I use the statement below to turn on the alarm highlighting. this.ChartAlarmEmphasisMode = SPCChartBase.ALARM_HIGHLIGHT_SYMBOL;
After that only the last data point whom break the WERule was highlighted. Suppose the broken rule was WE rule 4(Eight out of the last eight points plot on the same side of the center line),if there is a way let me make the 8 data points are all highlighted?