public void TestAddingSheetRecord()
{
byte[] wbBytes = TestHelpers.GetTemplateMacroBytes();
WorkbookStream wbs = new WorkbookStream(wbBytes);
BoundSheet8 bs8 = new BoundSheet8(BoundSheet8.HiddenState.Visible, BoundSheet8.SheetType.Macrosheet, "MyMacroSheet");
BoundSheet8 correctOffsetBs8 = ((BiffRecord)bs8.Clone()).AsRecordType <BoundSheet8>();
BoundSheet8 oldSheetRecord = wbs.GetAllRecordsByType <BoundSheet8>().First();
BoundSheet8 newSheetRecord = ((BiffRecord)oldSheetRecord.Clone()).AsRecordType <BoundSheet8>();
// bs8.lbPlyPos = (uint) (oldSheetRecord.lbPlyPos + bs8.GetBytes().Length);
List <BOF> bofRecords = wbs.GetAllRecordsByType <BOF>();
BOF spreadSheetBOF = bofRecords.Last();
// newSheetRecord.lbPlyPos = bs8.lbPlyPos;
long offset = wbs.GetRecordByteOffset(spreadSheetBOF);
bs8.lbPlyPos = oldSheetRecord.lbPlyPos;
wbs = wbs.InsertRecord(bs8, oldSheetRecord);
offset = wbs.GetRecordByteOffset(spreadSheetBOF);
correctOffsetBs8.lbPlyPos = (uint)offset;
newSheetRecord.lbPlyPos = (uint)offset;
wbs = wbs.ReplaceRecord(bs8, correctOffsetBs8);
wbs = wbs.ReplaceRecord(oldSheetRecord, newSheetRecord);
ExcelDocWriter writer = new ExcelDocWriter();
writer.WriteDocument(TestHelpers.AssemblyDirectory + Path.DirectorySeparatorChar + "testbook.xls", wbs.ToBytes());
}