Some test text!
PDFTron SDK for .NET is a true .NET component and can be used by any .NET language (e.g. C#, VB.NET, etc). The assembly doesn't use PInvoke or COM interop and does not require/depend on other unmanaged non-system components. At the same, PDFNet for .NET, is a 'mixed' component and is not 'verifiable' since it has some native dependencies (e.g. for printer driver support, XPS printing, GDI, efficient image libs, COM interop etc - these features are by definition impossible to do in 'verifiable' .NET components).
'Any CPU' selection means different things in different versions of Visual Studio, however you can definitely make an 'AnyCPU' configuration and make the app work correctly on both x86, x64, and other platforms. The issue is not PDFNet specific any there are many solutions:
Error: error LNK2019: unresolved external symbol __imp__TRN_PDFNetInitialize.
Solution: You probably have mixed up the 32bit and 64bit versions of PDFNetC. Make sure that the DLL architecture matches the project platform setting.
Error: The application was unable to start correctly.
Solution: Same as above, but at runtime you have the wrong PDFNetC.dll being loaded.
Error: warning MSB3270: There was a mismatch between the processor architecture of the project being built.
Solution: The architecture of the PDFNet dll and your project do not match. Either both the DLL, and project, should be x64, or x86. Don't mix and match. If using AnyCPU, it is not recommended for use with PDFNet as this can result in errors in some cases. Please see above for details.
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