Sys.InvalidOperationExcepetion: Image error #4001 in control 'Silverlight': AG_E_NETWORK_ERROR - RSS Feed

07-03-2009 4:59 AM |

Hi all.

I am having trouble catching an image related error within Silverlight.

I am currently using an RSS feed for news.  Each news story (item) contains a thumbnail (itemthumbnail).

 The majority of these images are displayed correctly.

However, a small number of these images are not displayed correctly and I encounter the following error

Sys.InvalidOperationExcepetion: Image error #4001 in control 'Silverlight': AG_E_NETWORK_ERROR

I have noticed that I sometimes get this error even if the source of the images is valid.

I parse the RSS using LINQ (see the code below)

        Dim rssItems = From rssItem In xmlStories.Descendants("item") _
    Where rssItem.Element("title") IsNot Nothing Take 8 _
   Select New MySilverlight.RSSItem With _
   {.title = (CStr(rssItem.Element("title")).ToUpper).Trim() _
    , .description = (Left(CStr((rssItem.Element("description"))).ToUpper, 150)) _
    , .pubDate = (CDate(rssItem.Element("pubDate"))) _
    , .category = (CStr(rssItem.Element("category"))).Trim() _
     , .itemthumbnail = IIf(IsNothing(CStr(rssItem.Element("itemthumbnail"))), "../Images/noimage.png", IIf(Right(CStr((rssItem.Element("itemthumbnail"))), 3) = "gif", "../Images/noimage.png", (CStr(rssItem.Element("itemthumbnail")))).Trim()) _
    }

The itemthumbnail data is always correctly passed to the RSSItem object.  I have already excluded the images that are GIF format and those where itemthumbnail is empty,

Does anyone know what could be causing this error.

Is it possible to put a TRY CATCH within this line?

 , .itemthumbnail = IIf(IsNothing(CStr(rssItem.Element("itemthumbnail"))), "../Images/noimage.png", IIf(Right(CStr((rssItem.Element("itemthumbnail"))), 3) = "gif", "../Images/noimage.png", (CStr(rssItem.Element("itemthumbnail")))).Trim()) _

Any help would be grately appreciated.

Re: Sys.InvalidOperationExcepetion: Image error #4001 in control 'Silverlight': AG_E_NETWORK_ERROR - RSS Feed

07-03-2009 5:22 AM |

what if the format is other than Gif?

Re: Sys.InvalidOperationExcepetion: Image error #4001 in control 'Silverlight': AG_E_NETWORK_ERROR - RSS Feed

07-03-2009 5:35 AM |

All the other images are .JPG format.

Re: Sys.InvalidOperationExcepetion: Image error #4001 in control 'Silverlight': AG_E_NETWORK_ERROR - RSS Feed

07-07-2009 5:42 AM |

 Hi,

The error code 4001 means the request source does not exist.  So we would suggest that you can try to check if the path that you referenced the image is correct.