Hello, I have a .Net Core 2.0 WebApi project with

- TargetFramework of netcoreapp2.0
- I have added EO.Pdf and EO.WebBrowser (v17.3.13) as references using NuGet (which have also added the other two dependencies EO.Base and EO.WebEngine)
- calls HtmlToPdf.ConvertHtml as per below



The above falls over with "{System.IO.FileNotFoundException: Could not load file or assembly 'System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'. The system cannot find the file specified.
File name: 'System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'..."

I have seen your post regarding integration with .Net Core 1.0 (https://www.essentialobjects.com/doc/common/dotnetcore.aspx) however the configuration for .Net Core 2.0 is very different (the contents of project.json is 'translated' into the project file). I've tried to translate what you have within the 1.0 article (with numerous variations) and have been unsuccessful

I've also tried separating the call to HtmlToPdf.ConvertHtml into a another project targeting net461 and/or netstandard2.0 but to no avail (I get the message "{System.IO.FileNotFoundException: Could not load file or assembly 'EO.Pdf, Version=17.3.13.0, Culture=neutral, PublicKeyToken=e92353a6bf73fffc'. The system cannot find the file specified.
File name: 'EO.Pdf, Version=17.3.13.0, Culture=neutral, PublicKeyToken=e92353a6bf73fffc'..." or a message suggesting version conflict)

Are you able to explain how this is done (i.e. calling HtmlToPdf.ConvertHtml from within a .Net Core 2.0 project)

Hi,

We have looked into this. As with .NET Core 1.1, you will NOT be able to run EO.Pdf on .NET Core. The document provided for .NET Core 1.1 is only allow you to build your application on .NET Core (for example, for project maintenance purpose). For .NET Core 2.0 it will be the same. You will be able to build it with .NET Core 2.0 but you won't be able to run it.

You can follow these steps to modify your .NET Core 2.0 project to target .NET Framework:

1. Open your .NET Core 2.0 project in Visual Studio (requires 2017.15.3 and newer);
2. Open solution Explorer, right click your project, then select "Edit your_project_file", here your_project_file is the project file name, for example, Test.csproj. This will open the project file in XML Editor;
3. Modify the following tag:



To:



Note that:

a. TargetFramework becomes TargetFrameworks;
b. net461 has been added into the list. You can use other frameworks too, for example, net45;

Save the changes and Visual Studio should reload the project;

4. You can now add our DLL references the same way as you do with a .NET Framework project:

https://www.essentialobjects.com/doc/common/refdll.aspx

Now you will be able to build the project both as .NET Core and .NET Framework. However you will still only be able to run it on .NET Framework.

Hope this helps. Please feel free to let us know if you still have any questions.

Thanks!