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Deletes the chart title object.
Use this method to remove the title from the chart.
void Delete()
Sub Delete()
worksheet.Range["A1:B4"].Value = new object[,] { { "Month", "Sales" }, { "Jan", 12 }, { "Feb", 18 }, { "Mar", 15 } };
IChart chart = worksheet.Shapes.AddChart(ChartType.ColumnClustered, 20, 20, 300, 200).Chart;
chart.SeriesCollection.Add(worksheet.Range["A1:B4"]);
chart.HasTitle = true;
chart.ChartTitle.Text = "Sales Analysis";
IChartTitle title = chart.ChartTitle;
title.Delete();