problem with get image from html

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Hi on this code i've tried to get images,it give me some image but after that show me this :Object reference not set to an instance of an object.

C#

HtmlAgilityPack.HtmlDocument html_doc = new HtmlAgilityPack.HtmlDocument();
foreach (var i in rssFeed)
{
    //---------------------links----------------------//
    html_doc.LoadHtml(i.Encoded.ToString());
    var link_html = html_doc.DocumentNode.SelectNodes("//a");
    foreach (var link in link_html)
    {
            if (link.Attributes["href"].Value.IndexOf(".jpg") > -1)
            {
                image_links.Add(link.Attributes["href"].Value);
            }
    }

Posted 8-Jul-15 21:20pm

hadi eb

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cybie04 · Accepted Answer · 2015-07-08T21:47:00

Solution 1

Looks like some of the anchor-nodes in link_html do not have "href"-Tags (link.Attributes["href"]). This might generate the NullReferenceException you are getting during the foreach.

Check if Value is set before using it.

C#

String.IsNullOrEmpty(link.Attributes["href"])

for example

Posted 8-Jul-15 21:47pm

cybie04

Updated 8-Jul-15 21:48pm

v2