[]
Gets the ITextFrame object that contains the text and font style properties of the data label.
ITextFrame TextFrame { get; }
ReadOnly Property TextFrame As ITextFrame
worksheet.Range["A1:B3"].Value = new object[,] {
{"Month", "Sales"},
{"Jan", 10},
{"Feb", 20}
};
IChart chart = worksheet.Shapes.AddChart(ChartType.ColumnClustered, 20, 20, 300, 200).Chart;
chart.SeriesCollection.Add(worksheet.Range["A1:B3"], RowCol.Columns);
ISeries series = chart.SeriesCollection[0];
series.HasDataLabels = true;
IDataLabel dataLabel = series.Points[0].DataLabel;
ITextFrame textFrame = dataLabel.TextFrame;
textFrame.TextRange.Text = "Jan: 10";