If you create core libraries with the DevExpress.Data.v19.2.dll or DevExpress.Xpo.v19.2.dll assemblies, you may need to create two csproj files: one for .NET Core 3.0+ desktop apps and the other for .NET Standard 2.0 cross-platform apps. For more information, refer to the following Support Center tickets:
Service classes listed in the Transferring Data using WCF Services topic are not supported in .NET Core 3.0+ and .NET Standard 2.0. You can connect client classes for these platforms to the service classes hosted in .NET Framework applications.
XPO Tools And Component Designers Limitations
The following features are unavailable in the DevExpress .NET Core Desktop installer:
Design-time support for XPCollection and other data source components.
These design-time features rely on Visual Studio capabilities and may be available with future .NET Core 3.0 and Visual Studio updates.
If you want these features, use the DevExpress installer for the .NET Framework.
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