Error adding freespire.pdf in a project with docviewer

[maxsch]

Hi,
I have this issue: If I add by nuget (in VisualStudio) the freespire.pdf in a project where is installed freespire.docviewer, I get this error : Non è stato possibile caricare il tipo 'spr⠓' dall'assembly 'Spire.Doc, Version=7.1.7.4040, Culture=neutral, PublicKeyToken=663f351905198cb3' perché prova a implementare una classe come interfaccia.'
The same like if I add freespire.doc.

I want to open a doc file, save it in PDF, open the pdf, add an image at precise point in the document, and resave the PDF.

Thanks

[Lisa.Li]

Hello,

Thanks for your inquiry.
Please kindly note that Free Spire.DocViewer, Free Spire.Doc and Free Spire.PDF are independent products. They can't be used together in a same project, their incompatibility caused your error. As for your situation, you could use our Free Spire.Office for .NET Version:4.3.1 package and reference the corresponding dlls (Spire.Doc.dll, Spire.Pdf.dll , Spire.License.dll, Spire.DocViewer.Forms.dll) into your project. Besides, please refer to the following tutorials to achieve your demand.
Save Doc to PDF: How to Convert Word to PDF
Add an image in PDF:Draw PDF Image
If there is any question, just feel free to write back.

Sincerely,
Lisa
E-iceblue support team

[maxsch]

Thanks for your prompt and useful response.
This solved my problems.

Thanks

[Lisa.Li]

Hello,

Glad to hear that!
If you encounter any issue related to our products in the future, just feel free to contact us. Wish you all the best!

Sincerely,
Lisa
E-iceblue support team