IXlsWorksheetExportOptions

COM interface ( getting help with interfaces )

interface IXlsWorksheetExportOptions : IDispatch
{
  [id(1), propput] HRESULT UrlPrefix([in]BSTR urlPrefix);
}

HRESULT UrlPrefix([in]BSTR urlPrefix);
sets the url prefix used for exporting resources (such as images) in the Html export.