public void ConvertFrom(IEnumerable <ISheetGenerator> obj)
{
var sheets = obj == null?Enumerable.Empty <Sheet>() : obj.OfType <Sheet>();
if (sheets != null)
{
this.Sheets.Clear();
foreach (var sheet in sheets)
{
var sheetBinder = new SheetBinder();
sheetBinder.ConvertFrom(sheet);
this.Sheets.Add(sheetBinder);
}
}
}
internal void RemoveSheet(SheetBinder sheet)
{
this.Sheets.Remove(sheet);
}
internal void AddSheet()
{
var sheet = new SheetBinder(this.sheetNumber++);
this.Sheets.Add(sheet);
}