Hi, I'm currently testing your Listbox and I need to wrap grouped ListBoxItems under the belonging GroupHeader. Is this possible?

Here is a screenshot of the project... The ListboxItems should use the white space left and right:

http://www.bilderload.com/bild/172419/currentP9MQE.jpg

Hi Alexander,

Are you able to send me a small self-contained sample application so that I can investigate this matter further? With this information, I will be able to provide you with a possible answer to your concern. I do have 1 question for you. What type of panel are you placing in your ItemTemplate?  As for the sample application, you can either send it to support@xceed.com with a reference to this forum post, or you can attach it to this forum thread. In order to attach a file, you can click on reply, then choose the 'Options' tab. From there, you can attach files to a forum post.