CODEWITHSUNDEEP
c#.nethtml-agility-pack
argoneus
argoneus

Reputation: 1147

XPath parsing gives me an error

I'm trying to get the first image from this site but I keep getting an error and can't quite figure out why..

Here's the code:

string pictureurl = webdoc.DocumentNode.SelectSingleNode("//div[2]/table[1]/tr/td/a").Attributes["href"].Value;

and the error is Object reference not set to an instance of an object.

Can anyone please tell me why? if I remove the above line it works fine..

Upvotes: 0

Views: 99

Answers (3)

freefaller
freefaller

Reputation: 19953

Double check through the debugger that the following actually returns something...

webdoc.DocumentNode.SelectSingleNode("//div[2]/table[1]/tr/td/a");

My guess is not, and instead use the following (note the extra tbody)..

webdoc.DocumentNode.SelectSingleNode("//div[2]/table[1]/tbody/tr/td/a");

Upvotes: 1

HatSoft
HatSoft

Reputation: 11191

Your xpath is not correct to get a img

please use this way

string pictureurl = 
webdoc.DocumentNode
.SelectSingleNode("//div[2]/table[1]/tr/td/a/img")
.Attributes["src"].Value;

Upvotes: 1

Arne
Arne

Reputation: 2146

Use //div[2]/table[1]/tbody/tr/td/a. Depending on the configuration settings HtmlAgilityPack inserts a tbody element.

Upvotes: 1

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