Hi Johnny,
thinks for your replay ,"Add contextMenu I on the map of the highlightlayer, how to change the hightOverlayer is selected for feature color in the trigger ContextMenu menuItem click event",This problem has been to reply, but no solution ,because If this.map.HighlightOverlay has a Feature so that it can be ,if there is more than one Feature will turn red all,I only want to change the selected Feature instead of all.