削除
[列の削除]
xlRange = (Range^)ws->Columns["A:A", System::Type::Missing];
xlRange->Delete(System::Type::Missing);

System::Runtime::InteropServices::Marshal::ReleaseComObject(xlRange);


[行の削除]
xlRange = (Range^)ws->Rows["1:1", System::Type::Missing];
xlRange->Delete(System::Type::Missing);

System::Runtime::InteropServices::Marshal::ReleaseComObject(xlRange);