</ iframe > </noscript> <!-- End Google Tag Manager (noscript) --> <div id="BeforeHeaderContent"> </div> <div id="HeaderContent"> <div id="ProjectTitle">PDF for WPF and Silverlight</div> <div id="PageTitle"><div id="PageTitleText">Encrypted Files</div></div> </div> <div id="AfterHeaderContent"> <!-- Spacing --> <span id="ToggleAllSectionsLink" class="FunctionLink"> <label id="CollapseAllLabel">Collapse All</label> <label id="ExpandAllLabel" style="display: none;">Expand All</label> </span> </div> <div id="BodyContent"> <p>You can read an encrypted file with <strong>C1PDF</strong> by using a password. This topic provides basic information about passwords for a PDF file as well as how to read and write the encrypted PDF files with <strong>C1PDF</strong>.</p> <p><strong>PDF File passwords</strong></p> <p>The PDF file can be encrypted by up to two passwords: and <strong>owner</strong> and a <strong>user password</strong>.</p> <p>The <strong>owner password</strong> is used to prevent people from doing the following: printing, copying, or modifying text, adding or deleting pages in your PDF file. Once the owner password has been applied you will not be allowed to do the following: printing, content copying, and page extraction.</p> <p>The <strong>user password</strong> is used to prevent people from opening or viewing your PDF.</p> <p>For more information on how to create and write the encrypted file using owner and user passwords see <a href="CreatingandWritingEncryptedFiles.html">Creating and Writing Encrypted Files</a>.</p> <p><strong>Creating a Password Protected File</strong></p> <p>To create a password protected file, use the following code:</p> <p>In the code above the PDF is saved as encrypted once the following condition is met: Either UserPassword or OwnerPassword is set (by default, neither password is set).<br> </p> <p><strong>Opening an Existing PDF File</strong></p> <p>To open an existing PDF file, complete the following:</p> <p><strong>Loading Password Protected PDF Documents</strong></p> <p>To load password protected PDF documents use the <strong>LoadDocument</strong> and <strong>LoadProtectedDocument</strong> methods like the following:</p> <p> </p> <a name="seealsobookmark"></a> </div> <div id="FooterContent"> <p> </p><p> </p><hr style="height: 1px"><p>Copyright © <script type="" text/javascript""=""> var theDate=new Date() document.write(theDate.getFullYear()) </script> GrapeCity, inc. All rights reserved. <script>$(document).ready(function() { if (!(window.self !== window.top)) { // Not running in a frameset // Get the page name var pageName = location.href.substring(location.href.lastIndexOf("/") + 1); if (pageName.indexOf("#") != -1) { pageName = pageName.substring(0, pageName.indexOf("#")); } // Append to webframe.html var framePage = "webframe.html#" + pageName; location.href = framePage; } });</script> </p> <a target="_blank" href="http://our.componentone.com/groups/">Product Support Forum</a> | <a target="_blank" href="http://feedback.componentone.com/forums/272000-wpf-and-silverlight-documentation">Documentation Feedback</a> </div> </body> </html>