public string GetXMPMetadata() { string str = ""; PDMetadata metadata = this.pdfDocument.getDocumentCatalog().getMetadata(); if (metadata != null) { try { PDFHelper.DisplayTrialPopupIfNecessary(); str = PDFHelper.convertStreamToString(metadata.exportXMPMetadata()); } catch (java.io.IOException oException) { throw new System.IO.IOException(oException.getMessage()); } } return(str); }