[带winform的devexpress的netcore31错误

Question

public partial class FrmMain : RibbonForm
    {
        public FrmMain()
        {
            InitializeComponent();
        }
    }

dev20.1 
for net472  ok
for netcore3.1 error

quote

enter image description here斜体

**
The type initializer for 'DevExpress.Utils.Helpers.IconGuard' threw an exception.

InnerException {"Value cannot be null. (Parameter 'field')"} System.Exception {System.ArgumentNullException}

   at DevExpress.Utils.Helpers.IconGuard.IsDisposedOrInvalid(Icon icon)
   at DevExpress.XtraEditors.FormIconOptions.FormIconHelper.GetIconHandleSafely(Icon icon)
   at DevExpress.XtraEditors.FormIconOptions.CheckUpdateIcon()
   at DevExpress.XtraEditors.FormIconOptions.get_Icon()
   at DevExpress.XtraEditors.FormIconOptions.get_UseIconImage()
   at DevExpress.XtraEditors.FormIconOptions.UpdateIcon(Boolean redrawFrame)
   at DevExpress.XtraEditors.FormIconOptions.InitializeIcon(Boolean redrawFrame)
   at DevExpress.XtraEditors.FormIconOptions..ctor(XtraForm form, Boolean initIconImmediately)
   at DevExpress.XtraEditors.FormIconOptions..ctor(XtraForm form)
   at DevExpress.XtraEditors.XtraForm.CreateIconOptions()
   at DevExpress.XtraEditors.XtraForm..ctor()
   at DevExpress.XtraBars.Ribbon.RibbonForm..ctor()
   at SimpleWinForms_netcore.FrmMain..ctor() in D:\Tencent\FileRecv\SimpleWinForms_netcore-master\SimpleWinForms_netcore\FrmMain.cs:line 16
   at SimpleWinForms_netcore.Program.Main() in D:\\Tencent\FileRecv\SimpleWinForms_netcore-master\SimpleWinForms_netcore\Program.cs:line 28
**

https://github.com/h0730303779/SimpleWinForms_netcore-master/tree/master/SimpleWinForms_netcore

我正在使用DevExpress控件的winforms应用程序上工作。

我使用Verison dexpress 20.1.3。

net471正常。

但是netcore31无法运行？ ？我如何正常使用它？？

Answer 1

查看sources：

 <Reference Include="DevExpress.Data.v20.1">
   <HintPath>D:\开发软件\DevExpress 20.1\Components\Bin\Framework\DevExpress.Data.v20.1.dll</HintPath>
 </Reference>

似乎您对.Net Core和Full Framework使用了相同的程序集。这是不正确。对于.Net Core，应该使用专门为.Net Core构建的程序集。

您可以在.NET Core Support文档文章中了解更多信息。