Question

I am working on csv downloader project ,i need to download the CSV files generated on the webpage . and using html agility , i found the exact link that contain the link for csv file

<a href="/content/fo/contractvol/datafiles/OPTIDX_NIFTY_CE_31-08-2012_TO_31-08-2012.csv" target="_blank">Download file in csv format</a>

now i want , without any activity from my side , the application must detect this link in the web page ( i could do it by Htmlagility ) and should download the file once the web page fully navigated in Web browser in my app. I tried some example in one of the SO click here post but getting

Error :Object reference not set to an instance of an object.

HtmlElementCollection links = webBrowser.Document.GetElementsByTagName("A");

foreach (HtmlElement link in links)  // this ex is given another SO post 
{
    if (link.InnerText.Equals("My Assigned"))
        link.InvokeMember("Click");
}

Can any body suggest how to do it ??

Solved :

I changed to HtmlElementCollection links = webBrowser.Document.GetElementsByTagName("A"); to HtmlElementCollection links = webBrowser1.Document.Links and used

 if (link.InnerText.Contains("My Assigned"))
{
        link.InvokeMember("Click");
}

. any one who better solution?

Answer 1

InnerText might be null so build in a safeguard, to check for null:

if ((link.InnerText != null) && (link.InnerText.Equals("My Assigned")) )
        link.InvokeMember("Click");