Directly modifying visual properties of RadGridView's elements (rows, cells) is not recommend as it uses container recycling. Thus the modified cell can be reused to display another cellinfo, which would result in inconsistent behavior. In order to achieve this, I would recommend that you use CellStyleSelector
. To force the Selector to get invoked on mouseup, you can add a model property that indicates whether the cell should be colored, and then setting the property and raising ProeprtyChanged for it should do the trick.
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