I’ve discovered that Google Base sometimes indicates there are images,
however when I try to display the image it doesn’t exist. I don’t
know if it’s a problem with Base, or if the publisher deleted the
photo. I’ve worked around the problem by first checking if the image
exists. See the code below.
The C# code below transfers the images from GBaseEntry to my "Vehcile"
object. The 'for loop' could use some optimization, and exit when the
web request fails.
if (entry.GBaseAttributes.GetUrlAttributes("image link").GetLength
(0) > 0)
{
foreach (string imageLink in
entry.GBaseAttributes.GetUrlAttributes("image link"))
{
vehicle.SmallImageLink.Add(imageLink);
vehicle.ImageCount++;
if (vehicle.primarySmallImage == "~/Images/NoPhoto.gif")
vehicle.primarySmallImage = imageLink;
//get the primary small image link
if (imageLink.Length < vehicle.primarySmallImage.Length)
{
vehicle.primarySmallImage = imageLink;
}
}
try
{
// Creates an HttpWebRequest for the specified URL.
HttpWebRequest myReq = (HttpWebRequest)WebRequest.Create
(vehicle.primarySmallImage);
// Sends the HttpWebRequest and waits for a response.
HttpWebResponse myHttpWebResponse = (HttpWebResponse)
myReq.GetResponse();
if (myHttpWebResponse.StatusCode != HttpStatusCode.OK)
{
vehicle.ImageCount = 0;
vehicle.primarySmallImage = "~/Images/NoPhoto.gif";
}
}
catch (Exception)
{
vehicle.ImageCount = 0;
vehicle.primarySmallImage = "~/Images/NoPhoto.gif";
}
}
www.fecfs.com
On Nov 26, 4:39 pm, "Nicolas (Google)" <[EMAIL PROTECTED]> wrote:
> Hi Dennis,
>
> Unfortunately there is currently a bug on the "image_link" attribute.
> The issues have already been reported and we are waiting for a fix
> from our engineering team.
>
> For your information, I think the correct Query URI would
> be:http://www.google.com/base/feeds/snippets/-/vehicles?bq=[year:2006][price%3C15000%20usd][vehicle_type:Sedan][image%20link]
>
> But as you can imagine I can't test this right now :)
>
> In the mean time, as a workaround I would recommend downloading the
> query result without filtering on the image_link attribute :
>
> http://www.google.com/base/feeds/snippets/-/vehicles?bq=[year:2006][price%3C15000%20usd][vehicle_type:Sedan]
> and then filtering the search result programmatically.
>
> Cheers,
> Nicolas
>
> On Nov 26, 5:46 pm, Dennis123 <[EMAIL PROTECTED]> wrote:
>
>
>
> > I would like to do a query that only shows cars with a photo, without
> > having to manually sort thru them
>
> > So I pretty much want to do something like
> > this..http://www.google.com/base/feeds/snippets/-/vehicles?bq=[year:2006][price%3C15000%20usd][vehicle_type:Sedan][image_link!=null]
>
> > Any ideas?
>
> > Thanks much!
> > Dennis- Hide quoted text -
>
> - Show quoted text -
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