I have a line graph with 50 points on it but I only want to display a 'point mark' for some items. I can get all the points to show or no points to show, but I have not found a way to get a selected number to show. I have tried setting the .visible property of each individual ChartSeriesItem.PointAppearance that as I add to the series, no luck... I also tried setting the ChartSeriesItem.PointAppearance.Dimensions as well as the ChartSeriesItem.Appearance.PointDimentions but there doesn't seem to be any way to make some points different than others on the same line. Am I missing something?