How to display a line in a listbox depending on the date value of the previous and next binded items?

I have a listbox with binded items. The items come from a collection, and have a date as a property.

I would like to display a line between two items of the listbox if the difference between their date is superior to 12 hours.

I don't know how to handle the fact that the code should look at 2 items in the collection and compare the values to display or not display the line.

I am a beginner so detai开发者_JAVA百科ls will be apreciated :) Many thanks for your help. Best, Arthur

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Well, you don't have the ability to see what the next item is directly from XAML, so what you can do, is to calculate it in code, and insert a different element that denotes there to be a line.

Then you can use a DataTemplateSelector to allowing you to have different data-templates based on a condition (like a boolean "IsLine").