ChartSheet Host Item
The ChartSheet host item is a worksheet in Excel that contains only a chart and exposes events.
Applies to: The information in this topic applies to document-level projects for Excel 2007 and Excel 2010. For more information, see Features Available by Office Application and Project Type.
When you add a chart sheet at design time as a new sheet in your Microsoft Office Excel document-level customization project, Visual Studio automatically creates a ChartSheet host item.
Although a ChartSheet host item is a worksheet in Excel, you cannot add any controls to the chart sheet. If you want to have other controls on a worksheet with a chart, do not use a chart sheet. Instead, you can place a chart as an embedded object on a worksheet by using the Chart host control. For more information, see Chart Control.