Rank: Newbie
Groups: Member
Joined: 5/18/2009
Posts: 2
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My customer has a problem with an application we supplied that uses a Treeview. The Treeview uses default images and has no special formatting. Normally it works fine but sometimes, and this is more frequent when the website is accessed over SSL, the + image fails to display with the browser replacing it with the missing image placeholder. Watching the interaction between the client and server using Fiddler does not reveal any HTTP errors.
Has anyone any ideas what might be going wrong?
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Rank: Administration
Groups: Administration
Joined: 5/27/2007
Posts: 24,194
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Hi,
You may want to try to use physical image files. By default the TreeView uses "built-in" images that are rendered directly from the DLL through a HttpHandler. All the handlers have the same file name but with different argument lists. Sometimes the long argument lists would trigger certain Url blocking plug-ins.
To use physical image files, you would simply editing the corresponding property and give it a real image name. To edit the TreeView line images, you would edit the TreeView.LineImages.Urls property (this is a list of Urls, you will need to click the "..." next to the property to edit each of them.
You can find all image files we use in a file Images.zip in the installation folder.
Thanks!
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Rank: Newbie
Groups: Member
Joined: 5/18/2009
Posts: 2
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Hi
Thanks for the suggestion. I have some doubts as to whether this will change the behaviour because I don't believe our test environment performs any url checking, however it is worth a try.
Thanks
Bob
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