public static void AddLicenseData( string licenseKey )
Public Shared Sub AddLicenseData ( licenseKey As String )
You can use this method multiple times if you have several licenses which you use in one code base (usually, it's the case for a server application running on multiple servers).
We recommend adding all license data at the start of your application. It is not recommended to call this method each time before you create a PdfDocument instance.
In classic ASP.NET apps we recommended adding license data in Global.asax.cs. In ASP.NET Core apps we recommend using Program.cs for the same.
You can use HasValidLicense property in any part of your app to make sure a license is applied and is valid.