change listview cell foreground color, based on the value of the previous row

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VB

WPF

How can i change the foreground color of a WPF listview cell,based on the cell value of the previous row in the same column.

For example :

row 1 contains cells {AA} {BB} {CC}
row 2 contains cells {AA} {BB} {DD}

I want now that on my listview in row 2 the first 2 items have the same color as the background (because they have the same value like the first 2 items in row 1)

The listview items are bound to a datatable.

Can someone points me to the right direction ?