[]
Gets or sets whether the tick label number format is linked to the source cells.
If this property is true, changes to the number format in the source cells
are reflected in the axis tick labels.
bool NumberFormatLinked { get; set; }
Property NumberFormatLinked As Boolean
worksheet.Range["A1:B4"].Value = new object[,] {
{"Month", "Sales"},
{"Jan", 1200},
{"Feb", 1500},
{"Mar", 1100}
};
IChart chart = worksheet.Shapes.AddChart(ChartType.ColumnClustered, 20, 20, 360, 220).Chart;
chart.SeriesCollection.Add(worksheet.Range["A1:B4"]);
IAxis axis = chart.Axes.Item(AxisType.Category, AxisGroup.Primary);
axis.TickLabels.NumberFormatLinked = false;
bool linked = axis.TickLabels.NumberFormatLinked;