Groupdocs.Assembly - .NET 6


I looked at this topic but still no luck ASP.NET Core 6.0.7 Support - #13 by bkbejawada

I’m evaluating Groupdocs.Assembly and am trying to run a simple concole app in .NET 6

I added all the internal packages but still get a runtime error:

Message=The type initializer for ' ​ ’ threw an exception.
at  ​ . (String )
at  ​ . ( ,  ​ , String , Boolean , Object[] )
at  ​ . ( ​ , String ,  ​ , String ,  ​ , Boolean )
at GroupDocs.Assembly.DocumentAssembler.( ​ , String ,  ​ , String , LoadSaveOptions , DataSourceInfo[] )
at GroupDocs.Assembly.DocumentAssembler.AssembleDocument(String sourcePath, String targetPath, LoadSaveOptions loadSaveOptions, DataSourceInfo[] dataSourceInfos)
at GroupDocs.Assembly.DocumentAssembler.AssembleDocument(String sourcePath, String targetPath, DataSourceInfo[] dataSourceInfos)
at Program.$(String[] args) in C:\Users\mark\source\repos\GroupDocs\Program.cs:line 17

This exception was originally thrown at this call stack:
[External Code]

Inner Exception 1:
TypeInitializationException: The type initializer for ' ​ ’ threw an exception.

Inner Exception 2:
InvalidOperationException: Operation is not valid due to the current state of the object.

The code:

using GroupDocs.Assembly;

Console.WriteLine(“Hello World!”);

//Setting up source document template
const String strDocumentTemplate = “c:\temp\Mark.docx”;
//Setting up destination Markdown reports
const String strDocumentReport = “c:\temp\test.docx”;
//Setting up description variable
const string description = "GroupDocs.Assembly for .NET is a class library that enables you to generate documents in popular " +
"office and email file formats based upon template documents and data obtained from various sources " +
“including databases, XML, JSON, OData, objects of custom .NET types, external documents, and more.”;

DocumentAssembler assembler = new DocumentAssembler();
//Assemble Document
new DataSourceInfo(“GroupDocs.Assembly for .NET”, “FIRSTNAME”),
new DataSourceInfo(description, “TITLE”));

When running the exact same code in a .NET Core 3.1 console app, it works just fine.


Please take a look at this console (10.1 KB), you have to specify source and output files.
Or try to add following dependencies in your .csproj file:


Let us know if it works at your end.

This is my project file

<Project Sdk="Microsoft.NET.Sdk">


    <PackageReference Include="Aspose.BarCode" Version="22.10.0" />
    <PackageReference Include="Aspose.Cells" Version="22.11.0" />
    <PackageReference Include="Aspose.Email" Version="22.10.0" />
    <PackageReference Include="Aspose.Slides.NET" Version="22.10.0" />
    <PackageReference Include="Aspose.Words" Version="22.11.0" />
    <PackageReference Include="GroupDocs.Assembly" Version="22.2.0" />



Could you please share the complete application using that issue could be reproduced at our end?

When changing your application to use docx files I get the same error as before.

See attached console (182.9 KB)

When running the exact same code in a core 3.1 console app, it works.

See attached project (126.5 KB)


Thanks for sharing the details. We are investigating this issue. Your investigation ticket ID is *ASSEMBLYNET-2278. We’ll notify you in case of any update.

Any progress? I cant see the correct status of the issue below, it shows ASSEMBLYNET-227 Closed. image.png (7.9 KB)

1 Like


This issue is fixed. The new release will be available to download in about two weeks. As there’s any further update, we’ll notify you.

@Atir_Tahir That’s great. Thanks!

1 Like


You’re welcome.

The issues you have found earlier (filed as ASSEMBLYNET-227) have been fixed in this update. This message was posted using Bugs notification tool by ivan.lyagin