[]
Gets or sets the range that contains the source data for a single sparkline.
string SourceData { get; set; }
Property SourceData As String
worksheet.Range["A1:C1"].Value = new object[] {1, 3, 2};
ISparklineGroup group = worksheet.Range["D1"].SparklineGroups.Add(SparkType.Line, "A1:C1");
ISparkline sparkline = group[0];
string sourceData = sparkline.SourceData;