[]
Gets or sets the type of sparkline for the group.
SparkType Type { get; set; }
Property Type As SparkType
worksheet.Range["A1:C1"].Value = new object[] {1, 3, 2};
ISparklineGroup group = worksheet.Range["D1"].SparklineGroups.Add(SparkType.Line, "A1:C1");
SparkType type = group.Type;