Setting License Key in Web.config
This problem has been solved since IronPDF version 2024.3.3.
Exception: Unhandled exception. IronSoftware.Exceptions.LicensingException: IronPDF must be licensed for development.For older IronPDF versions, specifically those between versions 2023.4.4 and 2024.3.3, there is a known licensing issue in:
- ASP.NET projects
- .NET Framework version >= 4.6.2
The key stored in a Web.config file will NOT be picked up and used by the product.
Workaround
To address this issue, it is recommended to retrieve the license key from the Web.config file using ConfigurationManager in the code, and then apply it to the License.LicenseKey property.
Example:
<configuration>
...
<appSettings>
<add key="IronPdf.LicenseKey" value="IRONPDF-MYLICENSE-KEY-1EF01"/>
</appSettings>
...
</configuration>With the XML file provided above, we can use ConfigurationManager to retrieve the license key value and pass it to the IronPdf.License.LicenseKey property.
using System.Configuration;
class Program
{
static void Main()
{
// Retrieve the license key from the Web.config file
string licenseKey = ConfigurationManager.AppSettings["IronPdf.LicenseKey"];
// Apply the license key to the IronPdf library
IronPdf.License.LicenseKey = licenseKey;
// Additional processing can continue here
}
}Imports System.Configuration
Class Program
Shared Sub Main()
' Retrieve the license key from the Web.config file
Dim licenseKey As String = ConfigurationManager.AppSettings("IronPdf.LicenseKey")
' Apply the license key to the IronPdf library
IronPdf.License.LicenseKey = licenseKey
' Additional processing can continue here
End Sub
End Class
Curtis Chau holds a Bachelor’s degree in Computer Science (Carleton University) and specializes in front-end development with expertise in Node.js, TypeScript, JavaScript, and React. Passionate about crafting intuitive and aesthetically pleasing user interfaces, Curtis enjoys working with modern frameworks and creating well-structured, visually appealing manuals.
