- C# Print document | Code Sample | Tall Components PDF C# samples
- Change colors of black-and-white TIFF after converting from PDF
- Convert multiple PDF pages to bitmap
- Convert PDF to an image using a dither matrix
- Convert PDF to JPG in C#
- Convert PDF to multipage TIFF in C# .NET
- Convert PDF to PNG using WPF
- Convert PDF to XPS
- Convert PDF with layers to image
- Display PDF in a WPF app and stay responsive - the code
- Font mapping
- PDF to grayscale TIFF C#
- C# Print PDF documents from a WPF application
- Render a PDF to bitmap
- Render PDF with ResolveFont event handler
- Render PDF to EMF
- Use multiple licenses
- How to use a system font for rendering text
Use multiple licenses
This code sample explains how to register multiple license keys with a single application.
Here is the web.config that includes a single license key for a pdfkit4 Server license:
<configuration>
<appSettings>
<add key="PDFKit.NET 4.0 Server Key" value="7206:JUm8jYm-4bwE84gi8RtQuk++" />
</appSettings>
</configuration>
Now suppose that this web.config file is part of a project that is used to deploy to two different servers. In that case, it is possible to add a second key to the same web.config. Because a config file behaves like a dictionary, you must make the key attribute unique by adding a postfix. Our licensing code only checks if the key attribute starts with the expected string so the postfix may be anything. It will check all licenses until verification succeeds.
Here is the web.config file with the second key added:
<configuration>
<appSettings>
<add key="PDFKit.NET 4.0 Server Key SVR001" value="7206:JUm8jYm-4bwE84gi8RtQuk++" />
<add key="PDFKit.NET 4.0 Server Key SVR002" value="3070:5RwUiW1lHWFEcteNiQFTy+++" />
</appSettings>
</configuration>
Note the postfix of the key attribute. Although it can be anything, it is recommended to use something that makes sense.