Gets a chart sheet by its name.
A String value that specifies the name of the chart sheet to obtain.
A ChartSheet object that is the chart sheet with the specified name.
Use the Item property to obtain a chart sheet by its name from the workbook's collection of chart sheets. When searching, the name parameter value is compared to the Name property of chart sheet objects. If no matches are found, an exception is thrown. To check whether a chart sheet with the specified name exists in the collection, use the ChartSheetCollection.Contains method.
A chart sheet can be also accessed by its index in the collection.