Apply the License Key

If you haven't get a license key, please check out how to obtain a license key.

ComPDF Conversion SDK currently supports offline authentication to verify license keys.

Learn about:

What is the authentication mechanism of ComPDF's license?

Copy the License Key

Accurately obtaining the license key is crucial for the application of the license.

1. In the email you received, locate the XML file containing the license key.
2. Open the XML file, and determine the license type based on the <type> field. If <type>online</type> is present, it indicates an online license. If <type>offline</type> is present or if the field is absent, it indicates an offline license.

Online License:

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<license version="1">
    <platform>windows</platform>
    <starttime>xxxxxxxx</starttime>
    <endtime>xxxxxxxx</endtime>
    <type>online</type>
    <key>LICENSE_KEY</key>
</license>

Offline License:

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<license version="1">
    <platform>linux</platform>
    <starttime>xxxxxxxx</starttime>
    <endtime>xxxxxxxx</endtime>
    <key>LICENSE_KEY</key>
</license>

3. Copy the value located at the LICENSE_KEY position within the <key>LICENSE_KEY</key> field. This is your license key.

Apply the License Key

You can perform offline authentication using the following method:

Before using the classes and methods of the ComPDF Conversion SDK in your project, you need to initialize the SDK with a valid license key. If you don’t have a license key, feel free to contact the ComPDF team to obtain one.

string license = " input your license string here ";
ErrorCode result = LibraryManager.LicenseVerify(license);