopenPrice%2ChighPrice%2ClowPrice%2CpreviousPrice%2Cvolume%2CopenInterest%2CtradeTime%2CsymbolCode%2CsymbolType%2ChasOptions&list=futures.contractInRoot&root=HG&meta=field.shortName%2Cfield.description&hasOptions=true&raw=1';
$('#data').load(url);<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
Data: <br />
<textarea id="data" cols="50" rows="8"></textarea>C# example:
public static void DownloadString(string address)
{
WebClient client = new WebClient();
string response = client.DownloadString(address);
Console.WriteLine(response);
return response;
}
var url = 'https://core-api.barchart.com/v1/quotes/get?fields=symbol%2CcontractName%2ClastPrice%2CpriceChange%2CopenPrice%2ChighPrice%2ClowPrice%2CpreviousPrice%2Cvolume%2CopenInterest%2CtradeTime%2CsymbolCode%2CsymbolType%2ChasOptions&list=futures.contractInRoot&root=HG&meta=field.shortName%2Cfield.description&hasOptions=true&raw=1';
var data = DownloadString(url);
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