c# - I am downloading a link from nseindia site using my program but now I cant do it there is a error 403? -

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i downloading file nseindia site using program there error 403(forbidden)(page not found). value same site using code

webclient client = new webclient(); client.headers.add("user-agent", "mozilla/5.0 (compatible; msie 9.0; windows nt 6.1; wow64; trident/5.0)");  stream data; try {     data = client.openread("http://www.nseindia.com/"); } catch (exception e) {     messagebox.show("error: " + e.message + e.data + e.helplink);     return ""; } streamreader reader = new streamreader(data); string s = null; int count = 0; while (reader.read()>0) {     s = reader.readline();     if (s.contains("<td class=\"t1\">"))     {         messagebox.show("line: " + s);        s= s.remove(0, 18);        s = s.remove(s.length - 5);        count++;        if (count == 5)            break;     }  }  data.close(); reader.close(); return s;

it seems site requires accept http request header:

client.headers[httprequestheader.accept] = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";

one of problems encounter doing totally dependent on how site trying scrape works. not mention fragility of html parsing code. worse change anytime , have no control unless own site. tomorrow site might start requiring other http header , code stop working once again. saying prepared.

maybe contact site owners , see if offering official api consume content.


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