.NET Core 3.1 Support for ASP.NET Core, WinForms, and WPF Controls (v19.2.5)

DevExpress components that are compatible with .NET Core 3.1 (LTS) and .NET 5 are ready for download from both the Download Manager and NuGet. See our .NET Core Support webpage for additional information on supported products and download sources.

General Information

• v19.2.5 of the DevExpress assemblies has been built under .NET Core 3.0 for the best user coverage. Another reason for doing so is because the .NET Core runtime updates are compatible within a major version, for instance, with .NET 5 or .NET Core 3.1. To stress this point, our online help system shows ".NET Core 3.0+" in the version checker:
  
  Note that the latest Visual Studio version replaces the .NET Core 3.0 runtime with .NET Core 3.1. Microsoft ends .NET Core 3.0 support on March 3, 2020.
• You can now download PDB files for our .NET Core 3.0+ and .NET Standard 2.0+ libraries from the Download Manager. For more information, see How can I debug DevExpress .NET source code using PDB files.
• In the future, we are aiming to provide a built-in way to specify either .NET Core, .NET Standard, or .NET Framework when you create or filter tickets in the Support Center. We're considering the addition of an optional "Framework" field to these ticket forms. In the meantime, feel free to provide the information about the assemblies you use in the ticket subject or body. Thanks!

WPF Controls

• We have reorganized our WPF packages in online and local NuGet feeds so that you can reference only the required controls instead of adding a package that contains the entire WPF suite (see changes to .NET Core NuGet package structure).
• Visual Studio's New Project dialog now features WPF project templates for .NET Core.

Where to get:
DevExpress .NET Core Desktop Libraries Installer v19.2.5
DevExpress NuGet feed

Useful links:
.NET Core Support | WPF Documentation
Creating a New .NET Core 3.0 Application
Migrate WPF Applications to .NET Core 3
WPF Controls - Prerequisites 

WinForms Controls

The entire WinForms product line supports .NET Core 3.1. As we noted earlier, we had to update our code to react to breaking changes in the official Microsoft release. Our components remain in the CTP (Community Technical Preview) stage, because the new WinForms designer for .NET Core apps itself is still in preview. It is only possible to work with UI controls in code or use a workaround with linked files. You are welcome to experiment with our WinForms components in our demos or in your own projects.

Where to get:
DevExpress .NET Core Desktop Libraries Installer v19.2.5 
DevExpress NuGet feed

Useful links:
.NET Core Support | WinForms Documentation
How to: Port a Windows Forms desktop app to .NET Core
WinForms - Single-File Applications With .NET Core 3
WinForms Controls - Prerequisites

ASP.NET Core MVC Controls

Where to get:
DevExpress .NET Products Installer v19.2.5
npm and NuGet packages

Useful links:
Get started with a Visual Studio project
Get started with a non-Visual Studio project

Blazor Controls

For a limited time, you can download and use our Blazor UI component suite free-of-charge.

Where to get:
Use DevExpress NuGet feed in your .NET projects to install Blazor component
Setup Visual Studio's NuGet Package Manager

Useful links:
Introduction to Blazor
Create a New Blazor Application

Dashboard, Reporting & Office File API 

• ASP.NET Core, WinForms, and WPF Dashboards and Reporting tools support .NET Core 3.1 (the Visual Studio designer is missing due to changes in the design-time architecture for .NET Core).
• ASP.NET Core Reporting Project Templates now give the ability to set the Target Framework to ASP.NET Core 3:

• .NET Core command line template for WPF Dashboard Viewer is now available in our online NuGet feed. 
• We have added a DevExpress Dashboard CLI template for ASP.NET Сore 3. You can specify the ASP.NET Core framework version which you target.
• The Office File API library fully supports .NET Core 3.1 and is ready to be used in production.

Where to get:
ASP.NET Core and cross-platform projects: DevExpress .NET Products Installer v19.2.5+
WinForms and WPF: DevExpress .NET Core Desktop Libraries Installer v19.2.5
All platforms: DevExpress NuGet feed 

Useful links:
Reporting in .NET Core 3 (CTP) | Documentation

App Framework (XAF)

Due to significant changes in the design-time architecture of .NET Core, XAF's WinForms UI for .NET Core 3.1 remains a CTP (Community Tech Preview). Our Model Editor, Module, Application, Controller and Action designers are not yet available within Visual Studio. 

• XAFers can use Middle Tier Security client-related classes (WcfSecuredClient, MiddleTierServerObjectSpaceProvider and MiddleTierClientSecurity) in .NET Standard 2.0/.NET Core projects. The server app still requires .NET Framework 4.5 due to .NET Core platform limitations.
• New List View Data Access Modes (ServerView and InstantFeedbackView) are available in WinForms .NET Core 3+ and .NET Framework apps using XPO for data access - all to achieve lower memory consumption and improved load, sort, group and filter performance. For more information, see this XPO blog post.

Where to get:
DevExpress .NET Core Desktop Libraries Installer v19.2.5
DevExpress NuGet feed

Useful links:
.NET Core 3.0 and .NET Standard 2.0 Support
Port an Existing XAF Application to .NET Core 3.0

ORM Library (XPO)

• XPO Profiler now supports WinForms & WPF .NET Core 3+ apps. It can also profile ASP.NET Core apps regardless of whether System.Text.Json or Newtonsoft.Json are used for serialization.
• XPO now supports Microsoft.Data.SqlClient v1.1.0 for .NET Standard that can be used in .NET Core apps. This feature is available in .NET Framework 4.5 apps as well.
• We published an ASP.NET Core version of the XPO + OData V4 example on GitHub. The example currently uses .NET Core 2.2, but we will add a newer version once Microsoft supports .NET Core 3 for Microsoft.AspNetCore.OData. For more information, track this GitHub issue.

Where to get:
DevExpress .NET Core Desktop Libraries Installer v19.2.5
DevExpress.Xpo on NuGet
DevExpress NuGet feed

Useful links:
.NET Core 3.0 and .NET Standard 2.0 Support
Getting Started with .NET Core

Your Feedback Matters

We would also value your thoughts about rebuilding the DevExpress source code for this new platform. How is this scenario important for you and why? 

Currently, we do not provide tools to rebuild the DevExpress source code for .NET Core 3.0+ and .NET Standard 2.0+ assemblies automatically. First, because of minimal interest from our customers (popular debugging scenarios are solved with PDB files or third-party decompilers). Second, recompiled assemblies alone do not make much sense in .NET Core apps without NuGet packages and it is difficult to create them automatically.

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