How to: Move a Chart to a Chart Sheet
The following example demonstrates how to move an existing chart from a worksheet to a separate chart sheet. To do this, call the ChartObject.MoveToNewChartSheet method for a chart you wish to move.
To transfer a chart back to the worksheet containing the source data, use the ChartObject.MoveToWorksheet method.
// Create an embedded chart on the worksheet.
Chart chart = worksheet.Charts.Add(ChartType.Pie, worksheet["B2:C7"]);
chart.TopLeftCell = worksheet.Cells["E2"];
chart.BottomRightCell = worksheet.Cells["K15"];
// Move the chart to a chart sheet.
ChartSheet chartSheet = chart.MoveToNewChartSheet("Chart");