DotNet ‘XmlDocumentFragment’ is missing

If you still use dotnet for legacy reasons for example in Business Central. You could encounter this issue in VS Code when building your app:

DotNet ‘XmlDocumentFragment’ is missing

This class is part of the System.Xml namespace and represents a lightweight object for tree insert operation. See all the info on Microsoft Docs: https://docs.microsoft.com/en-us/dotnet/api/system.xml.xmldocument.createdocumentfragment?view=netframework-4.8

In order to fix this in AL you need to do the following steps:

• Setup and configure Assembly Probing Paths in VS Code Workspace Settings
• Create a dotnet.al file in your AL Project. This file should now hold the following Json structure and contents:

dotnet
{
    assembly("System.Xml")
    {
        Version = '4.0.0.0';
        Culture = 'neutral';
        PublicKeyToken = 'b77a5c561934e089';

        type("System.Xml.XmlDocumentFragment"; "XmlDocumentFragment")
        {
        }
    }
}